JP2016179707A - Vehicular air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce uncomfortable feeling of an occupant during a defroster operation.SOLUTION: A vehicular air conditioner 1 includes a temperature adjustment chamber 30 to which outside air is introduced from inside of a vehicle or outside of the vehicle. The temperature adjustment chamber 30 includes: a face side open passage 31 and a foot side open passage 33 that are connected to a blowout port for an occupant inside of the vehicle; and a defroster open passage that is connected to a defroster and is partitioned by a partition wall 32b into a bypass communication passage 37 connected to an opening 37a1 located closer to a windshield inside the vehicle and a defroster side open passage 32 connected to an opening 32a1 located closer to the inside of the vehicle. A high-temperature air flow 37x discharged from the opening 32a1 is discharged from the opening 37a1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle air conditioner mounted on a vehicle such as an automobile.

  FIG. 5 is a schematic diagram showing the configuration of the vehicle air conditioner.

  The vehicle air conditioner 100 includes an intake chamber 10, a relay chamber 20, and a temperature adjustment chamber 30 that are arranged in order from the upstream side to the downstream side along the air flow.

  Outside air is introduced into the intake chamber 10, and the blower 11 that leads downstream from the relay chamber 20 and the open passage 12a that communicates with the inside of the vehicle and the open passage 12b that communicates with the outside of the vehicle are selectively opened and closed to be introduced into the room as outside air. An inside / outside selection door 12 is provided.

  Refrigerant is circulated in the temperature control chamber 30, the evaporator 34 that generates a low-temperature flow 30 x by lowering the temperature by exchanging heat with the air introduced from the relay chamber 20, and engine cooling water are circulated as hot water, The heater core 35 generates a high-temperature flow 30y by increasing the temperature by exchanging heat with the air via the evaporator 34, and is disposed between the evaporator 34 and the heater core 35, and is introduced into the heater core 35 via the evaporator 34. By controlling the flow rate of the air, a mixing door 36 that mixes the air that has passed through the evaporator 34 and the air that has passed through the heater core 35 and is driven freely by a servo motor is provided.

  Furthermore, the temperature control chamber 30 communicates with a face-side open circuit 31 that communicates with the air outlet near the occupant's upper body above the driver's cabin in the vehicle, and communicates with the air outlet near the passenger's feet below the vehicle's interior. A foot-side opening 33 and a defroster-side opening 32 communicating with the outlet of the defroster are provided, and each opening is adjusted to an open state or a closed state by the open / close doors 31a, 32a and 33a.

  The temperature control chamber 30 includes a temperature sensor 41 that measures the temperature of the evaporator 34, a temperature sensor 42 that measures the temperature inside the vehicle near the open passage 12 a of the intake chamber 10, and a temperature outside the vehicle near the open passage 12 b of the intake chamber 10. A temperature sensor 43 is provided for measuring each.

  Next, the ECU 40 includes a memory, a CPU, and the like, and is a means for controlling the vehicle air conditioner 100. Based on the input from the operator via a user interface (not shown) and the temperature detected by the temperature sensors 41 to 43, The refrigerant in the evaporator 34 and the hot water circulation in the heater core 35 are turned ON / OFF, the opening degree of the inner / outer selection door 12 and the mixing door 36 is adjusted, and the opening degree of the opening / closing doors 31a, 32a and 33a is adjusted to blow out into the vehicle The temperature, flow rate, and wind direction of the air-conditioned air are controlled (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 11-245642

  However, the conventional vehicle air conditioner 100 has the following problems. That is, as shown in FIG. 6, the warm air 320 z discharged from the opening 320 of the defroster side opening 32 through the blowout port 50 a of the defroster provided on the dashboard 50 is windshield 60 in the space A in the vehicle. Blown to the side. On the other hand, when the warm air 320z leaves the outlet 50a, it diverges into the space A and reaches the occupant side.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle air conditioner that can reduce occupant discomfort during defroster operation.

  In order to achieve the above object, a first aspect of the present invention includes an air conditioning chamber that receives introduction of outside air from inside or outside the vehicle, and the air conditioning chamber opens to an occupant opening that communicates with an outlet for an occupant in the vehicle. A first communication path that communicates with the road, a first opening that communicates with the first opening located near the windshield in the vehicle, and a second communication path that communicates with the second opening located near the interior of the vehicle The vehicle air-conditioning apparatus has a defroster opening path partitioned into two, and discharges air having a temperature higher than air discharged from the second opening from the first opening.

