JP2019059260A - Air conditioner for vehicle - Google Patents

Abstract

To further improve cooling and heating efficiency, and comfort to occupants without requiring complex operations.SOLUTION: A blower 50 is configured as a body separate from an air conditioner body 1, and is disposed on a ceiling part 106 of a vehicle interior space 101 and between a front seat and a rear seat. When there are no occupants on the rear seat, an air curtain is created by the blower 50. When occupants on the front seat and occupants on the rear seat are detected, the blowing mode of the blower 50 is brought into the swing mode.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle air conditioner mounted on, for example, an automobile or the like, and more particularly to the technical field of a structure provided with a blower separate from the air conditioner main body.

  Conventionally, a vehicle air conditioner introduces air outside the vehicle and air in the vehicle room into the casing and adjusts the temperature by a heat exchanger for heat exchange and heating, for example, in the vicinity of the windshield glass of the vehicle room, It is configured to be able to be supplied to a desired place such as the upper body, feet and the like of the occupant.

  As this type of vehicle air conditioner, for example, as disclosed in Patent Documents 1 to 4 respectively, a heating heat exchanger is disposed on the downstream side of the cooling heat exchanger in the air flow direction inside the casing, There is known a structure in which a cold air passage is provided above and below the heating heat exchanger for flowing cold air having passed through the cooling heat exchanger. The upper cold air passage is formed to extend above the heating heat exchanger, and the lower cold air passage is formed extending below the heating heat exchanger, and the downstream end of the upper cold air passage is formed. The downstream end of the lower cold air passage is in communication with each other. In this embodiment, an upper air mix damper for changing the opening degree of the upper cold air passage and a lower air mix damper for changing the opening degree of the lower cold air passage are provided. By changing the mixing ratio of the cold air and the warm air in the air mix space, the conditioned air of desired temperature is generated.

  In the air conditioners of Patent Documents 1 to 4, the inside air circulation mode in which only inside air is introduced as air for air conditioning by opening the inside air introduction port and closing the outside air introduction port by the operation of the inside / outside air switching damper; To introduce only outside air as air conditioning air by closing the outside air introduction port, and an inside / outside air double layer which simultaneously introduces inside air and outside air as air conditioning air by opening the inside air introduction port and the outside air introduction port It is possible to switch to any of the flow modes.

  Further, Patent Document 5 discloses an air conditioner for a vehicle including an air conditioner main body configured to be switchable between an inside air circulation mode and an outside air introduction mode, and an air curtain unit separately configured from the air conditioner main body. Is disclosed. The air conditioner main body is housed inside an instrument panel provided at the front end of a cabin, while the air curtain unit is disposed at the ceiling of the vehicle. In this air conditioner, the air curtain unit can be turned ON by operating the switch on the control panel to set the energy saving mode. The air curtain unit forms an air curtain by blowing air toward the lower side of the compartment during operation.

JP, 2015-646, A JP, 2014-65334, A JP, 2012-171489, A JP 2011-57080 A Japanese Patent Application Laid-Open No. 2003-326951

  By the way, in patent document 5, since the air curtain unit does not operate | move unless a passenger operates the switch on a control panel and it sets to an energy-saving mode, operation is complicated. Also, for example, the air curtain unit may be operated when the passenger is in only the front seat, and then the passenger may get in the rear seat, in which case it is necessary to stop the air curtain unit. In Patent Document 5, the passenger has to operate a switch on the control panel, and in this case as well, the operation is complicated.

  For example, as in the air conditioners of Patent Documents 1 to 4, the vehicle air conditioner can be switched not only to the inside air circulation mode and the outside air introduction mode but also to the inside and outside air double-layer flow mode simultaneously introducing inside and outside air as air conditioning air. There is also a demand to further improve the heating and cooling efficiency and the comfort of the occupant even in a vehicle air conditioner having an apparatus and having such an inside / outside air double layer flow mode.

  This invention is made in view of this point, The place made into the objective is to further improve heating / cooling efficiency and a passenger | crew's comfort, making complicated operation unnecessary.

  In order to achieve the above object, in the present invention, the passenger's riding state is automatically detected, and the air blowing from the ceiling is controlled according to the riding state.

  According to a first aspect of the present invention, an air conditioner main body configured to be capable of introducing air in a vehicle compartment and air outside the vehicle compartment as air conditioning air, and temperature-controlling air conditioning air to supply each part of the vehicle compartment; And a control device for controlling the blower, wherein the air conditioner is disposed separately from the front seat and is disposed between the front seat and the rear seat in the ceiling portion of the vehicle compartment. An occupant detection means for detecting an occupant is provided, and the blower is configured to be able to select an air curtain mode for blowing air in a direction separating the front seat and the rear seat, and the control device is configured to When the air blower mode can not be detected, the air blower mode of the fan is set to the air curtain mode.

  According to this configuration, the air conditioning air is temperature-controlled and supplied to each part of the compartment by the air conditioner main body, and the air is blown from the vicinity of the ceiling of the compartment separately from the air conditioner main body by the blower. Multiple airflows can be created in the passenger compartment, improving occupant comfort.

  When the occupant detection means can not detect the occupant in the rear seat, it can be estimated that the occupant is not in the rear seat. In this case, since the air blowing mode of the air blower is set to the air curtain mode, a curtain of air, that is, an air curtain is formed between the front and rear seats by the air blower, while making the operation of the occupant unnecessary. become. As a result, the heating and cooling efficiency of the front seat is improved in any of the inside air circulation mode, the outside air introduction mode, and the inside and outside air two-layer flow mode.

  According to a second aspect of the present invention, an air conditioner main body configured to be capable of introducing air in a vehicle compartment and air outside the vehicle compartment as air conditioning air, and temperature-controlling air conditioning air to supply parts of the vehicle compartment; And a control device for controlling the blower, the blower being disposed separately from the front seat and being disposed between the front seat and the rear seat in the ceiling portion of the vehicle compartment. An occupant detection means for detecting an occupant and an occupant in the rear seat is provided, and the blower is configured to be able to select a swing mode in which the blower sequentially blows air from one side to the other side in the longitudinal direction of the cabin. When the passenger in the front seat and the passenger in the rear seat are detected by the means, the air blowing mode of the air blower is set to the swing mode.

  According to this configuration, the air conditioning air is temperature-controlled and supplied to each part of the compartment by the air conditioner main body, and the air is blown from the vicinity of the ceiling of the compartment separately from the air conditioner main body by the blower. Multiple airflows can be created in the passenger compartment, improving occupant comfort.

  When the occupant detection means detects the occupants in the front and rear seats, it can be estimated that the occupants are in both the front and rear seats. In this case, since the blowing mode of the blower is set to the swing mode, air is sent from above to the front seat and the rear seat by the blower and the air in the vehicle compartment is agitated while the operation of the occupant is unnecessary. It will be. As a result, the blower functions as a circulator in any of the inside air circulation mode, the outside air introduction mode, and the inside / outside air two-layer flow mode, so the cooling and heating efficiency is improved in the entire vehicle interior.

  In a third aspect based on the first aspect, the occupant detection means is configured to be capable of detecting an occupant in the front seat and an occupant in the rear seat, and the blower is arranged in order from one side to the other side in the front and rear direction of the vehicle compartment. The swing mode to be blown can be selected, and the control unit is configured to set the blowing mode of the blower to the swing mode when the occupant detection means detects the occupant in the front seat and the occupant in the rear seat. It is characterized by being.

  According to a fourth aspect of the present invention, in the first or third aspect, the air conditioner main body introduces an outside air introduction mode in which only outside air is introduced as air conditioning air, and an inside / outside air double layer flow simultaneously introducing inside air and outside air as air conditioning air Of the modes, it is possible to switch to any mode, and the control device supplies the conditioned air in the vicinity of the foot of the passenger while the air conditioner main body is set to the inside / outside air two-layer flow mode If the passenger detection means can not detect the occupant in the rear seat by the occupant detection means, it is possible to detect the occupant in the rear seat if the occupant detection means can not detect the occupant in the rear seat. The air blowing mode is set to the air curtain mode.

