JP2007083774A - Air conditioner for vehicle rear seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To miniaturize a vehicle front/rear directional size of an indoor unit and simplify a drainage structure from an evaporator. <P>SOLUTION: An air conditioning case 11 is disposed with a blower 13 in its lower end side and the evaporator 18 in its upper side, and the evaporator 18 is disposed upright to make its ventilation direction face in almost front/rear direction of the vehicle. The evaporator 18 which is the largest incorporated component is disposed upright to miniaturize the vehicle front/rear directional size of the indoor unit 10. Condensed water generated in the evaporator 18 is discharged to the vehicle rear side, or the downstream side of the ventilation direction of the evaporator 18. The blower 13 is disposed in the lower end side but, in terms of the air flow, in the upstream side of the ventilation direction of the evaporator 18 and the condensed water is disposed in the vehicle rear side in the opposite side of the blower using the evaporator 18 as a border, thus simplifying the drainage structure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air conditioner disposed between a rear seat of a vehicle and a trunk room.

As a prior art, there is a heating / ventilation / air-conditioning device for a passenger compartment of an automobile disclosed in Patent Document 1 below. Since the entire air conditioner is vertical and symmetrical, it can be installed in both right-hand drive and left-hand drive vehicles.
JP-A-6-1556049

  However, in the above prior art air conditioner, since the heat exchanger is placed horizontally, the unit size in the vehicle front-rear direction increases, and it is difficult to mount as a rear seat air conditioner that requires mounting in a small space. There is a problem of becoming. Moreover, since the heat exchanger is disposed horizontally above the blower, there is a problem that the structure of the drainage passage of the condensed water generated by the cooling heat exchanger becomes complicated.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to reduce the size of the indoor unit in the vehicle front-rear direction and simplify the drainage structure from the cooling heat exchanger. An object of the present invention is to provide a vehicular rear seat air conditioner that can be converted into a vehicle.

In order to achieve the above object, the present invention employs technical means described in claims 1 to 4. That is, in the invention according to claim 1, it is an air conditioner disposed between a rear seat (RS) of a vehicle and a trunk room (TR),
An air conditioning case (11) forming an air passage;
A blower means (13) provided on one end side of the air conditioning case (11) and generating an air flow from the other end side to the vehicle interior;
A cooling heat exchanger (18) disposed downstream of the air blowing means (13) to cool the air,
A warm air bypass passage (20) flowing bypassing the cooling heat exchanger (18);
A cold air passage (22) through which the cooled cold air passes through the cooling heat exchanger (18), and
An air mixing section (26) for mixing warm air supplied from the warm air bypass passage (20) and cold air supplied from the cold air passage (22);
An opening (27) disposed on the downstream side of the air flow of the air mixing section (26) and for blowing air for air conditioning into the passenger compartment,
In the air conditioning case (11), the blower means (13) is disposed at the lower end side, the cooling heat exchanger (18) is disposed above the cooling means (18), and the cooling heat exchanger (18) is placed vertically to change the ventilation direction. It is characterized by being arranged so as to be substantially in the longitudinal direction of the vehicle.

  According to the first aspect of the present invention, since the wind flow is in one direction from the lower side to the upper side, the pressure loss can be reduced, and the cooling heat exchanger (18, which is the largest built-in component). ) In the vertical direction, the size of the indoor unit (10) in the longitudinal direction of the vehicle can be reduced, and the space of the trunk room (TR) can be expanded. Further, by setting the cooling heat exchanger (18) vertically, the condensed water generated in the cooling heat exchanger (18) is on the downstream side of the cooling heat exchanger (18) in the ventilation direction. Will be discharged.

  That is, the air blowing means (13) is arranged on the upstream side in the ventilation direction of the heat exchanger for cooling air flow (18) even at the lower end side, and the condensed water is bordered by the heat exchanger for cooling (18). Thus, the air is discharged to the vehicle rear side opposite to the air blowing means (13). Further, on the rear side of the vehicle, the cool air cooled through the cooling heat exchanger (18) flows upward, the condensed water flows downward due to gravity, and since the gas-liquid separation can be easily performed, the drainage structure is simplified. Can be

  Further, in the invention according to claim 2, in the air conditioner for the rear seat of the vehicle according to claim 1, the condensed water drainage part (11d) is formed below the vehicle rear side of the cooling heat exchanger (18). It is characterized by. According to the second aspect of the present invention, the drain case (11d) is formed as a condensed water drainage portion on the vehicle rear side lower side of the indoor unit (10) (the rear side of the air blowing means (13)), thereby condensing. It can be collected and discharged without leaking water.