  Furthermore, the present invention includes, as another aspect, a cooling means for cooling the air-conditioned room, and a heating means for heating the air-conditioned room located downstream of the cooling means in the air flow. The communication path may be closer to the heating unit than the second communication path and communicate with the air conditioning chamber.

  The present invention as described above has an effect that the occupant's discomfort can be reduced during defroster operation.

The figure which shows the structure of the vehicle air conditioner which concerns on embodiment of this invention. The figure which shows the structure of the principal part of the vehicle air conditioner which concerns on embodiment of this invention. The figure for demonstrating operation | movement of the vehicle air conditioner which concerns on embodiment of this invention. The figure which shows the other structural example of the vehicle air conditioner which concerns on embodiment of this invention. The figure which shows the structure of the conventional vehicle air conditioner The figure for demonstrating operation | movement of the conventional vehicle air conditioner

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a configuration of a vehicle air conditioner 1 according to an embodiment of the present invention. However, components that are the same as or equivalent to those in FIG.

  In the temperature control chamber 30, the bypass communication path 37 is a pipe having one end communicating with the temperature control chamber 30 and the other end adjacent to the defroster-side open path 32 and sharing an opening. Further, the defroster-side open passage 32 and the partition wall of the bypass communication passage 27 form an integrated partition wall 32b, and the defroster-side open passage 32 separated by the partition wall 32b directly receives the air flow 32x introduced from the temperature control chamber 30 side. It is made to distribute | circulate and it blows off from opening 32a1. On the other hand, the bypass communication passage 37 introduces an air flow 37x introduced from the temperature control chamber 30 side and blows it out from the opening 37a1. The bypass communication passage 37 is adjusted to an open state or a closed state by an open / close door 37a in the same manner as other open circuits.

  Further, in the temperature control chamber 30, the position where the opening of the bypass communication path 37 is disposed is located closer to the heater core 35. Therefore, air that is more susceptible to heating by the heater core 35 than the defroster-side open passage 32 is introduced into the bypass communication passage 37. Thus, the temperature of the air flow 37x passing through the bypass communication passage 37 is higher than that of the air flow 32x passing through the defroster side open passage 32.

  FIG. 2 is a perspective view showing a configuration in the vicinity of the defroster side open circuit 32 in the vehicle air conditioner 1. As shown in FIG. 2, the opening 32a1 of the defroster side opening 32 and the opening 37a1 of the bypass communication path 37 partitioned by the partition wall 32b are slit-like extending along the longitudinal direction of the dashboard 50 and the windshield 60 (not shown). It has an outer shape, the opening 37a1 is located closer to the windshield 60, and the opening 32a1 is located on the passenger side in the vehicle. Further, the opening 32a1 has a larger opening area than the opening 37a1 because the dimension along the width direction, that is, the short direction of the dashboard 50 and the windshield 60 is increased. The longitudinal dimension of the opening 37a1 may be smaller than the opening 32a1.

  In the above configuration, the vehicle air conditioner 1 corresponds to the vehicle air conditioner of the present invention, and the temperature control chamber 30 corresponds to the air conditioner of the present invention. Further, the face-side opening 31 and the foot-side opening 33 correspond to an opening for passengers of the present invention, and the combination of the defroster-side opening 32 and the bypass communication path 37 corresponds to a defroster opening of the present invention. Further, the defroster side opening 32 corresponds to the first communication path of the present invention, and the bypass communication path 37 corresponds to the second communication path of the present invention.

  The vehicle air conditioner 1 according to the embodiment of the present invention having such a configuration includes a defroster-side open passage 32 and a bypass communication passage 37 that are adjacent to each other by a partition wall 32b, and allows air flows at different temperatures to pass therethrough. To do.

  That is, as shown in FIGS. 1 and 3, during the defroster operation of the vehicle air conditioner 1, the air flow maintained at the predetermined temperature during the defroster operation from the opening 32 a 1 near the windshield 60 from the defroster side open path 32. While 32x is discharged, an air flow 37x having a temperature higher than that of the air flow 32x is discharged from the opening 37a1 of the bypass communication passage 37. As a result, a space A1 having a high temperature atmosphere and a space A2 having a low temperature atmosphere are formed in the vehicle with a boundary 70 based on the temperature difference as a boundary, and the windshield 60 in the space A1 is heated to prevent condensation or fogging from being removed. While the clouding effect is exhibited, the air flow 32x having a lower temperature diverges in the space A2, thereby reducing discomfort to the occupant.

