JPH062444B2 - Vehicle air conditioner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner mounted on an automobile, and more particularly to an air conditioner for independently controlling the temperature of a driver seat side and a passenger seat side.

(Prior Art) Conventionally, an air conditioner of this type has also been proposed by the present applicant, for example (Japanese Patent Application No. 61-185873), and its outline is shown in FIGS. 4 and 5. .

This is one in which two air passages 3a and 3b are formed in front of the air distribution chamber 17, and the respective air passages 3a and 3b are provided.
Blower 10 that can control the rotation speed independently on the upstream side of
a and 10b are arranged, and a heat exchanger 1 for cooling is provided on the downstream side.
2 has a full reheat type structure in which the heat exchangers 13a and 13b for heating are arranged in series. The heat exchanger 12 for cooling is common to both air passages 3a and 3b, while the heat exchangers 13a and 13b for heating are common.
Is arranged in each air passage so that the amount of hot water can be adjusted independently. Thereby, the blowers 10a and 10b
Rotation and heat exchanger 13a. The flow rate of 13b is controlled separately for the left and right sides, so that the left side and the right side of the vehicle compartment can be individually air-conditioned.

(Problems to be solved by the invention) However, in the above-described air conditioner, since the heat exchanger for heating is separately arranged for each air passage for temperature control, the piping becomes complicated. However, there is a drawback that it is difficult to reduce the cost. Moreover, since it is a full reheat type, it is not possible to control the temperature above and below the air passage, and there is the inconvenience that it is difficult to realize air conditioning of head cold foot heat especially in the bilevel mode.

In view of the above, the present invention has been made to solve the above-mentioned drawbacks, and the cost can be reduced by simplifying the structure, and the temperature can be controlled independently not only on the left and right sides of the vehicle interior but also on the up and down sides. It is an object to provide an air conditioner for use.

(Means for Solving Problems) However, the gist of the present invention is to provide blowers 10a and 10b capable of independently controlling the number of revolutions in the air passages 3a and 3b formed on the left and right, respectively. A heat exchanger 12 for cooling and a heat exchanger 13 for heating which are common to both the air passages 3a and 3b on the downstream side of the blowers 10a and 10b.
And are arranged in series, and the air distribution chamber 17a,
17b is formed for each of the air passages 3a, 3b. The air passages 3a, 3b are provided with bypass passages 16a, 16b for bypassing above the heat exchanger 13 for heating, and the respective bypass passages 16a. , 16b are provided with independently operable bypass doors 18a, 18b, and the respective air distribution chambers 17a, 17b are provided with a defrost blow-out port 19 and an upper blow-out port 20a at the downstream side of the heat exchanger 13 for heating. 20b and one or both of the foot outlets 21a and 21b are provided with a common air distribution door 24.

(Operation) Therefore, if the rotational speeds of the blowers 10a and 10b are individually adjusted to the left and right, even if the position of the air distribution door 24 is uniquely determined according to each mode, the total amount of air flowing through the air passages 3a and 3b is reduced. Since the air volume changes, the left and right temperature states of the air distribution chambers 17a and 17b can be widely varied. In addition to this, by independently operating the bypass doors to adjust the amount of air passing through the bypass passages 16a and 16b, the temperature of the air sent to the upper side of the air distribution windows 17a and 17b can be independently set up and down for each of the air passages 3a and 3b. Then, the temperature can be adjusted. Therefore, except the bypass doors 18a and 18b and the blowers 10a and 10b, the left and right air passages 3a and 3b are provided.
However, the above-mentioned problems can be achieved because the air conditioning control can be separately performed for the left and right sides and the upper and lower sides of the vehicle interior.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 to FIG. 3, the air conditioner is divided into two parts on the upstream side of the case 1, and the rear integrated part is divided by a partition plate 2 with the center as a boundary. Two left and right air passages 3a and 3b are formed.

Blower storage chambers 4a and 4b are formed on the upstream side of the air passages 3a and 3b, that is, in the portion where the case 1 is bifurcated, and the bell mouths 5a and 5a are formed beside the blower storage chambers 4a and 4b. Intake part 6 communicating via 5b
a and 6b are formed. Inside / outside air switching doors 9a, 9b for switching between the inside air inlets 7a, 7b and the outside air inlets 8a, 8b are arranged at the intake portions 6a, 6b, and the blower storage chambers 4a, 4b are provided with a blower 10 made of, for example, Shirotsuko Juan.
a and 10b are connected to and housed in separate motors 11a and 11b.