  According to a third aspect of the present invention, in the vehicle rear seat air conditioner according to the first or second aspect of the present invention, both the warm air bypass passage (20) and the cold air passage (22) are provided with both passages. It is characterized by providing air volume adjusting means (21, 23) for adjusting the air flow. According to the third aspect of the present invention, by controlling the air volume adjusting means (21, 23) of both the passages (20, 22), it is possible to freely control the blowing temperature and the blowing volume. .

  According to a fourth aspect of the present invention, in the vehicle rear seat air conditioner according to the third aspect, in the air conditioning case (11), the air passage on the downstream side of the air blowing means (13) is used as the partition member (11e). The vehicle is divided into two substantially in the vehicle left-right direction, and air volume adjusting means (21a, 21b, 23a, 23b) are provided in each of the divided air passages.

  According to the fourth aspect of the present invention, so-called left and right independent control is possible, corresponding to the left and right divided air passages, and independently controlling the blowout temperature and the blowout air volume independently on the left and right sides of the rear seat of the vehicle. Become. Incidentally, the reference numerals in parentheses of the above means are examples showing the correspondence with the specific means described in the embodiments described later.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. FIG. 1 is a partial cross-sectional side view of a vehicle showing a mounted state of an indoor unit 100 of a vehicle rear seat air conditioner according to an embodiment of the present invention. The indoor unit 10 is a trunk room rear cooler unit disposed between the rear seat RS of the sedan type vehicle and the trunk room TR, and air-conditions the rear seat side space.

  FIG. 2 shows the indoor unit 10 in FIG. 1, (a) is a side view, and (b) is a front view as seen from the vehicle rear side. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2B and shows the internal structure of the indoor unit 10. The indoor unit 10 is mounted on the vehicle in the posture shown in FIGS. 1 and 3, and is roughly composed of two parts, an air conditioning unit 10A and a blower unit 10B (see FIG. 3).

  The air-conditioning case 11 forming the air passage is made of a resin molded product having some elasticity and excellent strength, such as polypropylene, and is composed of a plurality of divided cases. In the present embodiment, the air conditioning case 11 is divided into a right body case 11a, a left body case 11b, an inlet case 11c, a drain case 11d of a condensed water drainage part, and a partition plate 11e as a partition member, and these are fitted to each other. Are molded.

  The divided case accommodates components such as a heat exchanger 18 and a partition plate 11e, which will be described later, and air volume adjusting doors 21 and 23, which will be described later, and is then integrally coupled by a fastening means such as a metal spring clip or a screw. The case 11 is configured. The air blower unit 10B is disposed on the lower end side of the air conditioning case 11, and sucks air in the vehicle interior to generate an air flow from the upper end side of the air conditioning case 11 toward the vehicle interior.

  In the present embodiment, an inside air suction port 12 is formed in the vehicle left side direction (the surface direction in FIG. 2) of the blower unit 10B, and an electric blower 13 as a blower is provided on the inside side. The blower 13 includes a centrifugal multiblade fan 14 and a fan driving motor 15, and the centrifugal multiblade fan 14 is disposed in the scroll casing S.

  A duct portion 16 constituting a flow path extending from the outlet of the scroll casing S is formed on the air flow downstream side of the scroll casing S of the blower unit portion 10B. The duct portion 16 is for introducing the blown air blown from the blower unit portion 10B into a heat exchanger 18 described later. The duct unit 16 connects the outlet of the blower unit 10B to the air inlet 17 of the air conditioning unit 10A.

  The air conditioning unit 10A is provided on the upper side of the blower unit 10B, and includes an evaporator 18 as a cooling heat exchanger and air volume adjusting doors 21 and 23 in the body cases 11a and 11b.

  An air inflow portion 17 is provided at the most upstream part of the air conditioning unit 10 </ b> A, and air blown from the air blowing unit 10 </ b> B flows into the air inflow portion 17 through the duct portion 16. In the air conditioning case 11, an evaporator 18 is placed vertically at a site on the vehicle rear side of the air inflow portion 17 so that the ventilation direction is substantially the front-rear direction of the vehicle.

  As is well known, the evaporator 18 absorbs the latent heat of vaporization of the refrigerant in the refrigeration cycle from the air and cools the air. A large number of tubes are juxtaposed between the upper tank and the lower tank, and these tubes are arranged. A heat exchange fin is disposed between them. In addition, a drain case 11d is formed below the evaporator 18 on the vehicle rear side. The drain case 11d collects condensed water generated in the evaporator 18 and discharged to the cold air space 19 on the rear side (downstream side) of the vehicle, and is discharged from the lower drain port 111 to the outside of the vehicle.

