JP2016215753A - Air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner for a vehicle capable of adjusting balance of an air volume of the outside air that two indoor blasters suck.SOLUTION: An air conditioner for a vehicle includes a plate member 7 which guides an outside air 9 that advances through an advancement inlet 6, and two indoor blasters 8a, 8b which suck the outside air 9 having been guided by the plate member 7 and send the outside air 9 to the inside of a room. The plurality of indoor blasters 8a, 8b include the indoor blaster 8a arranged near the advancement inlet 6 and the indoor blaster 8b arranged far away from the advancement inlet 6 than the indoor blaster 8a. The plate member 7 evenly distributes the outside air 9 that is sent to the indoor blaster 8a from the advancement inlet 6 and the outside air 9 sent to the indoor blaster 8b from the advancement inlet 6.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle air conditioner, and more particularly to an outside air intake mechanism of a vehicle air conditioner.

  Conventionally, in a vehicle ventilator composed of an air supply device for supplying fresh air into a vehicle and an exhaust device for discharging contaminated air inside the vehicle, the vehicle interior temperature and the outside air temperature are detected. If the temperature is higher, adjust the air volume to increase the supply air volume or reduce the exhaust air volume, and if the outside air temperature is lower, adjust the air volume to reduce the supply air volume or increase the exhaust air volume. There has been proposed a railway vehicle ventilator characterized in that (see Patent Document 1).

Japanese Patent Publication No.58-9022

  As shown in FIG. 7, for example, an air conditioner for a railway vehicle described in Patent Document 1 includes a heat exchanger 50, indoor fans 80 a and 80 b, and a return air port 130 inside an indoor unit 30. ing. As shown in FIG. 8, fresh outside air 90 is taken into the vehicle air conditioner 100 from the outside air inlet 22 by the ventilation blower 40. And the outside air 90 merges with the return air in the vehicle taken in from the return air port 130 via the entrance 60, and is sucked into the indoor fans 80a and 80b. At this time, the indoor blower 80a is closer to the entrance 60 than the indoor blower 80b and sucks a lot of fresh outside air 90 as compared to the indoor blower 80b. Therefore, the indoor blower 80a and the indoor blower 80b are evenly mixed with the outside air. There was a problem that 90 could not be incorporated. As a result, when the temperature difference between the return air temperature in the vehicle and the outside air 90 is large, there is a large difference between the air blown into the vehicle from the indoor blower 80a and the air blown into the vehicle from the indoor blower 80b. A temperature difference sometimes occurred.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle air conditioner that can adjust the balance of the volume of outside air sucked by two indoor fans. And

  A vehicle air conditioner according to the present invention includes a plate member that guides outside air that has entered from an opening, and two indoor fans that suck the outside air guided by the plate member and send the outside air into the room. And the two indoor fans are a first indoor fan arranged near the opening and a second indoor fan arranged farther than the first indoor fan with respect to the opening. The plate member distributes the outside air sent from the opening to the first indoor blower and the outside air sent from the opening to the second indoor blower equally. is there.

  According to the present invention, the plate member of the vehicle air conditioner equally distributes the outside air sent from the opening to the first indoor blower and the outside air sent from the opening to the second indoor blower. By doing in this way, the vehicle air conditioner which can adjust the balance of the air volume of the external air which two indoor air blowers inhale from an opening part can be obtained.

It is the schematic which shows the whole structure of the vehicle air conditioner which concerns on Embodiment 1 of this invention. It is the schematic which shows the flow of the air inside the air conditioner for vehicles which concerns on Embodiment 1 of this invention. It is an enlarged schematic diagram which shows another shape of the board member of the air conditioning apparatus for vehicles which concerns on Embodiment 1 of this invention. It is an enlarged schematic diagram which shows another shape of the board member of the air conditioning apparatus for vehicles which concerns on Embodiment 1 of this invention. It is the schematic which shows the whole structure of the air conditioning apparatus for vehicles which concerns on Embodiment 2 of this invention. It is a flowchart which shows operation | movement of the control apparatus of the board member of the air conditioning apparatus for vehicles which concerns on Embodiment 2 of this invention. It is the schematic of the indoor unit of the conventional vehicle air conditioner. It is the schematic which shows the flow of the air inside the conventional air conditioning apparatus for vehicles.

  Hereinafter, embodiments of the heating cooker of the present invention will be described with reference to the drawings. In addition, the form of drawing is an example and does not limit this invention. Moreover, what attached | subjected the same code | symbol in each figure is the same or it corresponds, and this is common in the whole text of a specification. Furthermore, in the following drawings, the relationship between the sizes of the constituent members may be different from the actual one.