  That is, when it is set as the heat mode or the differential heat, and it is not possible to detect the passenger in the rear seat, it is estimated that heating in the front seat is required. it can. In the present invention, since the air curtain is formed between the front seat and the rear seat in this case, the heating efficiency of the front seat is improved.

  In a fifth invention according to any one of the first to the third inventions, the air conditioner main body introduces an outside air introduction mode for introducing only outside air as air conditioning air, and an inside and outside for simultaneously introducing inside air and outside air as air conditioning air. Of the two-layer air flow mode, it is possible to switch to an arbitrary mode, and the blower is configured to be able to select a rear air blowing mode for blowing air toward the rear side of the vehicle compartment, and the control device The air conditioner main body is in the above internal / external air double layer flow mode, and a heat mode for supplying conditioned air near the foot of the occupant, or a differential for supplying conditioned air near the foot of the occupant and the inner surface of the windshield. When the heat detection mode is set to the heat mode, and the occupant detection means detects the occupant in the front seat and the occupant in the rear seat, the blower mode of the blower is set to the rear blower mode. Characterized in that it is configured to constant.

  That is, it can be estimated that heating is performed in the passenger compartment that the internal / external air two-layer flow mode is set and the heat mode or the differential heat mode is set. In this case, when the front seat occupant and the rear seat occupant are detected, it is considered that the number of occupants is large and the glass is likely to be fogged. In the present invention, since the air flow from the ceiling to the rear side of the cabin can be made by the blower in such a situation, the ventilation from the rear side of the vehicle can be efficiently performed, and the fogging of the glass can be achieved. It can be suppressed.

  In a sixth invention according to any one of the first to third inventions, the blower is configured to be able to select a rear air blowing mode for blowing air toward the rear side of the passenger compartment, and the air conditioner main body is an outside air Is configured to be changeable to the outside air introduction mode in which only the air conditioning air is introduced, and the control device is configured to use the blower when the air conditioner main body is in the defroster mode for supplying the air conditioning air to the inner surface of the windshield. The present invention is characterized in that it is configured to set the air blowing mode to the rear air blowing mode.

  A seventh invention is characterized in that, in any one of the first to sixth inventions, the fan of the blower is a cross flow fan having a rotating shaft extending in the vehicle width direction.

  According to the present invention, the passenger's riding state is automatically detected, and the air blowing from the ceiling is controlled according to the riding state. Therefore, the air conditioning and heating efficiency and the passenger's comfort can be further enhanced while eliminating the need for complicated operations. It can be further improved.

1 is a cross-sectional view of a vehicle equipped with a vehicle air conditioner according to an embodiment of the present invention. It is the II-II sectional view taken on the line in FIG. FIG. 2 is a perspective view of the air conditioner main body as viewed from the rear side of the vehicle. It is a rear view of an air conditioner main body. It is a sectional view of an air-conditioner main part in the state where an air mix damper made a cold wind passage a minute opening degree. It is a sectional view of an air-conditioner main part in the state where an air mix damper made an opening of a cold wind passage about 50%. It is a block diagram of a vehicle air conditioner. It is the FIG. 1 equivalent view which shows the state in which the ventilation mode of the air blower is set to air curtain mode. It is the FIG. 1 equivalent view which shows the state in which the ventilation mode of the air blower is set to back ventilation mode. It is the FIG. 1 equivalent view in case the blowing mode of the air blower is set to swing mode, and it ventilates toward the front side. It is the FIG. 1 equivalent view when the ventilation mode of the air blower is set to swing mode, and it is ventilated toward the back side.

  Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following description of the preferred embodiments is merely illustrative in nature, and is not intended to limit the present invention, its applications, or its applications.

  FIG. 1 is a cross-sectional view of a vehicle 100 equipped with a vehicle air conditioner A according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG. In the description of this embodiment, for the convenience of description, 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. It shall be "right".

(Configuration of vehicle 100)
The vehicle 100 has a passenger compartment 101 in which an occupant gets in, an engine compartment 102 provided on the front side of the passenger compartment 101, and a luggage compartment 103 provided on the rear side of the passenger compartment 101. A front seat 104 as a front seat is provided on the front side of the cabin 101, and a rear seat 105 as a rear seat is provided on the rear side of the cabin 101. The ceiling portion 106 of the vehicle 100 extends in the front-rear direction and the left-right direction. At the rear of the rear seat 105 of the passenger compartment 101, a partition wall 107 for partitioning the passenger compartment 101 and the cargo compartment 103 is provided. The partition wall 107 is formed with a communication port 107 a for communicating the casing 101 with the loading chamber 103. Further, an exhaust hole 108 communicating with the outside of the vehicle is provided in the luggage compartment 103. That is, the air in the casing 101 can be discharged to the outside of the vehicle through the exhaust port 108 through the loading chamber 103 from the communication port 107 a of the section wall 107. The location where the communication port 107a and the exhaust hole 108 are formed is not particularly limited as long as it is on the rear side of the vehicle.

  Further, an instrument panel 110 in which instruments are disposed is provided at a front end portion of the casing 101. At the front end of the upper portion of the instrument panel 110, a defroster port 111 for supplying conditioned air to the inner surface of the windshield G is formed. At an intermediate portion in the vertical direction of the instrument panel 110, a vent port 112 for mainly supplying the conditioned air to the upper body of the occupant is formed. The vent port 112 is formed in the left-right direction center part, the left end part, and the right end part of the instrument panel 110, respectively.

  The above vehicle 100 is a sedan type passenger car having front and rear seats, but the present invention is not limited to sedan type passenger cars, but, for example, hatchback type passenger cars, wagon type passenger cars, one box type passenger cars, etc. Can also be applied. The present invention can also be applied to a passenger car in which three rows of seats are arranged in the front-rear direction. In this case, the front seat is the front seat of the present invention, and the center seat and the last seat are the rear seats of the present invention. Do. Exhaust holes are provided on the rear side of the vehicle body in any of the above-described types of vehicles.

  As shown in FIG. 2, the front side sheet 104 is independent left and right. Although not shown, the front seat may be a bench seat that is continuous in the left-right direction.

(Configuration of vehicle air conditioner A)
The air conditioner A for a vehicle is configured to be capable of introducing the air in the passenger compartment 101 and the air outside the passenger compartment as air conditioning air, and the air conditioner main body that adjusts the temperature of the introduced air conditioning air and supplies it to each part of the passenger compartment 101 1 and a fan 50 separately formed from the air conditioner main body 1 and disposed between the front seat 104 and the rear seat 105 in the ceiling portion 106 of the passenger compartment 101, and a control device 70 (FIG. Shown in).

  The air conditioner main body 1 is accommodated inside the instrument panel 110 of the passenger compartment 101, and is fixed to the instrument panel 110 or the vehicle body. The blower 50 is a unit for blowing air from the ceiling portion 106. The control device 70 is a unit for controlling the air conditioner main body 1 and the blower 50, and can be disposed, for example, on the instrument panel 110 or the like.

(Configuration of air conditioner main body 1)
Although not shown, the air conditioner main body 1 includes a blower unit. The blower unit can be disposed on the right side (passenger seat side) of the vehicle. The blower unit is configured to be able to introduce one or both of the air inside the vehicle (inside air) and the air outside the vehicle (outside air), and an inside / outside air switching damper (not shown), an inside / outside air switching It comprises an actuator 72 (shown in FIG. 7), a blower (not shown), a blower motor 71 (shown in FIG. 7), a blower casing (not shown) and the like. In the air-blowing casing, an inside air introduction port opening into the casing 101 and an outside air introduction port communicating with the outside of the vehicle compartment are formed. Inside the air blowing casing, an inside / outside air switching damper and a blower are accommodated. By operating the inside and outside air switching damper with the inside and outside air switching actuator 72, the inside and outside air mode can be switched. Specifically, the inside air circulation mode in which only inside air is introduced as air for air conditioning by opening the inside air inlet and closing the outside air inlet, and for outside air only for air conditioning by closing the inside air inlet and opening the outside air inlet It is possible to switch to any mode among the outside air introduction mode introduced as air and the inside / outside air two-layer flow mode simultaneously introducing inside air and outside air as air for air conditioning by opening the inside air introduction port and the outside air introduction port It has become. The air flow rate of the air conditioning air can be adjusted by changing the rotational speed of the blower motor 71. The blower unit that can be switched to the inside / outside air two-layer flow mode can also be configured as disclosed in Patent Documents 1 to 4 above. In the inside / outside air double-layered flow mode, the introduction ratio of inside air to outside air can be changed by changing the opening degree of the inside air introduction port and the outside air introduction port. In addition, it can also be set as the ventilation unit which abbreviate | omitted the inside-and-outside air double layer flow mode.