  A warm air bypass passage 20 is formed above the evaporator 18 on the front side (upstream side) of the vehicle, and the air flowing into the air inflow portion 17 bypasses the evaporator 18 and flows upward as warm air. The warm air bypass passage 20 is provided with a warm air volume adjusting door 21 as an air volume adjusting means for adjusting the amount of warm air passing therethrough.

  Further, a cold air passage 22 is formed above the evaporator 18 on the rear side (downstream side) of the vehicle so that the air flowing into the air inflow portion 17 passes through the evaporator 18 and is cooled and flows upward as cold air. In the cold air passage 22, a cold air volume adjusting door 23 as an air volume adjusting means for adjusting the amount of cold air passing therethrough is rotatably arranged.

  Then, the warm air from the warm air bypass passage 20 and the cold air from the cold air passage 22 are merged into the downstream side (the vehicle upper side) of the warm air bypass passage 20 and the cold air passage 22 to thereby An air mixing portion 26 for mixing cold air is formed. Further, at the upper end portion of the air conditioning case 11, an opening 27 for blowing the conditioned air toward the vehicle interior side is opened at a portion of the air mixing portion 26 in the vehicle left-right direction. Air conditioning air mixed and temperature-controlled by the air mixing unit 26 flows into the opening 27.

  Left and right ventilation ducts (not shown) are connected to the openings 27 formed on the left and right sides of the air conditioning case 11, respectively. The ventilation ducts pass through the left and right rear pillars of the vehicle and rise into the ceiling of the vehicle. It is connected to a rear-seat face outlet provided in the seat ceiling, and air-conditioning air is blown out from this outlet toward the passenger's head and chest on the rear seat side in the vehicle interior.

  The blowing temperature and the blowing air volume can be freely controlled by manipulating the opening degrees of the warm air volume adjusting door 21 provided in the warm air bypass passage 20 and the cold air volume adjusting door 23 provided in the cold air passage 22. it can. For example, if the warm air flow adjustment door 21 is fully opened (O side in FIG. 3) and the cold air flow adjustment door 23 is fully closed (S side in FIG. 3), the maximum warm air state (max hot) is obtained. When the warm air flow adjustment door 21 is fully closed (S side in FIG. 3) and the cold air flow adjustment door 23 is fully opened (O side in FIG. 3), the maximum cold air state (max cool) is obtained.

  The increase / decrease and stop of the blown air volume can be controlled by the blower 13. However, the air volume can be finely adjusted by opening or closing the air volume adjusting doors 21 and 23 at the same ratio. is there. In FIG. 2A, reference numerals 24b and 25b denote door levers for operating the warm air flow adjustment door 21 and the cold air flow adjustment door 23 from the outer surface side of the case. Actuators such as servo motors (not shown) are provided on the door levers 24b and 25b. The actuator is connected and controlled by rotating the actuator with an air conditioning controller (not shown).

  The indoor unit 10 of the present embodiment divides the air passage in the air conditioning unit 10A into two parts in the left-right direction of the vehicle by the partition plate 11e so as to correspond to the left and right sides of the rear seat of the vehicle. The warm air volume adjusting door 21a, the left warm air volume adjusting door 21b, the right cold air volume adjusting door 23a, and the left cold air volume adjusting door 23b are provided.

  Correspondingly, as shown in FIG. 2 (b), right door levers 24a and 25a and left door levers 24b and 25b are formed on both sides of the indoor unit 10, and these are rotated by actuators. ing. In addition, the right and left side independent control is made such that the air mixing part is also independent of the right side 26a and left side 26b, and the opening part is also independent of the right side 27a and left side 27b.

  In other words, with this configuration, not only can the blowout temperature be varied independently on the left and right sides of the rear seat of the vehicle, but the blowout air volume can also be varied freely, such as the wind coming out only on one side and no air coming out on the other. It has become.

  Next, features and effects of this embodiment will be described. First, in the air conditioning case 11, the blower 13 is disposed on the lower end side and the evaporator 18 is disposed on the upper side thereof, and the evaporator 18 is disposed vertically so that the ventilation direction is substantially the front-rear direction of the vehicle.

  According to this, the pressure loss can be reduced because the wind flow is in one direction from the bottom to the top, and the evaporator 18 that is the largest built-in component is placed vertically, so that the indoor unit 10 The size in the vehicle front-rear direction can be reduced, and the space of the trunk room TR can be expanded. Further, by setting the evaporator 18 vertically, the condensed water generated in the evaporator 18 is discharged to the vehicle rear side, which is the downstream side in the ventilation direction of the evaporator 18.