  Furthermore, in the present embodiment, as shown in FIG. 3, the defroster side open passage 32 through which the air flow 32x passes has a sectional area S1 near the opening 32a1 smaller than a sectional area S2 near the temperature control chamber 30, In addition, it has a tapered shape whose cross-sectional area continuously decreases. As a result, the velocity of the air flow 32x in the opening 32a1 of the defroster-side open passage 32 is made larger than the velocity of the air flow 37x to facilitate the formation of the boundary 70, and the defrosting effect of the defroster and the influence of the temperature inside the room can be reduced. The effect is further improved.

  Note that the boundary between the defroster-side open path 32 and the bypass communication path 37 may have a configuration in which the tip is tapered like a partition wall 32c in the configuration example shown in FIG. In this case, the discharge direction of the air flow 32x and the air flow 37x can be adjusted to be away from each other, and the depth of the boundary 71 forming the temperature difference, that is, the dimension along the distance between the passenger and the windshield 60 is increased. The possibility that the spaces A1 and A2 may thermally interfere with each other can be reduced, and the defrosting effect of the defroster and the effect of reducing the influence of the temperature in the room can be further improved.

  Thus, according to the vehicle air conditioner of the present embodiment, it is possible to reduce occupant discomfort during defroster operation.

  However, the present invention is not limited to the above embodiment. In the above description, the position where the opening of the bypass communication path 37 is disposed in the temperature control chamber 30 is the bypass communication path as an air introduction position that is more susceptible to heating by the heater core 35 than the defroster side opening 32. The temperature of the air flow 37x passing through the air 37 is set to be larger than the temperature of the air flow 32x passing through the defroster side open circuit 32.

  On the other hand, the opening 37a1 of the bypass communication passage 37 passes the temperature of the air flow 37x through the defroster-side open circuit 32 as an air introduction position that is less directly affected by the heating by the heater core 35 than the defroster-side open circuit 32. You may make it make it smaller than the temperature of the air flow 32x to do. In this case, the positions of the openings 32a1 and 37a1 shown in FIG. 2 are reversed so that the opening 32a1 is arranged on the windshield 60 side.

  In short, the defroster opening path of the present invention is not limited as long as it discharges air at a higher temperature than the air discharged from the second opening toward the inside of the vehicle from the first opening located on the windshield side. It is not limited by the formation method of the air which has.

  Furthermore, in the above description, the present invention has been described by taking as an example a configuration in which the defroster side opening 32 is provided on the vehicle windshield 60 side, but may be implemented in a configuration in which a defroster opening is provided on the side glass side. .

  As described above, the present invention is an air conditioner for a vehicle, and includes an air conditioning chamber that receives the introduction of outside air from inside or outside the vehicle, and the air conditioning chamber communicates with an outlet for the passenger in the vehicle. And a first communication path that communicates with the first opening located near the windshield in the vehicle and a second communication path that communicates with the second opening located near the interior of the vehicle. Any other specific purpose or application may be used as long as it has a partitioned defroster opening and discharges air having a temperature higher than that of air discharged from the second opening from the first opening. The configuration is not limited.

  Therefore, the present invention may be implemented by adding various modifications to the above embodiment, including those described above, as long as they do not depart from the spirit of the present invention.

  The present invention as described above has an effect that it is possible to reduce the discomfort of the occupant during the defroster operation, and is useful in application to, for example, a passenger car.

DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner 12a, 12b Open circuit 30 Temperature control chamber 31 Face side open circuit 32 Defroster side open circuit 32a1, 37a1, 320 Opening 32b, 32c Partition 32x, 37x Air flow 33 Foot side open circuit 35 Heater core 37 Bypass communication path 50 Dashboard 50a Outlet 60 Windshield 70, 71 boundary

Claims (1)

It has an air conditioning room that receives outside air from inside or outside the car,
The air conditioning room is
An opening for an occupant communicating with an outlet for the occupant in the vehicle;
A first communication path that communicates with a defroster and communicates with a first opening located near the windshield in the vehicle and a second communication path that communicates with a second opening located near the interior of the vehicle. And a defroster opening.
From the first opening, air having a temperature higher than that discharged from the second opening is discharged.
Vehicle air conditioner.

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