  As shown in FIG. 7, the blower motor 71 and the inside / outside air switching actuator 72 are connected to the control device 70, and are controlled by the control device 70. The control device 70 can use a control device capable of performing general vehicle auto air conditioner control, and can include, for example, a microcomputer provided with a central processing unit, a storage device, and the like. The control device 70 changes the number of rotations of the blower motor 71 according to the temperature outside the vehicle, the temperature in the vehicle compartment, the amount of solar radiation, the temperature of cooling the engine mounted on the vehicle, the temperature set by the occupant, etc. The actuator 72 is operated. For example, the inside / outside air switching actuator 72 can be operated to be in the inside air circulation mode at the time of cooling in summer, and the inside / outside air switching actuator 72 can be operated to be in the inside / outside two-layer flow mode at the time of heating in winter. it can. In addition, by obtaining humidity resistance of the windshield G by a humidity sensor or the like and operating the inside / outside air switching actuator 72, the windshield glass G is switched to the outside air introduction mode so that the windshield G is not fogged, or the windshield G is fogged. It is possible to change the outside air introduction ratio in the inside and outside air two-layer flow mode so as not to occur.

(Configuration of air conditioner main body 1)
The air conditioner main body 1 includes an air conditioning casing 10 shaped as shown in FIGS. 3 to 5. Air conditioning air blown from the blower unit is introduced into the air conditioning casing 10. Furthermore, as shown in FIG. 5 and FIG. 6, the air conditioner main body 1 has a cooling heat exchanger 2 as an air conditioning air cooler, a heating heat exchanger 3 as an air conditioning air heater, and an upper side air. A mix damper 4, a lower air mix damper 5, a defroster damper 6, a vent damper 7, a heat damper 8, and a rear seat damper 9 are provided. After the air conditioning air introduced into the air conditioning casing 10 passes through the cooling heat exchanger 2 and becomes cold air, the heat exchanger 3 for heating is opened and closed by the open / close operation of the upper air mix damper 4 and the lower air mix damper 5 The amount of passing through is changed, thereby changing the mixing ratio of the cold air and the warm air. Thus, the temperature of the generated conditioned air can be adjusted by changing the mixing ratio of the cold air and the warm air. The generated conditioned air is supplied to each part of the vehicle compartment by the opening and closing operations of the defroster damper 6, the vent damper 7, the heat damper 8, and the rear seat damper 9.

  Although not shown, the vehicle air conditioner A also includes a compressor for compressing the refrigerant, a condenser for condensing the refrigerant, and an expansion valve for expanding the refrigerant. These compressor, condenser and expansion valve, and cooling A refrigeration cycle apparatus is configured by the refrigerant evaporator used as the heat exchanger 2. The compressor, the condenser, the expansion valve and the refrigerant evaporator are connected by a refrigerant pipe (not shown).

  As shown in FIG. 5, inside the air conditioning casing 10, the cooling heat exchanger 2, the heating heat exchanger 3, the upper air mix damper 4, the lower air mix damper 5, the defroster damper 6, the vent damper 7, the heat damper 8 and a rear seat damper 9 are accommodated. The heat exchanger 2 for cooling is accommodated in the air-conditioning casing 10 in the front side rather than the center part in the front-rear direction. An air inlet 10 a is formed on the front side of the right side wall of the air conditioning casing 10 with respect to the cooling heat exchanger 2. The air discharge part of the said ventilation unit is connected to this air introduction port 10a. Therefore, air for air conditioning is introduced into the inside of the air conditioning casing 10 from the front side of the cooling heat exchanger 2. Further, the air conditioning air introduced into the inside of the air conditioning casing 10 forms a flow toward the rear side while flowing from the right side to the left side.

  In the case of a blower unit having an internal / external air two-layer flow mode, when the internal / external air two-layer flow mode is selected, internal air is introduced below the air inlet 10a and external air is introduced above the air inlet 10a. .

  As described above, the cooling heat exchanger 2 can be configured by a refrigerant evaporator, and in this embodiment, a number of heat transfer tubes and fins (not shown) extending in the vertical direction are alternately stacked in the horizontal direction. A laminated refrigerant evaporator is used. An upper header tank 2 a is provided above the cooling heat exchanger 2, and a lower header tank 2 b is provided below the cooling heat exchanger 2. The air inflowing surface of the cooling heat exchanger 2 to which the air conditioning air flows in is directed forward, and the air outflowing surface to which the air after cooling of the cooling heat exchanger 2 flows out is directed to the rear. Both the air inflow surface and the air outflow surface of the cooling heat exchanger 2 extend in the vertical direction.

  The upper header tank 2 a of the cooling heat exchanger 2 is held by the upper holding portion 10 b formed on the upper wall portion of the air conditioning casing 10. The upper holding portion 10b is formed to bulge upward, and the upper header tank 2a can be held by fitting the upper header tank 2a from the lower portion to the upper holding portion 10b. Further, the lower header tank 2 b of the cooling heat exchanger 2 is held by the lower holding portion 10 c formed on the bottom wall portion of the air conditioning casing 10. The lower holding portion 10c is formed to bulge downward, and the lower header tank 2b is fitted to the lower holding portion 10c from above to hold the lower header tank 2b. ing.

  A heating heat exchanger 3 is accommodated in the vicinity of a central portion in the front-rear direction inside the air conditioning casing 10. The heating heat exchanger 3 is composed of a heater core through which cooling water of an engine (not shown) mounted on a vehicle flows, and more specifically, a large number of heat transfer tubes and fins extending in the vertical direction (see FIG. A laminated heater core is used, which is formed by alternately laminating left and right in a horizontal direction. An upper header tank 3 a is provided above the heating heat exchanger 3, and a lower header tank 3 b is provided below the heating heat exchanger 3.

  As the heater core, it is also possible to use a heat exchanger in which cooling water for cooling the electrical components mounted on the vehicle flows. Also, instead of the heater core, an electric heater (not shown) that generates heat when energized can be used as an air heater for air conditioning. As an electric heater, what used the element which heat | fever-generates by supply of electric power, such as a PTC element, can be mentioned, for example. Also, instead of the heater core, a condenser of refrigerant can be used as an air heater for air conditioning. Also, a plurality of air conditioning air heaters can be used, and in this embodiment, the electric heater A is provided on the air flow downstream side (rear side) of the heating heat exchanger 3. The heating heat exchanger 3 and the electric heater A are disposed apart in the front-rear direction. The electric heater A can be omitted. In this embodiment, the thickness (the dimension in the external air passage direction) of the cooling heat exchanger 2 is set to be thicker than the thickness of the heating heat exchanger 3. The thickness of the cooling heat exchanger 2 is set to be thicker than the thickness of the electric heater A. Furthermore, the thickness of the heating heat exchanger 3 is set to be thicker than the thickness of the electric heater A.

  The air inlet surface of the heating heat exchanger 3 to which the air conditioning air flows in is directed forward, and the air outlet surface from which the air after cooling of the heating heat exchanger 3 flows is directed to the rear. The air inflow surface and the air outflow surface of the heat exchanger 3 for heating are inclined so as to be positioned forward as approaching the upper end. As a result, the air inflow surface of the heating heat exchanger 3 and the air outflow surface of the cooling heat exchanger 2 are arranged such that the distance between them becomes narrower as it goes up. In addition, the electric heater A is also inclined so as to be positioned forward as approaching the upper end.