  That is, even if the blower 13 is at the lower end side, the blower 13 is arranged on the upstream side in the ventilation direction of the evaporator 18 on the air flow, and the condensed water is discharged to the vehicle rear side opposite to the blower 13 with the evaporator 18 as a boundary. It will be. Further, on the vehicle rear side, the cool air cooled by passing through the evaporator 18 flows upward, the condensed water flows downward by gravity, and the gas-liquid separation can be easily performed, so that the drainage structure can be simplified.

  A drain case 11d is formed below the evaporator 18 on the vehicle rear side. According to this, by forming the drain case 11d as a condensed water drainage part below the vehicle rear side of the indoor unit 10 (rear side of the blower 13), the condensed water can be collected and discharged without leaking. .

  Also, air volume adjusting doors 21 and 23 for adjusting the air flow rate of both passages are provided in each of the warm air bypass passage 20 and the cold air passage 22. According to this, by controlling the air volume adjusting doors 21 and 23 of both the passages 20 and 22, the blowout temperature and the blown air volume can be freely controlled.

  In addition, the air passage on the downstream side of the blower 13 is substantially divided into two in the left-right direction of the vehicle by the partition plate 11e, and air volume adjusting doors 21a, 21b, 23a, and 23b are provided in the divided air passages, respectively. According to this, it is possible to perform so-called left and right independent control corresponding to the left and right divided air passages and independently controlling the blowout temperature and the blowout air volume independently at the left and right of the rear seat of the vehicle.

(Other embodiments)
In the above-described embodiment, the indoor unit 10 is a unit for the rear seat. However, the present invention is not limited to this, and the present invention is effectively applied to any vehicle air conditioner using a refrigeration cycle including an evaporator.

1 is a partial cross-sectional side view of a vehicle showing a mounted state of an indoor unit 10 of a vehicle rear seat air conditioner in an embodiment of the present invention. It is the indoor unit 10 in FIG. 1, (a) is a side view, (b) is the front view seen from the vehicle rear side. It is AA sectional drawing in FIG.2 (b), and shows the internal structure of the indoor unit 10. FIG.

Explanation of symbols

11 ... Air conditioning case 11d ... Drain case (condensate drainage)
11e ... Partition plate (partition member)
13 ... Electric blower (blower means)
18 ... Evaporator (cooling heat exchanger)
20 ... Warm air bypass passage 21 ... Warm air volume adjusting door (air volume adjusting means)
21a ... Right side warm air volume adjustment door (air volume adjustment means)
21b ... Left side warm air volume adjustment door (air volume adjustment means)
22 ... Cool air passage 23 ... Cool air flow adjustment door (air flow adjustment means)
23a ... Right side cold air volume adjustment door (air volume adjustment means)
23b ... Left side cold air volume adjustment door (air volume adjustment means)
26 ... Air mixing part 27 ... Opening part RS ... Rear seat TR ... Trunk room

Claims (4)

An air conditioner disposed between a rear seat (RS) of a vehicle and a trunk room (TR);
An air conditioning case (11) forming an air passage;
A blowing means (13) provided on one end side of the air conditioning case (11) and generating an air flow from the other end side to the vehicle interior;
A cooling heat exchanger (18) disposed downstream of the air blowing means (13) to cool the air,
A warm air bypass passage (20) flowing bypassing the cooling heat exchanger (18);
A cold air passage (22) through which the cooled cold air passes through the cooling heat exchanger (18);
An air mixing section (26) for mixing the warm air supplied from the warm air bypass passage (20) and the cold air supplied from the cold air passage (22);
An opening (27) disposed on the downstream side of the air flow of the air mixing section (26) and for blowing air for air conditioning into the passenger compartment,
In the air conditioning case (11), the air blowing means (13) is disposed on the lower end side, the cooling heat exchanger (18) is disposed on the upper side, and the cooling heat exchanger (18) is vertically disposed. An air conditioner for a rear seat of a vehicle, characterized in that the ventilation direction is substantially the front-rear direction of the vehicle.   2. The vehicle rear seat air conditioner according to claim 1, wherein a condensate drainage portion (11 d) is formed below the rear side of the cooling heat exchanger (18).   The air volume adjusting means (21, 23) for adjusting the air flow rate of both passages is provided in each of the warm air bypass passage (20) and the cold air passage (22). 2. A vehicle rear seat air conditioner according to 2.   In the air conditioning case (11), the air passage on the downstream side of the air blowing means (13) is substantially divided into two in the vehicle left-right direction by a partition member (11e), and the air volume adjusting means is provided in each of the divided air passages. The vehicle rear seat air conditioner according to claim 3, wherein (21a, 21b, 23a, 23b) is provided.

Images