JPH01223014A - Air conditioner of automobile - Google Patents

Abstract

PURPOSE:To enable a single equipment to execute both the temperature control and the ventilation by connecting a pair of ceiling ducts, a floor duct, a connection duct, an exhaust duct and a branch duct to each other and placing both a blower and a damper inside each of these ducts. CONSTITUTION:A vehicle 3 has in the ceiling 4 thereof ceiling ducts 1 and 2 having supply/discharge grills 1a and 2a, respectively and in the floor 6 a floor duct 5 containing a suction blower 7 and an evaporator 8. Each of the ceiling ducts 1 and 2 is connected to the floor duct 5 by a plurality of connection ducts 9 and 10. A plurality of branch ducts 12 and 13 project from the connection ducts 9 and 10, respectively and the projection ends of these ducts 12 and 13 are connected to an exhaust duct 11 at the end and the middle point thereof, respectively. A blower 15 is contained in the joint point of one 12 of the branch ducts and the exhaust duct 11. On the other hand, a plurality of dampers 16-19 are placed inside the fluid circuit consisting of the ducts 1, 2, 5 and 9-13.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an air conditioner for an automobile, and more particularly to an air conditioner for an automobile that can employ various modes.

(Prior Art) Conventionally, a temperature control device and a ventilation device have been installed independently in an automobile, and temperature-controlled air and clean air outlets have been provided at different positions.

Therefore, in addition to the space for the temperature control device, space for the ventilation device is required, making it difficult to secure the optimal space for each. In short, the cost was high. It is known that even when the ventilation device is activated, cigarette smoke actually rises to the ceiling, making it difficult to perform rapid and effective ventilation.

(Problem to be solved by the invention) As a solution to the above problem, the Utility Model Publication No. 61-41612
There is a proposal for the issue. Specifically, bypass ducts are attached to the front and rear of the heater core in the main body duct, and a discharge path for the air inside the vehicle is appropriately formed by switching dampers.

However, according to this configuration, since the exhaust tact is only provided upstream of the heater core, the heater core cannot be activated when air is exhausted from the passenger compartment, and due to its structure, rising cigarette smoke is sucked in. There is also the problem that it is difficult.

The present invention was made under these circumstances, and is intended to provide an air conditioner for an automobile that can quickly and reliably clean the air while controlling the temperature in a desired mode.

(Means for Solving the Problems) That is, the automotive air conditioner according to the present invention includes a pair of ceiling ducts each having an intake/exhaust grill, a floor duct having a temperature controller and an intake blower, and each of the pair of ceiling ducts having an intake/exhaust grill. A connecting tact that connects a base end to a base end of a floor duct, an exhaust duct that carries out exhaust to the outside of the vehicle, a branch duct that connects at least one of the connecting ducts to the exhaust duct, and the branch. a blower disposed on the exhaust duct side of the duct; and a damper provided at a branch point between the connecting duct and the branch duct to selectively open and close between the one connecting tact and the floor tact or the branch tact. It is composed of:

(Function) According to the above configuration, if the damper is rotated to close the ceiling duct and the connecting duct that communicate one of the pair of ceiling ducts and the branch duct, and the blower is driven, the vehicle Indoor air is sucked into the ceiling duct from one intake/exhaust grill, and is exhausted outside the vehicle through the branch duct and exhaust duct (ventilation mode). At this time, if the temperature controller and intake blower are driven, the air inside the vehicle is sucked into the floor duct, dehumidified and cooled or heated, and returned to the vehicle interior through the other intake/exhaust grill (ventilation mode and air conditioner mode).

In addition, when the damper is rotated to close the branch duct (the ceiling duct and the connecting duct communicate), a path is formed that connects the floor duct and the intake/exhaust grill, and when the temperature controller and suction blower are driven, The air inside the vehicle is sucked into the floor duct, dehumidified and cooled or heated, and then returned to the vehicle interior through both intake and exhaust grilles (air conditioner mode).

In this manner, by rotating the duct, it is possible to select ventilation mode only, ventilation mode and air conditioner mode, or air conditioner mode only.

(Example) Fig. 1 is a plan view of an embodiment of the air conditioner, Fig. 2 is a front view showing the above usage state, Fig. 3 is a front view of the instrument panel, and Fig. 4 is the A/C ( Fig. 5 is a plan view of ventilation mode, Fig. 6 is a plan view of clean mode, Fig. 7 is a plan view of (A/C + ventilation) mode,
FIG. 8 is a plan view of the (A/C ten clean) mode.

In the figure, 1 and 2 are intake and exhaust grilles la and 2, respectively.
The ceiling duct has a ceiling duct a and is arranged in parallel on the ceiling 4 of the car 3. Reference numeral 5 denotes a floor duct arranged on the floor 6 of the car 3, and the floor duct 5 is equipped with a suction blower 7 at its end and a temperature controller, an evaporator 8 in the embodiment, in the middle. . 9 is a connecting duct that connects the base end of the one ceiling duct 1 and the base end of the floor duct 5, and 10 is the base end of the other ceiling duct 2 and the base end of the floor duct 5. This is a connecting duct that connects the 11 is an exhaust duct.