  The dimensions in the vertical direction of the heating heat exchanger 3 and the electric heater A are set shorter than the dimensions in the vertical direction of the cooling heat exchanger 2. The heating heat exchanger 3 and the electric heater A are disposed at an intermediate portion in the vertical direction of the air conditioning casing 10 inside the air conditioning casing 10. Accordingly, the upper portions of the heating heat exchanger 3 and the electric heater A are located below the upper portion of the cooling heat exchanger 2, and the lower portions of the heating heat exchanger 3 and the electric heater A are the cooling heat exchanger It will be located above the lower part of 2.

  Inside the air-conditioning casing 10, an upper holding plate portion 10d and a lower holding plate portion 10e are provided in the vertical direction at intervals in the vicinity of a central portion in the front-rear direction. The upper holding plate portion 10d is formed such that the upper header tank 3a of the heating heat exchanger 3 and the upper portion of the electric heater A are fitted respectively, and the heating heat exchanger 3 and the heating heat exchanger 3 are formed by the upper holding plate portion 10d. The upper portion of the electric heater A can be held inside the air conditioning casing 10. The lower holding plate portion 10e is formed such that the lower header tank 3b of the heating heat exchanger 3 and the lower portion of the electric heater A are respectively fitted, and heat exchange for heating is performed by the lower holding plate portion 10e. The lower part of the heater 3 and the electric heater A can be held inside the air conditioning casing 10.

  Further, in the air conditioning casing 10, a vertical plate portion 10f extending in the vertical direction is provided between the air outflow surface of the cooling heat exchanger 2 and the air inflow surface of the heating heat exchanger 3. . The vertical plate portion 10f is formed such that the vertical central portion is located at the frontmost position, and is inclined so that the upper position is closer to the upper end from the central portion, and is positioned later as the lower portion is closer to the central portion It is inclined to The distance between the vertical plate portion 10 f and the air outflow surface of the cooling heat exchanger 2 is set smaller than the distance between the vertical plate portion 10 f and the air inflow surface of the heating heat exchanger 3.

  An intermediate first opening 18 is formed between the upper end of the vertical plate 10 f and the front end of the upper holding plate 10 d. Further, an intermediate second opening 19 is formed between the lower end of the vertical plate 10 f and the front end of the lower holding plate 10 e.

  Moreover, inside the air-conditioning casing 10, the upper side extending plate part 10g extended diagonally back from the upper side holding | maintenance part 10b downward is formed. The lower end portion of the upper extending plate portion 10g is located below the upper header tank 2a of the cooling heat exchanger 2, and is disposed to face the air outflow surface of the cooling heat exchanger 2. . An upper opening 11 is formed between the lower end of the upper extension plate 10g and the front end of the upper holding plate 10d.

  In the lower holding portion 10c of the air conditioning casing 10, a drainage passage portion 10h for draining the condensed water condensed on the surface of the cooling heat exchanger 2 when cooling the air conditioning air bulges downward. It is formed to be. A drain pipe 12 (shown in FIG. 4) protruding downward is connected to the drainage passage portion 10h. A hose or the like (not shown) extending out of the vehicle is connected to the drain pipe 12 so that the condensed water condensed on the surface of the cooling heat exchanger 2 is drained out of the vehicle.

  On the bottom wall portion of the air conditioning casing 10, a lower side bulging portion 10i that bulges upward is formed on the rear side of the drainage passage portion 10h. A lower opening 13 is formed between the rear end of the lower bulging portion 10i and the front end of the lower holding plate 10e.

  At the front side of the upper wall portion of the air conditioning casing 10, a defroster air outlet 14 communicating with the upper side inside the air conditioning casing 10 is provided. The defroster outlet 14 is connected to the defroster port 111 of the instrument panel 110 via a defroster duct, although not shown. The defroster air outlet 14 is opened and closed by the defroster damper 6. The defroster damper 6 includes a support shaft 6a extending in the left-right direction, and a pair of closing plates 6b extending in the radial direction of the support shaft 6a from the support shaft 6a. The support shaft 6 a is rotatably supported by the left and right side wall portions of the air conditioning casing 10. As the defroster damper 6 rotates, the closing plate portion 6 b opens and closes the defroster air outlet 14. The opening degree of the defroster outlet 14 can be arbitrarily set by the rotation angle of the defroster damper 6.

  At the rear side of the defroster outlet 14 on the upper wall portion of the air conditioning casing 10, a vent outlet 15 communicating with the upper side inside the air conditioning casing 10 is provided. Although not shown, the vent blower outlet 15 is connected to the vent port 112 of the instrument panel 110 via a vent duct. The vent blower outlet 15 is opened and closed by the vent damper 7. The vent damper 7 includes a support shaft 7a extending in the left-right direction, and a closing plate 7b provided away from the support shaft 7a in the radial direction of the support shaft 7a. The support shaft 7 a is rotatably supported by the left and right side wall portions of the air conditioning casing 10. The closing plate portion 7 b opens and closes the vent outlet 15 by the rotation of the vent damper 7. The opening degree of the vent blower outlet 15 can be arbitrarily set by the turning angle of the vent damper 7.

  At the rear wall portion of the air conditioning casing 10, a heat outlet 16 communicating with the rear side inside the air conditioning casing 10 is provided. The heat outlets 16 may be opened near the feet of front occupants or may be connected to the heat duct 120 shown in FIG. 1. The heat duct 120 extends near the feet of the rear seat occupants. That is, the heat outlet 16 mainly supplies the conditioned air to the feet of the front seat occupants and the feet of the rear seat occupants. The heat outlet 16 is opened and closed by the heat damper 8. The heat damper 8 includes a support shaft 8a extending in the left-right direction, and a pair of closing plates 8b extending in the radial direction of the support shaft 8a from the support shaft 8a. The support shaft 8 a is rotatably supported by the left and right side wall portions of the air conditioning casing 10. As the heat damper 8 rotates, the closing plate portion 8 b opens and closes the heat outlet 16. The opening degree of the heat outlet 16 can be arbitrarily set by the rotation angle of the heat damper 8.

  Below the rear wall portion of the air conditioning casing 10, a rear seat air outlet 17 communicating with the rear side inside the air conditioning casing 10 is provided. A rear seat duct 121 shown in FIG. 1 is connected to the rear seat air outlet 17. The rear seat duct 121 extends to the vicinity of the rear seat of the passenger compartment 101 and is mainly for supplying conditioned air to rear seat occupants. The rear seat air outlet 17 is opened and closed by the rear seat damper 9. The rear seat damper 9 includes a support shaft 9a extending in the left-right direction, and a pair of closing plates 9b extending in the radial direction of the support shaft 9a from the support shaft 9a. The support shaft 9 a is rotatably supported by the left and right side wall portions of the air conditioning casing 10. As the rear seat damper 9 rotates, the closing plate portion 9 b opens and closes the rear seat air outlet 17. The opening degree of the rear seat air outlet 17 can be arbitrarily set by the rotation angle of the rear seat damper 9.

  The defroster damper 6, the vent damper 7, and the heat damper 8 are blowing direction switching dampers, and are connected by link members or the like so as to interlock with each other. The blowing direction switching damper is driven by a blowing direction switching actuator 74 shown in FIG. The blowing direction switching actuator 74 is controlled by the control device 70.

  For example, when the defroster damper 6 is in the open state and the vent damper 7 and the heat damper 8 are in the closed state, the blowout mode is the defroster mode, and when the vent damper 7 is in the open state, the blowout mode is the vent when the defroster damper 6 and the heat damper 8 are in the closed state. When the defroster damper 6 and the vent damper 7 are closed while the heat damper 8 is in the open state and the heat damper 8 is in the open state, the blowout mode becomes the heat mode. Further, it can be switched also to a differential heat mode (differential foot mode) in which the defroster damper 6 and the heat damper 8 are open, and a bi-level mode in which the vent damper 7 and the heat damper 8 are open.

  The vent mode is a mode selected during cooling, and the differential heat mode and the heat mode are modes selected during heating. The control device 70 controls the blowout direction switching actuator 74 based on the temperature of the passenger compartment and the temperature set by the occupant to operate the blowout direction switching damper so that the desired blowout mode is achieved. The blowout mode may be changed with the passage of time from the start of operation of the vehicle air conditioner A. For example, when heating is started, the heat mode is selected, and when the temperature in the cabin 101 rises and approaches the set temperature with the passage of time, another mode such as the bi-level mode may be selected. The blowing mode may be similarly changed also at the time of cooling.