A partition plate 2 is provided on the rear side of the case 1 in an integrated manner.
A heat exchanger 12 for cooling and a heat exchanger 13 for heating, which are common to both air passages 3a and 3b, are arranged in series in this order via the. A heat medium is supplied to the heat exchanger 13 for heating through a pipe 14 drawn out to the outside, and the flow rate of this heat medium is adjusted by a flow control valve 15 provided in the pipe. The heating amount is controlled. In addition, a bypass passage 16 is provided above the heat exchanger 13 for heating and between the case 1 and the case 1.
a, 16b are formed, and the air that has passed through the cooling heat exchanger 12 passes through the heating heat exchanger 13 or the bypass passage 16 and is formed on the final flow side of each of the air passages 3a and 3b. It is designed to be sent to the chambers 17a and 17b. The amount of air passing through the bypass passages 16a and 16b is controlled by the bypass doors 18a and 18b provided for each air passage.

Each of the air distribution chambers 17a and 17b has a defrost outlet 19 formed on the upper surface of the case 1 and upper outlets 20a and 20b formed on the upper front (each air passage 3a and 3b has an outlet. And the foot outlet 21 formed below both side surfaces.
a and 21b are connected to each other, and a defrost door 22 and a vent door 23 for controlling opening and closing of the defrost outlet 19 and upper outlets 20a and 20b, respectively.
However, the foot outlets 21a and 21b are provided with air distribution doors 24 for supporting the case 1 for adjusting the opening degree of the openings. Further, the air distribution door 24 allows the air passing through the heat exchanger 13 for heating to be blown into the upper outlets 20a, 2a.
0b and the foot outlets 21a, 21b, and when opened to the maximum, the communication with the upper outlet 20 is cut off, and only the communication with the foot outlets 21a, 21b is established.

The differential door 22, the vent door 23, and the air distribution door 24 are arranged via the partition plate 2, and both air passages 3a, 3 are provided.
It is common in b. In particular, as shown in FIG. 3, the air distribution door 24 is of a type in which the parts arranged in the respective air passages 3a and 3b are provided coaxially and move in the same manner, and is arranged behind the heat exchanger for heating. Heat exchanger 1 for heating
3 is contacted with a guide piece 25 extending from the upper end of the air distribution chamber 1
The air distribution chambers 17a and 17b are separated by a first stationary position that divides the upper and lower parts 7a and 17b from each other and the substantially center of the heat exchanger for heating.
a second stationary position that divides b into upper and lower portions and a guide piece 26 that extends from the lower portion of the case 1 to be in contact with the foot outlet 21.
The air distribution is such that the air passing through the heat exchanger 13 for heating is distributed above and below the air distribution chambers 17a and 17b. It has a function as a door.

Therefore, when the blowers 10a and 10b rotate, the inside air and the outside air selected by the inside / outside air switching doors 9a and 9b are separately sucked, and then pass through the air passages 3a and 3b, and the heat exchanger for cooling without mixing. 12 and the heat exchanger 13 for heating or the bypass passages 16a and 16b to reach the air distribution chambers 17a and 17b, and the outlet 1 selected according to the mode.
Air that has passed through the right air passage 3a via 9, 20, 21a, and 21b is blown into the vehicle compartment from the right side, and air that has passed through the left air passage 3b is blown into the vehicle interior from the left side.

In the above configuration, the blowers 10a, 10b and the bypass doors 18a, 18b arranged in the respective air passages 3a, 3b can be operated independently of the other air passages, and therefore, as shown in Table-1. Various usage conditions can be realized.

First, in the vent mode, open the vent door 23,
The differential door 22 is closed and the ventilation door 24 is placed in the third rest position. For example, if the right side of the vehicle is to be MAX vented and the left side is to be in the temperature control mode, the right side bypass door 18a may be fully opened and the left side bypass door 18b may be closed. As a result, on the right side, the air that has passed through the heat exchanger 12 for cooling receives the heat exchanger 13 for heating and the bypass passage 18a.
And then all of the air is delivered to the upper outlet 20. On the other hand, on the left side, all the air that has passed through the cooling heat exchanger 12 enters the heating heat exchanger 13 in which the heating medium has flowed, and the heating heat exchanger 13 adjusts the temperature as appropriate and then the upper part. It is sent to the outlets 20a and 20b.