Embodiment 1 FIG.
FIG. 1 is a schematic diagram showing an overall configuration of a vehicle air-conditioning apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, the vehicle air conditioner 1 includes a ventilation blower 4 and an indoor unit 3 that constitutes a part of the refrigeration cycle of the vehicle air conditioner 1. The vehicle air conditioner 1 is also formed with an outside air inlet 2 and a return air port 13. The indoor unit 3 includes a heat exchanger 5, a plate member 7 (hereinafter also referred to as a rectifying plate), an indoor fan 8a, an indoor fan 8b, and a plate 14. Two entrances 6 are formed in the plate 14, and an air passage 15 is provided between the entrance 6 and the indoor fans 8a and 8b. The plate member 7 forms an L-shaped cross section by a plate member 7c provided at a position facing the entrance 6 and a plate member 7d provided at a right angle to the plate member 7c and longer than the plate member 7c. . The entrance 6 corresponds to the “opening” in the present invention. The indoor blower 8a corresponds to the “first indoor blower” in the present invention. The indoor blower 8b corresponds to the “second indoor blower” in the present invention.

  In the first embodiment, an example in which the vehicle air conditioner 1 includes the ventilation fan 4 and the vehicle air conditioner 1 is formed with the outside air inlet 2 is shown. It is not limited, The vehicle air conditioner 1 without the ventilation fan 4 and the external air inlet 2 may be sufficient. Moreover, although the example which provided the entrance 6 in the plate 14 in two places in this Embodiment 1 was shown, this invention is not limited to this, The entrance 6 in one place or three places or more is provided in the plate 14. Also good.

  The return air port 13 is formed in the indoor unit 3 and takes in the return air that circulates in the vehicle into the indoor unit 3. The outside air inlet 2 is an opening for taking fresh outside air 9 (see FIG. 2) from the outside of the vehicle into the vehicle air conditioner 1. The ventilation blower 4 takes outside air 9 taken into the vehicle air conditioner 1 from the outside air inlet 2 into the indoor unit 3.

  The entrance 6 guides the outside air 9 taken into the interior of the indoor unit 3 from the ventilation fan 4 to the heat exchanger 5. The outside air 9 that has passed through the entrance 6 and the return air taken in from the return air port 13 merge in the indoor unit 3 and are sent to the heat exchanger 5. The plate member 7 is provided in the air passage 15 between the entrance 6 and the indoor fans 8a and 8b, and the outside air 9 guided from the entrance 6 is guided to the indoor fans 8a and 8b by the plate member 7c and the plate member 7d. To do.

  The heat exchanger 5 exchanges heat between the refrigerant flowing inside the heat exchanger 5 and the air passing through the heat exchanger 5, and generates heating air or cooling air to be supplied into the vehicle To do. The indoor blower 8b is disposed at a position farther than the indoor blower 8a with respect to the entrance 6. The indoor blower 8a and the indoor blower 8b send the outside air 9 and return air that have passed through the heat exchanger 5 into the room.

  FIG. 2 is a schematic diagram showing the flow of air inside the vehicle air-conditioning apparatus according to Embodiment 1 of the present invention. Note that the arrows in FIG. 2 indicate the flow of the outside air 9. As shown in FIG. 2, fresh outside air 9 taken from the outside air inlet 2 is sent into the indoor unit 3 through the ventilation fan 4. The outside air 9 sent to the indoor unit 3 merges with return air that circulates in the vehicle via the entrance 6 and the plate member 7. The merged outside air 9 and return air are sent to the heat exchanger 5 to exchange heat with the refrigerant flowing through the inside of the heat exchanger 5 to become cold air or hot air. The cold air or hot air subjected to heat exchange is blown indoors by the indoor fan 8a and the indoor fan 8b.

  When the outside air 9 is sent from the entrance 6 to the heat exchanger 5 and the plate member 7 is not installed, the indoor air blower 8a provided at a position close to the entrance 6 as shown in FIG. A lot of outside air 9 is inhaled. On the other hand, since a small amount of outside air 9 is sucked into the indoor blower 8b provided at a position far from the entrance 6 as compared with the indoor blower 8a, the amount of the outside air 9 sucked between the indoor blowers 8a and 8b is increased. Differences are likely to occur.