  The rear seat damper 9 can be rotated separately from the defroster damper 6, the vent damper 7 and the heat damper 8. For example, the rear seat damper 9 can be operated by the rear seat vent actuator 75 shown in FIG. The rear vent actuator 75 is controlled by the controller 70. For example, the rear seat vent actuator 75 can be controlled such that the rear seat damper 9 is in the open state in the vent mode and the rear seat damper 9 is in the closed state in the defroster mode.

(Configuration of internal passage of air conditioning casing 10)
Inside the air conditioning casing 10, a cooling heat exchanger arrangement passage R1, a heating heat exchanger arrangement passage R2, an upper cold air passage R3 and a lower cold air passage R4 are provided. That is, on the front side inside the air conditioning casing 10, a cooling heat exchanger disposition passage R1 in which the cooling heat exchanger 2 is disposed is provided. The upstream end of the cooling heat exchanger disposition passage R1 is located at the front end of the inside of the air conditioning casing 10, and is in communication with the air inlet 10a. The entire amount of the air conditioning air flowing in from the air inlet 10a flows through the cooling heat exchanger disposition passage R1 and passes through the cooling heat exchanger 2. The cooling heat exchanger arrangement passage R1 extends up to the vertical plate portion 10f.

  On the rear side of the vertical plate portion 10f in the inside of the air conditioning casing 10, a heating heat exchanger disposition passage R2 in which the heating heat exchanger 3 is disposed is formed. An electric heater A is also disposed along with the heating heat exchanger 3 in the heating heat exchanger arrangement passage R2, and the air conditioning air flowing into the heating heat exchanger arrangement passage R2 is subjected to the heating heat exchange It is heated by the heater 3 and the electric heater A.

  The downstream end of the heat exchanger arrangement passage R1 for cooling is branched into two in the vertical direction. While the upper cold air passage R3 communicates with the upper side of the downstream end of the cooling heat exchanger arrangement passage R1 via the upper opening 11, the upper side of the heating heat exchanger arrangement passage R2 is the intermediate first opening It communicates through 18. On the lower side of the downstream end of the cooling heat exchanger arrangement passage R1, the lower cold air passage R4 communicates with the lower opening 13 and the lower side of the heating heat exchanger arrangement passage R2 is an intermediate first The two openings 19 communicate with each other.

  The upper cold air passage R3 is provided above the heating heat exchanger 3 and extends rearward. The lower cold air passage R4 is provided below the heating heat exchanger 3 and extends rearward. The upper cold air passage R3 and the lower cold air passage R4 bypass the heating heat exchanger arrangement passage R2 and extend, and are passages through which the cold air that has passed through the cooling heat exchanger 2 flows. Since the upper side cold air passage R3 is located above the vertical plate portion 10f, the cold air which has mainly passed the upper side of the cooling heat exchanger 2 flows in. Further, since the lower cold air passage R4 is located below the vertical plate portion 10f, the cold air that has mainly passed through the lower side of the cooling heat exchanger 2 flows in. The upstream ends of the upper cold air passage R3 and the lower cold air passage R4 are disposed to face the air outflow surface of the cooling heat exchanger 2, and the cold air flowing out of the air outflow surface of the cooling heat exchanger 2 is It easily flows into the upstream ends of the upper cold air passage R3 and the lower cold air passage R4.

  When the blower unit is in the internal air circulation mode, internal air flows into the upper cold air passage R3 and the lower cold air passage R4. Further, when the blower unit is in the outside air introduction mode, the outside air flows into the upper cold air passage R3 and the lower cold air passage R4.

  Furthermore, when the blower unit is in the inside / outside air two-layer flow mode, mainly the outside air flows into the upper cold air passage R3, and the inside air flows into the lower cold air passage R4. Then, since the outside air easily flows to the upper side of the air conditioning casing 10, the outside air, which is more dry than the inside air, is supplied from the defroster outlet 14 to the inner surface of the windshield G at the time of heating. Clouding of the inner surface of G is suppressed. On the other hand, heating efficiency can be enhanced in the inside / outside air two-layer flow mode by introducing inside air having a temperature higher than the outside air to the air conditioning casing 10.

(Configuration of upper air mix damper 4 and lower air mix damper 5)
The upper air mix damper 4 is a damper for changing the opening degree of the upper cold air passage R3, and the lower air mix damper 5 is a damper for changing the opening degree of the lower cold air passage R4. The upper air mix damper 4 and the lower air mix damper 5 are interlocked by being linked, for example, by a link member or the like. When the blower unit is in the inside / outside air two-layer flow mode, the flow rate of the outside air is mainly controlled by the upper air mix damper 4 and the flow rate of the inside air is controlled by the lower air mix damper 5.

  The upper air mix damper 4 has a rotating shaft 4a rotatably supported on left and right side walls of the air conditioning casing 10, and a closing plate 4b radially extending from the rotating shaft 4a. The plate portion 4b is a damper configured to change the opening degree of the upper cold air passage R3 by rotating around the rotation shaft 4a. The lower air mix damper 5 has a pivot 5a rotatably supported on left and right side walls of the air conditioning casing 10, and a closing plate 5b radially extending from the pivot 5a. The closing plate portion 5b is a damper configured to change the opening degree of the lower cold air passage R4 by pivoting around the pivot shaft 5a.

  The rotary shaft 4a of the upper air mix damper 4 is located in the vicinity of the front end of the upper holding plate portion 10d, and the closing plate portion 4b is laid out so as to extend forward and rotate in the vertical direction. It has become. When the closing plate portion 4b of the upper air mix damper 4 pivots upward, the upper opening 11 is fully closed, whereby the upper cold air passage R3 is closed, and the intermediate first opening 18 is fully opened. As a result, the upper side of the heating heat exchanger arrangement passage R2 is opened. On the other hand, when the closing plate portion 4b of the upper air mix damper 4 pivots downward, the upper opening 11 is fully opened, whereby the upper cold air passage R3 is opened, and the intermediate first opening 18 is completely opened. By being closed, the upper side of the heating heat exchanger arrangement passage R2 is closed. Further, the turning angle of the upper air mix damper 4 can be set arbitrarily, and for example, as shown in FIG. 5, the upper side at the position where the opening degree of the upper cold air passage R3 by the upper air mix damper 4 becomes a minute opening degree The air mix damper 4 is stopped or, as shown in FIG. 6, the upper air mix damper 4 is stopped at a position where the opening degree of the upper cold air passage R3 by the upper air mixing damper 4 is larger than the minute opening degree. It can also be done. When the upper cold air passage R3 is fully closed is referred to as 0% opening, and when the upper cold air passage R3 is fully open as 100%, the small opening is in the range of about 1% to 5%. It is. As shown in FIG. 5, when the opening degree of the upper cold air passage R3 is a minute opening degree, a gap is formed between the closing plate portion 4b of the upper air mix damper 4 and the inner surface of the air conditioning casing 10. become.