In the bi-level mode, the vent door 23 is opened and the differential door 22 is closed. In the cold air mode, the bypass doors 18a and 18b are opened, and the air distribution door 24 is set to the first stationary position. In the same temperature mode, the air distribution door 24 may be set to the second stationary position and the bypass doors 18a and 18b may be set to arbitrary positions. As a result, in the cold air mode, all the air that has passed through the heating heat exchanger 13 in which the heat medium has flowed is sent to the foot outlets 21a and 21b, and the amount of cool air sent to the upper outlet 20 is the bypass passages 16a and 16b. It is determined by the opening degree of. That is, the temperature difference between the upper and lower sides can be made large in the cold air mode. On the other hand, in the same temperature mode, the air that has passed through the heat exchanger 13 for heating in which the heat medium has flown is distributed by the air distribution door 24, and about half of the air is guided downward by the air distribution door 24 and the foot outlet 21a, 2
Sent to 1b. About the other half is the air distribution chambers 17a, 17b
Is mixed with the air that has passed through the bypass passages 16a and 16b according to the positions of the bypass doors 18a and 18b, and is sent to the upper outlets 20a and 20b together.
Therefore, in each of the air passages 3a and 3b, the air sent to the upper side of the air distribution chambers 17a and 17b is the air distribution door 2
Bypass doors 18a, 18b even if the position of 4 is the same
The temperature can be adjusted by controlling the opening degree of. That is, in the same temperature mode, there is no difference between the upper and lower temperatures, or the difference can be reduced. If the rotational speeds of the blowers 10a and 10b are controlled separately, the left and right temperature control is controlled while affecting the upper and lower temperatures.

In the heater mode, the bypass doors 18a, 18a
b, the vent door 23 and the differential door 22 are closed, and the air distribution door 24 is placed in the first stationary position. In this case, blower 10
If the rotational speeds of a and 10b are adjusted separately for left and right, the temperature of the air blown out through the foot outlets 21a, 21b can be controlled individually for left and right.

In the differential heat mode, the differential door 22 is opened, the vent door 23 is closed, and the air distribution door 24 is in the second stationary position. Bypass doors 18a, 18b in this case
May be set at any position. Then, the air heated by the heating heat exchanger 13 in which the heating medium is flowed is distributed by the air distribution door 2
4, the air is sent to the defrost outlets 19 and the foot outlets 21a and 21b approximately half by half, and the air passing through the bypass passages 16a and 16b is further sent to the defrost outlets 19 according to the positions of the bypass doors 18a and 18b. Therefore, even in this mode, the bypass door 18a,
By controlling 18b, the temperature of the air sent to the defrost outlet 19 can be adjusted, and by controlling the number of revolutions of the blowers 10a, 10b, the temperature of the air sent to the foot outlets 21a, 21b can be adjusted.

In the defrost mode, the bypass doors 18a, 1
8b and the vent door 23 are closed, the air distribution door 24 is set to the third stationary position, and the differential door 22 is opened. As a result, all the air that has passed through the heat exchanger 12 for cooling enters the heat exchanger 13 for heating in which the heat medium has flowed, where the temperature is adjusted appropriately and then sent to the defrost outlet 19. Also in this case, as in the heater mode, by adjusting the left and right rotation speeds of the blowers 10a and 10b separately, the temperature of the air blown out through the defrost outlet 19 can be individually controlled.

In the present embodiment, the case where the differential door 22 and the vent door 23 are separately arranged is shown. However, even if the defrost outlet 19 and the upper outlets 20a and 20b are switched by one door, the same operational effect can be obtained. Is what you get.

(Effects of the Invention) As described above, according to the present invention, even if the components other than the bypass door and the blower are common to the left and right air passages,
Depending on the opening of the bypass door and the rotation speed of the blower, the temperature of the air flowing upward in the air distribution chamber and the temperature of the air flowing downward can be adjusted separately for each air passage. The temperature can be controlled independently. Further, since the components other than the bypass door and the blower are common to the left and right air passages, the structure can be simplified and the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing an embodiment of the present invention, FIG. 2 is a side sectional view of the same as above, FIG. 3 is a perspective view of an air distribution door in the same as above, and FIG. FIG. 5 and FIG. 5 are side sectional views of the same as above. 3a, 3b ... Air passage, 10a, 10b ... Blower, 12
... Heat exchanger for cooling, 13 ... Heat exchanger for heating, 16
a, 16b ... bypass passage, 17a, 17b ... air distribution chamber,
18a, 18b ... Bypass doors, 24 ... Winding doors.

Claims (1)

[Claims] 1. Blowers 10a, 10 capable of independently controlling the number of revolutions in each of air passages 3a, 3b formed on the left and right.
b is provided, and the heat exchanger 12 for cooling common to both air passages 3a and 3b is provided on the downstream side of the blowers 10a and 10b.
And a heat exchanger 13 for heating are arranged in series, and air distribution chambers 17a, 17b are formed on the downstream side of the air passages 3a, 3b, respectively. Bypass passage 1 bypassing above the heat exchanger 13 of
6a and 16b are provided, and bypass doors 18a and 18b that can be independently operated are arranged in the bypass passages 16a and 16b, respectively.
a and 17b are provided with a common air distribution door 24 that connects the downstream side of the heat exchanger 13 for heating to one or both of the defrost outlet 19, the upper outlets 20a and 20b, and the foot outlets 21a and 21b. A vehicle air conditioner characterized by comprising.