  Here, the plate member 7 composed of the plate member 7c and the plate member 7d is provided in the air passage 15 between the entrance 6 and the indoor fans 8a and 8b. The plate member 7c installed between the entrance 6 and the indoor fans 8a, 8b changes the wind direction of the outside air 9 so that the outside air 9 flowing from the entrance 6 is not directly sucked into the indoor fans 8a, 8b. Lead to member 7d. Then, the plate member 7d guides the outside air 9 to the indoor fans 8a and 8b. Here, the plate member 7d is designed to have such a length that the outside air 9 is evenly distributed and sucked to the indoor fan 8a and the indoor fan 8b. The length of the plate member 7d is experimentally determined in consideration of the size of the indoor fans 8a and 8b and the amount of outside air 9 and the like. By doing in this way, it becomes possible to distribute and send outside air 9 from the entrance 6 to the indoor blower 8a and the indoor blower 8b. In the first embodiment, the example in which the outside air 9 is sent “evenly” from the entrance 6 to the indoor blower 8a and the indoor blower 8b is shown. However, “equal” described here needs to be strictly equalized. It includes the concept of “substantially equal”. The same applies to the second embodiment described later. In the first embodiment, the example in which the length of the plate member 7d is longer than the length of the plate member 7c has been described. However, the present invention is not limited to this, and the operating rotational speed of the indoor fans 8a and 8b and the outside air 9 The length of the plate member 7d may be shorter than the length of the plate member 7c, or the plate member 7d may not be provided depending on the situation such as the air volume.

  FIG. 3 is an enlarged schematic view showing another shape of the plate member of the vehicle air conditioner according to Embodiment 1 of the present invention. FIG. 4 is an enlarged schematic view showing another shape of the plate member of the vehicle air conditioner according to Embodiment 1 of the present invention. As shown in FIG. 3, the plate member 7 has an L-shaped cross section having a right angle. However, an R-shaped chamfering process may be applied to an L-shaped corner portion like the plate member 7a. Further, as shown in FIG. 4, a linear plate such as a plate member 7b may be installed at a certain angle. By doing so, it is possible to reduce the air resistance and noise of the outside air 9 when passing through the air passage 15.

[Effect of Embodiment 1]
From the above, according to the first embodiment, the vehicle air conditioner 1 includes the plate 14 provided with the entrance 6 for introducing the outside air and the plate member for guiding the outside air 9 entered from the entrance 6. 7 and two indoor fans 8a and 8b for sucking the outside air 9 guided by the plate member 7 and sending the outside air 9 into the room. The plurality of indoor fans 8 a and 8 b include an indoor fan 8 a and an indoor fan 8 b disposed at a position farther from the indoor fan 8 a with respect to the entrance 6. The plate member 7 distributes the outside air sent from the entrance 6 to the indoor blower 8a and the outside air sent from the entrance 6 to the indoor blower 8b evenly. By doing in this way, the air conditioner 1 for vehicles which can adjust the balance of the air volume of the external air which the indoor air blower 8a and the indoor air blower 8b suck | inhale from the entrance 6 can be obtained. As a result, for example, when the temperature difference between the return air temperature in the vehicle and the outside air 9 is large, between the air blown into the vehicle from the indoor blower 8a and the air blown into the vehicle from the indoor blower 8b. A large temperature difference is not generated, and the effect of improving the comfort in the vehicle can be obtained.

  Further, according to the first embodiment, the plate member 7 has an L-shaped cross section, and the corners are subjected to R chamfering. By doing in this way, the air conditioning apparatus 1 for vehicles which reduces the air resistance and noise of the external air 9 at the time of passing the wind path 15 can be obtained.

Embodiment 2. FIG.
Since the basic configuration of the vehicle air conditioner 1 according to the second embodiment is the same as that of the vehicle air conditioner 1 according to the first embodiment, the present embodiment will be mainly described below with respect to differences from the first embodiment. Form 2 will be described. The difference between the first embodiment and the second embodiment is that the plate member 7 of the first embodiment is fixed, whereas the plate member (rectifier plate) of the second embodiment is rotatable. There is a point.

  FIG. 5 is a schematic diagram showing the overall configuration of the vehicle air-conditioning apparatus according to Embodiment 2 of the present invention. As shown in FIG. 5, the vehicle air conditioner 1 includes a plate member 11 and a control device 20 that controls the plate member 11. The plate member 11 (hereinafter also referred to as a rectifying plate) is provided so as to be rotatable about a side 16 close to the indoor fan 8a and the indoor fan 8b.