  The pivot shaft 5a of the lower air mix damper 5 is located in the vicinity of the front end portion of the lower holding plate portion 10e, and the closing plate portion 5b is laid out so as to extend forward and pivots vertically. It is supposed to be. When the closing plate portion 5b of the lower air mix damper 5 pivots downward, the lower opening 13 is fully closed, whereby the lower cold air passage R4 is closed, and the middle second opening 19 Is fully opened, and the lower side of the heating heat exchanger arrangement passage R2 is opened. On the other hand, when the closing plate portion 5b of the lower air mix damper 5 pivots upward, the lower opening 13 is fully opened, whereby the lower cold air passage R3 is opened, and the middle second opening When the position 19 is fully closed, the upper side of the heating heat exchanger arrangement passage R2 is closed. Further, the turning angle of the lower air mix damper 5 can be set arbitrarily, and for example, as shown in FIG. 5, the opening degree of the lower cold air passage R4 by the lower air mix damper 5 becomes a minute opening degree By stopping the lower air mix damper 5 at the position, or as shown in FIG. 6, the lower side at the position where the opening degree of the lower cold air passage R4 by the lower air mix damper 5 becomes larger than the minute opening degree. The air mix damper 5 can also be stopped. When the lower cold air passage R4 is fully closed is 0%, and when the lower cold air passage R4 is fully open 100%, about 1% to 5%. Range. As shown in FIG. 5, when the opening degree of the lower cold air passage R4 is a minute opening degree, a gap is formed between the closing plate portion 5b of the lower air mix damper 5 and the inner surface of the air conditioning casing 10. It will be

  The upper air mix damper 4 and the lower air mix damper 5 are driven by an air mix actuator 73 shown in FIG. The air mix actuator 73 is connected to the controller 70 and controlled by the controller 70. The control device 70 determines the target blowout air temperature based on the temperature in the vehicle compartment, the temperature set by the occupant, etc., and the upper air mix damper 4 and the lower air mix damper 5 are set to the determined target blowout air temperature. Calculate the opening degree of. Then, the control device 70 operates the air mix actuator 73 so that the upper air mix damper 4 and the lower air mix damper 5 have the calculated opening degree. Thereby, the air conditioning wind of desired temperature can be obtained.

(Divided structure of air conditioning casing 10)
As shown in FIG. 3 and FIG. 4, the air conditioning casing 10 is a separate member from the front side casing member 21 for housing the cooling heat exchanger 2 and the front side casing member 21, and the heating heat exchanger 3 and the electric heater A rear casing member 22 for accommodating A is provided, and the front casing member 21 and the rear casing member 22 are combined and integrated. The front casing member 21 is composed of an upper member 23 and a lower member 24 which are divided in the vertical direction. The rear casing member 22 is composed of a left member 25 and a right member 26 divided in the left-right direction. The upper air mix damper 4, the lower air mix damper 5, the defroster damper 6, the vent damper 7, the heat damper 8, and the rear seat damper 9 are accommodated in the rear casing member 22. The lower side of the cooling heat exchanger 2 is accommodated in the lower member 24.

  The front casing member 21 and the rear casing member 22 can be coupled by, for example, a claw fitting or a screw. The connection of the upper and lower members 23 and 24 and the connection of the left and right members 25 and 26 may be similar to the connection of the front and rear casing members 21 and 22.

  In the bottom wall portion of the air conditioning casing 10, between the cooling heat exchanger 2 and the lower air mix damper 5, the condensed water of the cooling heat exchanger 2 flows upward in the air flow direction, projecting upward. The water stop plate part 20 which suppresses these is provided. The water blocking plate portion 20 is formed on the upper portion of the lower side bulging portion 10i, and extends continuously in the left-right direction. The water blocking plate portion 20 and the bottom wall portion of the front side casing member 21 of the air conditioning casing 10 are integrally formed.

  The lower portion of the water blocking plate portion 20 is arranged to face the lower header tank 2 b of the cooling heat exchanger 2, while the upper portion of the water blocking plate portion 20 is of the cooling heat exchanger 2. It is arranged to face the air outflow surface. The upper end portion of the water blocking plate portion 20 is positioned below the center of the cross section upstream of the lower cold air passage R4 in the air flow direction. The cross-sectional center on the upstream side of the lower cold air passage R4 in the air flow direction is a portion through which the main flow of the cold air flowing in the lower cold air passage R4 passes. The position of the upper end is set.

  Furthermore, the water blocking plate portion 20 is formed between the lower air mix damper 5 and the inner surface of the air conditioning casing 10 when the opening degree of the lower cold air passage R4 by the lower air mix damper 5 is a minute opening degree. It arrange | positions so that it may oppose from the air flow direction upstream with respect to the clearance gap. Further, the tip (front end) of the closing plate portion 5b of the lower air mix damper 5 in which the lower cold air passage R4 has a small opening degree is a water shut plate compared to the state where the lower cold air passage R4 is fully closed. It is arranged to approach the part 20. That is, the water blocking plate portion 20 is formed in a flat plate shape, and is inclined so as to be positioned later as it approaches the upper end thereof. On the other hand, the locus of the tip end portion of the closing plate portion 5b of the lower air mix damper 5 is an arc-shaped locus centering on the rotation axis 5a. Therefore, in the process of setting the lower cold air passage R4 to a minute opening degree from the state where the lower cold air passage R4 is fully closed, the tip of the closing plate portion 5b of the lower air mix damper 5 and the water blocking plate 20 The interval between will gradually narrow.

  The upper wall portion of the air conditioning casing 10 is formed between the upper air mix damper 4 and the inner surface of the air conditioning casing 10 when the opening degree of the upper cold air passage R3 by the upper air mix damper 4 is a minute opening degree. An upper side plate portion 28 is provided so as to face the gap from the upstream side in the air flow direction. The upper side plate portion 28 is integrally formed with the upper side extending plate portion 10g, and extends continuously in the left-right direction. The upper plate portion 28 is disposed to face the air outflow surface of the cooling heat exchanger 2.

(Composition of occupant detection means)
The vehicle air conditioner A is provided with an occupant sensor 76 (shown in FIG. 7) as an occupant detection means capable of separately detecting an occupant at the front seat and an occupant at the rear seat. The occupant sensor 76 is connected to the control device 70, and outputs the detection result to the control device 70.

  The occupant sensor 76 can be configured of, for example, a seat belt sensor that detects the mounting state of a seat belt provided at each seat of the vehicle 100. The seat belt sensor is conventionally used and is a sensor for detecting whether or not the seat belt is attached. If the seat belt sensor detects that the seat belt is attached, it can be estimated that the occupant is seated on that seat, while if it detects that the seat belt is not attached, the occupant can sit on that seat. It can be estimated that you are not seated. This estimation is performed based on the output signal of the occupant sensor 76 in the control device 70, and can be performed separately for the front seat and the rear seat.

  Further, the occupant sensor 76 may be configured by, for example, a pressure sensor or the like incorporated in a seat cushion. When the occupant is seated, the sensor is configured to turn on the pressure sensor built in the seat cushion. Thus, when the pressure sensor is turned on, it can be estimated that the occupant is seated at that seat, but when the pressure sensor is turned off, it can be estimated that the occupant is not seated at that seat.

  The occupant sensor 76 is not limited to the seat belt sensor and the pressure sensor, and may be any other sensor or detector capable of detecting whether the occupant is seated in each seat or not. .

(Configuration of blower 50)
As shown in FIG. 7, the blower 50 includes a housing 51, a fan 52 housed inside the housing 51, a fan motor 53 for rotationally driving the fan 52, a lower louver damper 54, and a rear louver damper 55. And at least a first actuator 56 and a second actuator 57. The housing 51 is attached to the ceiling portion 106, and as shown in FIG. 2, has a shape that is long in the left-right direction. The left end of the casing 51 is located at the left end of the casing 101, and the right end of the casing 51 is located at the right end of the casing 101.

  In the front wall portion of the housing 51, an air inlet 51a for drawing in the air in the passenger compartment 101 is formed. The air intake port 51a is an opening through which air on the front side of the housing 51 can be taken into the inside of the housing 51, and can be, for example, elongated in the left-right direction.

  A lower air discharge port 51 b is formed on the rear side of the lower wall portion of the housing 51. The lower air discharge port 51b is positioned between the front side sheet 104 and the rear side sheet 105, and opens downward. The lower air discharge port 51b is elongated in the left-right direction, the left end of the lower air discharge port 51b is located at the left end of the compartment 101, and the right end of the lower air discharge port 51b is the vehicle compartment It is located at the right end of 101.

  In the rear wall portion of the housing 51, a rear air discharge port 51c is formed. The rear air discharge port 51c is open rearward. The rear air discharge port 51c is elongated in the left-right direction, the left end of the rear air discharge port 51c is located at the left end of the compartment 101, and the right end of the rear air discharge port 51c is the vehicle compartment It is located at the right end of 101.

  The fan 52 is configured by a cross flow fan having a rotation axis extending in the vehicle width direction. The fan 52 is disposed between the intake port 51a and the lower air discharge port 51b inside the housing 51, and at least both end portions in the left-right direction are rotatably supported by the housing 51 via bearings. ing. The fan 52 may be a fan other than the cross flow fan. In this case, the shape of the housing 51 may be changed according to the type of fan.