  The control device 20 controls the plate member 11 to rotate the plate member 11 in the direction of the rotation direction 12. For example, the control device 20 can set the angle corresponding to the high speed operation or the low speed operation of the indoor fans 8a and 8b by setting the rotation angle of the plate member 11 to two stages. The control device 20 sets the angle of the plate member 11 to 0 ° (no change) when the indoor fans 8a and 8b are operating at high speed. In this way, the air volume of the outside air 9 is evenly taken into the indoor fan 8a and the indoor fan 8b. Moreover, the control apparatus 20 inclines the angle of the board member 30 by 30 degrees, when the indoor air blowers 8a and 8b are low-speed driving | operations. In this way, the air volume of the outside air 9 is evenly taken into the indoor fan 8a and the indoor fan 8b.

  FIG. 6 is a flowchart showing the operation of the plate member control device of the vehicle air conditioner according to Embodiment 2 of the present invention. Hereinafter, the control operation of the vehicle air conditioner 1 will be described with reference to FIG.

(Step ST1)
The control device 20 determines whether the operation changeover switches of the indoor fans 8a and 8b are high speed operation or low speed operation. When the indoor blowers 8a and 8b are operating at high speed, the control device 20 proceeds to step ST2, and when the indoor fans 8a and 8b are operating at low speed, the control device 20 proceeds to step ST3.

(Step ST2)
The control device 20 sets the angle of the plate member 11 (rectifying plate) to 0 °. Then, the control apparatus 20 transfers to step ST1.
(Step ST3)
The control device 20 sets the angle of the plate member 11 (rectifier plate) to 30 °. Then, the control apparatus 20 transfers to step ST1.

  From the above, according to the second embodiment, the plate member 11 is configured to be rotatable about the shaft 16 on one side close to the indoor fan 8a, 8b side. By doing in this way, in addition to the effect of Embodiment 1, according to the size of the vehicle body and the operating environment of the vehicle air conditioner 1, efficient induction of fresh outside air 9 to the indoor fans 8a and 8b Is possible.

  In the second embodiment, the example in which the angle of the plate member 11 can take a two-step inclination of 0 ° or 30 ° is shown. However, the present invention is not limited to this, and it is also possible to control the plate member 11 more efficiently by adding sensors and performing multi-stage angle control based on more detailed information. is there. For example, it is assumed that the number of revolutions of the indoor fans 8a and 8b during high-speed operation is 1150 (rpm) and the number of revolutions of the indoor fans 8a and 8b during low-speed operation is 870 (rpm). Here, when the medium-speed operation mode is provided and the rotation speed of the medium-speed operation is, for example, about 1000 (rpm), the angle of the plate member 11 is set to about 15 °, and the plate member 11 is in a high-speed operation (0 ° C.) You may comprise so that the inclination of 3 steps | paragraphs at the time of high speed driving | running (15 degrees) and low speed driving | running | working (30 degreeC) may be taken. Moreover, you may change the length and magnitude | size of the board member 11 suitably according to the frequency | count of operation and magnitude | size of indoor fan 8a, 8b, or the taking-in amount of the external air 9. FIG. Further, the angle of the plate member 11 during the high-speed operation, the medium-speed operation, and the low-speed operation is not limited to the value exemplified in the second embodiment, and the number of times and the size of the indoor fans 8a and 8b are operated or Other angles may be set as appropriate in accordance with the amount of uptake.

  DESCRIPTION OF SYMBOLS 1 Vehicle air conditioner, 2 Outside air inlet, 3 Indoor unit, 4 Ventilation fan, 5 Heat exchanger, 6 entrance, 7 Plate member, 7a Plate member, 7b Plate member, 7c Plate member, 7d Plate member, 8a Indoor blower, 8b Indoor blower, 9 Outside air, 11 Plate member, 12 Rotating direction, 13 Return air port, 14 Plate, 15 Air path, 16 axis, 20 Control device, 22 Outside air intake port, 30 Indoor unit, 40 Ventilation blower , 50 Heat exchanger, 60 entrance, 80a indoor fan, 80b indoor fan, 90 outside air, 100 vehicle air conditioner, 130 return air port.

Claims (4)

A plate member that guides outside air that has entered from the opening;
Two indoor fans for sucking the outside air guided by the plate member and sending the outside air into the room,
The two indoor fans are a first indoor fan arranged near the opening, and a second indoor fan arranged farther than the first indoor fan with respect to the opening. Become
The plate member equally distributes outside air sent from the opening to the first indoor blower and outside air sent from the opening to the second indoor blower. apparatus. The vehicle air conditioner according to claim 1, wherein the plate member has an L-shaped cross section. The vehicular air conditioner according to claim 2, wherein the plate member has R chamfered corners. The vehicle air conditioner according to claim 1, wherein the plate member is rotatable about one side close to the two indoor fan sides.

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