  The fan motor 53 is fixed to the housing 51, and is connected to the control device 70. The control device 70 controls ON / OFF switching and the number of rotations.

  The lower louver damper 54 functions as a door for opening and closing the lower air discharge port 51b of the housing 51, and as shown in FIGS. 1 and 8, the lower air discharge port 51b is opened, and FIG. As shown in FIG. 5, the lower air discharge port 51b is switched to the closed state. The lower louver damper 54 also functions as a swing louver for sequentially blowing air from one side in the front-rear direction of the casing 101 to the other side. That is, as shown in FIG. 10, the louvers are switched so that they are positioned forward as they go downward, and are switched so that they are located later as they go downward as shown in FIG. Then, the state shown in FIG. 11 is switched to the state shown in FIG. This is repeated. While the air discharged from the lower air discharge port 51b is guided by the lower louver damper 54 in the state shown in FIG. 10 toward the front of the compartment 101 and flows, the air is discharged from the lower air discharge port 51b in the state shown in FIG. The air is guided by the lower louver damper 54 to the rear of the passenger compartment 101 and flows.

  The first actuator 56 is for driving the lower louver damper 54, is connected to the control device 70, and is controlled by the control device 70.

  The rear louver damper 55 functions as a door for opening and closing the rear air outlet 51c of the housing 51, and as shown in FIGS. 1 and 9, the state where the rear air outlet 51c is opened; And as shown in FIG. 11, it is switched to the state which closed the back side air discharge port 51c.

  The second actuator 57 is for driving the rear louver damper 55, is connected to the control device 70, and is controlled by the control device 70.

  As shown in FIG. 1, when the lower louver damper 54 is opened by the first actuator 56 and the rear louver damper 55 is opened by the second actuator 57, simultaneous blowing mode in which air is blown simultaneously downward and backward is obtained. . Here, the lower side is a direction that divides the front seat and the rear seat, so an air curtain (a curtain by air) is formed.

  As shown in FIG. 8, when the lower louver damper 54 is opened by the first actuator 56 and the rear louver damper 55 is closed by the second actuator 57, the air is blown downward in the direction that divides the front seat and the rear seat. It becomes an air curtain mode to In this air curtain mode, a curtain of air is formed to separate the front and rear seats.

  As shown in FIG. 9, when the lower louver damper 54 is closed by the first actuator 56 and the rear louver damper 55 is opened by the second actuator 57, a rear air blowing mode in which air is blown toward the rear of the vehicle compartment 101. It becomes. A communication port 107a is provided on the rear side of the passenger compartment 101 to allow the passenger compartment 101 and the loading compartment 103 to communicate with each other. Therefore, exhaust air can be promoted by setting the rear air blowing mode, and the ventilation efficiency is improved.

  When the rear louver damper 55 is closed by the second actuator 57 and the lower louver damper 54 is swung back and forth by the first actuator 56 as shown in FIGS. It becomes a swing mode in which air is blown in order from one side to the other side in the front-rear direction. In the swing mode, the swing speed of the lower louver damper 54 can be adjusted, and the swing angle can also be adjusted.

  The blower 50 is configured to be able to select an arbitrary mode (referred to as a blowing mode) among the simultaneous blowing mode, the air curtain mode, the rear blowing mode, and the swing mode.

(Control of blower 50)
When the vehicle air conditioner A is turned on, the fan motor 53 of the blower 50 is also automatically turned on. However, when the occupant determines that the blower 50 does not require air flow, a switch (not shown) of the occupant is illustrated. The blower 50 can be turned off by the operation. In addition, as the rotation speed of the blower motor 71 of the air conditioner main body 1 is higher, the rotation speed of the fan motor 53 of the blower 50 can be increased. Although the number of rotations of the fan motor 53 of the blower 50 can be changed by an operation of a switch (not shown) by the occupant, it is basically controlled automatically.

  Next, mode selection of the blower 50 will be described. The mode selection is performed by the control device 70. Control device 70 controls blower 70 as described below based on the output signal of occupant sensor 76, the inside / outside air mode (including the opening degree of inside / outside air switching damper), the blowout mode, the number of rotations of blower motor 71, etc. Choose a mode.

  Specifically, when the vehicle air conditioner A is turned on and the occupant sensor 76 can not detect the occupant in the rear seat, the blower mode of the blower 50 is set to the air curtain mode. When the vehicle air conditioner A is turned on and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat, the blower mode of the blower 50 is set to the swing mode. In the case where the air conditioner main body 1 is in the inside / outside air double layer flow mode and in the heat mode in which the conditioned air is supplied near the feet of the occupant, the occupant sensor 76 is If it can not be detected, the blower mode of the blower 50 is set to the air curtain mode. In the case where the air conditioner main body 1 is in the inside / outside air double layer flow mode and in the heat mode in which the conditioned air is supplied near the feet of the occupant, the occupant sensor 76 When the passenger in the rear seat is detected, the air blowing mode of the air blower 50 is set to the rear air blowing mode.

  In addition, the situation where the temperature in the cabin is far from the set temperature and requires strong air conditioning (transition period) and the situation where the temperature in the cabin is close to the set temperature and only weak air conditioning is required (stable period) The blower mode of the blower 50 can be changed.

  In the transition mode in the vent mode, the rear air blowing mode is set both when the occupant sensor 76 can not detect the occupant in the rear seat and when the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat. As a result, the exhaust efficiency of the hot air contained in the passenger compartment 101 can be improved, and the quickness of the cooling can be enhanced.

  When it is in the stable phase in the vent mode and the occupant sensor 76 can not detect the occupant in the rear seat, the air curtain mode is set. As a result, the space for performing the air conditioning becomes narrow, so the cooling efficiency can be enhanced. When the occupant is in the stable mode in the vent mode and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat, the swing mode is set. Thus, the air in the passenger compartment 101 can be agitated, and the cooling efficiency can be enhanced.

  When the occupant is in the stable state in the bi-level mode and the occupant sensor 76 can not detect the occupant in the rear seat, the air curtain mode is set. As a result, the space for performing the air conditioning becomes narrow, so the cooling efficiency can be enhanced. When the occupant is in the stable state in the bi-level mode and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat, the swing mode is set. Thus, the air in the passenger compartment 101 can be agitated, and the cooling efficiency can be enhanced. The bi-level mode is a blowing mode not selected during the transition period.

  When in the transition mode in the heat mode and in the inside air circulation mode or the outside air introduction mode, when the occupant sensor 76 can not detect the occupant in the rear seat, and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat The blower 50 is turned off in both cases. This makes it possible to suppress the feeling of cold caused by the wind hitting the occupant.

  When in the transition period in the heat mode and in the internal / external air double layer flow mode, the occupant sensor 76 can not detect the occupant in the rear seat, and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat When both, set to the rear ventilation mode. As a result, the ventilation efficiency of the passenger compartment 101 is enhanced, and fogging is less likely to occur on the inner surface of the front window glass G.

  When the occupant in the rear seat can not be detected by the occupant sensor 76 when the heat mode is in the stable phase and the inside air circulation mode or the outside air introduction mode is not available, the air curtain mode is set. Since the space which air-conditions becomes narrow by this, heating efficiency can be improved. When the occupant is in the stable mode in the heat mode and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat, the swing mode is set. Thus, the air in the passenger compartment 101 can be agitated, and the heating efficiency can be enhanced.

  When the heat mode is in the stable period and the double-layer internal / external air flow mode can not be detected by the occupant sensor 76, the air curtain mode is set. Since the space which air-conditions becomes narrow by this, heating efficiency can be improved. When the heat mode is in the stable period, and the inside / outside air double layer flow mode is detected, and the occupant sensor 76 detects the front seat occupant and the rear seat occupant, the swing mode is set. Thus, the air in the passenger compartment 101 can be agitated, and the heating efficiency can be enhanced.

  When in the transition period in the differential heat mode and in the internal / external air double layer flow mode, the occupant sensor 76 can not detect the occupant in the rear seat, and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat In both cases, set the rear ventilation mode. As a result, the ventilation efficiency of the passenger compartment 101 is enhanced, and fogging is less likely to occur on the inner surface of the front window glass G.

  When the occupant in the rear seat can not be detected by the occupant sensor 76 when in the stable state in the diff heat mode and in the inside air circulation mode or the outside air introduction mode, the air curtain mode is set. Since the space which air-conditions becomes narrow by this, heating efficiency can be improved. When the occupant is in the stable state in the diff heat mode and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat, the swing mode is set. Thus, the air in the passenger compartment 101 can be agitated, and the heating efficiency can be enhanced.

  When it is in the stable phase in the differential heat mode, and in the internal / external air double layer flow mode and the occupant sensor 76 can not detect the occupant in the rear seat, the air curtain mode is set. Since the space which air-conditions becomes narrow by this, heating efficiency can be improved. The swing mode is set when the occupant is in the stable state in the diff heat mode and in the internal / external air double layer flow mode and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat. Thus, the air in the passenger compartment 101 can be agitated, and the heating efficiency can be enhanced.

  When in the steady state in the defroster mode and in the internal air circulation mode or the external air introduction mode, the occupant sensor 76 can not detect the occupant in the rear seat, and the occupant sensor 76 detects the occupant in the front seat and the occupant in the rear seat In both cases, set the rear ventilation mode. As a result, the ventilation efficiency of the passenger compartment 101 is enhanced, and fogging is less likely to occur on the inner surface of the front window glass G.

(Operation and effect of the embodiment)
As described above, according to the vehicle air conditioner A according to this embodiment, the temperature of the air conditioning air is adjusted by the air conditioner main body 1 and supplied to each part of the vehicle compartment 101. Since air is blown from the vicinity of the ceiling portion 106 of the vehicle compartment 101 separately from the apparatus body 1, a plurality of air flows can be created in the vehicle compartment 101, and the comfort of the occupant is improved.

  In addition, when the occupant sensor 76 can not detect the occupant in the rear seat, it can be estimated that the occupant is not in the rear seat. In this case, since the air blowing mode of the air blower 50 is set to the air curtain mode, a curtain of air, that is, an air curtain is formed between the front and rear seats by the air blower 50 while making the occupant's operation unnecessary. It will be As a result, the heating and cooling efficiency of the front seat is improved in any of the inside air circulation mode, the outside air introduction mode, and the inside and outside air two-layer flow mode.

  In addition, when the occupant sensor 76 detects an occupant in the front seat and an occupant in the rear seat, it can be estimated that the occupant is in both the front seat and the rear seat. In this case, since the blowing mode of the blower 50 is set to the swing mode, air is sent from the front seat, the rear seat, and the upper side by the blower 50 while making the operation of the occupant unnecessary. As a result, the blower 50 functions as a circulator in any of the inside air circulation mode, the outside air introduction mode, and the inside / outside air double-layer flow mode, so that the heating and cooling efficiency is improved in the entire cabin 101.

(Other embodiments)
The embodiments described above are merely illustrative in every respect and should not be construed as limiting. Furthermore, all variations and modifications that fall within the equivalent scope of the claims fall within the scope of the present invention.

  In the above embodiment, the damper of the blower 50 is a louver damper, but not limited to this, various dampers such as a cantilever type plate damper, a butterfly damper, and a rotary damper can be used.

  In the embodiment, air is sucked from the front side of the housing 51 of the blower 50. However, the present invention is not limited to this, and air may be sucked from below or behind the housing 51.

  Moreover, you may comprise so that the ventilation mode of the air blower 50 can be switched manually.

  As described above, the vehicle air conditioner according to the present invention can be mounted, for example, on an automobile provided with a front seat and a rear seat.

A Vehicle air conditioner 1 Air conditioner main body 50 Blower 52 Fan (cross flow fan)
70 Control device 76 Occupant sensor (Occupant detection means)
100 Vehicle 101 Cabin 104 Front Seat (Front Seat)
105 Rear seat (rear seat)
106 Ceiling

Claims (7)

An air conditioner main body configured to be capable of introducing air in a vehicle compartment and air outside the vehicle compartment as air conditioning air, and temperature-controlling air conditioning air to be supplied to each part of the vehicle compartment;
A blower separately from the air conditioner main body and disposed between a front seat and a rear seat in a ceiling portion of the cabin;
In a vehicle air conditioner comprising a control device for controlling the blower,
A passenger detection means for detecting a rear seat passenger;
The blower is configured to be able to select an air curtain mode for blowing air in a direction that divides the front seat and the rear seat,
An air conditioner for a vehicle, wherein the control device is configured to set a blowing mode of the blower to the air curtain mode when the occupant detection means can not detect an occupant at the rear seat. An air conditioner main body configured to be capable of introducing air in a vehicle compartment and air outside the vehicle compartment as air conditioning air, and temperature-controlling air conditioning air to be supplied to each part of the vehicle compartment;
A blower separately from the air conditioner main body and disposed between a front seat and a rear seat in a ceiling portion of the cabin;
In a vehicle air conditioner comprising a control device for controlling the blower,
An occupant detection means for detecting an occupant in the front seat and an occupant in the rear seat,
The blower is configured to be able to select a swing mode in which air is blown in order from one side to the other side in the longitudinal direction of the passenger compartment,
The air conditioning system for a vehicle, wherein the control device is configured to set a blowing mode of the blower to the swing mode when the occupant detection means detects the occupant in the front seat and the occupant in the rear seat. apparatus. In the vehicle air conditioner according to claim 1,
The occupant detection means is configured to be able to detect an occupant in the front seat and an occupant in the rear seat,
The blower is configured to be able to select a swing mode in which air is blown in order from one side to the other side in the longitudinal direction of the passenger compartment,
The air conditioning system for a vehicle, wherein the control device is configured to set a blowing mode of the blower to the swing mode when the occupant detection means detects the occupant in the front seat and the occupant in the rear seat. apparatus. In the vehicle air conditioner according to claim 1 or 3,
The air conditioner main body can be switched to any mode among an outside air introduction mode in which only outside air is introduced as air conditioning air, and an inside / outside air double layer flow mode in which inside air and outside air are simultaneously introduced as air conditioning air Configured and
In the control device, the air conditioner main body is in the inner and outer air double layer flow mode, and a heat mode for supplying conditioned air near the foot of the occupant, or air conditioning in the vicinity of the foot of the occupant and the inner surface of the windshield. The air blower mode is set to the air curtain mode when the rear seat occupant can not be detected by the occupant detection means in the differential heat mode for supplying wind. A vehicle air conditioner characterized by The vehicle air conditioner according to any one of claims 1 to 3.
The air conditioner main body can be switched to any mode among an outside air introduction mode in which only outside air is introduced as air conditioning air, and an inside / outside air double layer flow mode in which inside air and outside air are simultaneously introduced as air conditioning air Configured and
The blower is configured to be able to select a rear air blowing mode in which air is blown toward the rear side of the cabin,
In the control device, the air conditioner main body is in the inner and outer air double layer flow mode, and a heat mode for supplying conditioned air near the foot of the occupant, or air conditioning in the vicinity of the foot of the occupant and the inner surface of the windshield. When the differential heat mode for supplying wind is selected and the occupant detection means detects the occupant in the front seat and the occupant in the rear seat, the blower mode of the blower is set to the rear blower mode. A vehicle air conditioner characterized in that it is configured. The vehicle air conditioner according to any one of claims 1 to 3.
The blower is configured to be able to select a rear air blowing mode in which air is blown toward the rear side of the cabin,
The air conditioner main body is configured to be changeable to an outside air introduction mode in which only outside air is introduced as air conditioning air,
The control device is configured to set the air flow mode of the air blower to the air flow backward mode when the air conditioner main body is in the defroster mode for supplying the conditioned air to the inner surface of the windshield. A vehicle air conditioner characterized by In the vehicle air conditioner according to any one of claims 1 to 6,
A vehicle air conditioner characterized in that the fan of the blower is a cross flow fan having a rotating shaft extending in the vehicle width direction.

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