Then, from the middle part of the connecting ducts 9 and 10, a branch duct 1 is connected.
2.13 is provided protrudingly, the protruding tip of one branch duct 12 is connected to the end of the exhaust duct 11, and the other branch duct 1 is connected to the end of the exhaust duct 11.
The protruding tip portion of No. 3 is connected to the midway portion of the exhaust duct 11.

Reference numeral 14 denotes a cleaning filter disposed in the middle of the branch duct 12, and an activated carbon filter or a dust collection filter is used as the cleaning filter 14. 15 is a blower disposed at the connection between the branch duct 12 and the exhaust duct 11. That is, in the present invention, in addition to the suction blower 7 described above, an additional blower 15 is provided so that ventilation and cleaning can be performed at all times (regardless of whether it is in A/C mode or not).

As described above, the first to fourth dampers 16 to 19 are arranged in the fluid path formed by connecting various ducts, and the configuration allows selection and change of the transfer path of the fluid (outside air or inside air). has been done.

That is, the first damper 16 is provided at the connection between the connecting duct 9 and the branch duct 12, and
It plays a role of selectively opening and closing the connection port of the connecting duct 9 and the position of the connecting duct 9 near the floor duct 5.

The second damper 17 is provided at the connection between the connecting duct 10 and the branch duct 13, and has the role of selectively opening and closing the connection start end of the branch duct 13 and the position of the connecting duct 10 near the floor duct 5. I'm in charge.

The third damper 18 is provided at the location where the clean filter 14 is installed, and is connected to the mounting surface of the clean filter 14 and the branch duct 1.
It plays the role of selectively opening and closing the connecting duct 5 and the position near the connecting duct 9.

The fourth damper 19 is provided at the connection between the exhaust duct 11 and the branch duct 13, and has the role of selectively opening and closing the position of the exhaust duct 11 near the outside of the vehicle and the connection port of the branch duct 13. .

And the above first) fourth damper 16.17°18.1
9 is braked to a position corresponding to the required mode by pressing buttons 21 to 24 provided on the instrument panel 20. button 21 here
is the air conditioner mode button, 23 is the ventilation mode button, 24 is the OFF operation button, and these buttons 2
By the suppression operations 1 to 24, the dampers 16 to 19 are rotationally controlled as described above, and at the same time, the suction blower 7 and the blower 15 are controlled to turn on and off.

And the first to fourth dampers 16, 17°18.1
9 is braked to a position corresponding to the required mode by pressing buttons 21 to 24 provided on the instrument panel 20. Here, button 2
1 is an air conditioner mode button, 22 is a clean mode button, 23 is a ventilation mode button, and 24 is an OFF operation button. By pressing these buttons 21 to 24, the dampers 16 to 19 are activated as described above. is rotationally controlled, and at the same time suction blower 7 and blower 15 are turned on.
Controlled OFF.

Next, the manner of use of the above embodiment device will be explained.

■Of course, the button 24 is pressed when not in use.
Both the suction blower 7 and the blower 15 are in a stopped state.

■Press button 21 to select A/C (air conditioner) mode. This operation drives only the suction blower 7 (the blower 15 is in the OFF state), and as shown in FIG. 4, the first damper 16 and the second damper 17 each close the connection port of the branch duct 12.13. As a result, a path is formed by the ceiling duct 1゜2, the floor duct 5, and the connecting duct 9.10, and the air inside the vehicle is sucked into the floor duct 5 by the suction blower 7, which is appropriately arranged for the purpose of dehumidification. It passes through the heater core, the mix door 25, etc., and the evaporator 8, is guided to the ceiling ducts 1 and 2 via the connecting ducts 9 and 10, and returns to the vehicle interior through the intake and exhaust grilles la and 2a formed in the ceiling ducts 1 and 2.

Note that in the case of the A/C mode, the third damper 18 and the fourth damper 19 may be located at any position.

■When adopting the ventilation mode, press button 23.

By this operation, only the blower 15 is driven (the suction blower is in the OFF state), and as shown in FIG. 5, the first damper 16 closes the connecting duct 9 side (opens the branch duct 12 side), and the third damper 18 closes the cleaning filter 14 side (opens the branch duct 12 side), and the fourth damper 19 closes the branch duct 13 side (opens the exhaust duct 11 side). As a result, the ceiling duct 1, the branch duct 12, and the exhaust A path is formed by the duct 11, and air inside the vehicle is sucked into the ceiling duct 1 from the intake/exhaust grille 1a by the blower 15, and is discharged to the outside of the vehicle through the branch duct 12 and the exhaust duct 11. Therefore, the cigarette smoke rising near the ceiling 4 can be quickly and reliably exhausted from the intake/exhaust grill located in the upper part of the passenger compartment.

In addition, in the case of the said ventilation mode, the 2nd damper 17 may be located in any position.

■If you want to use the clean mode, press button 22. By this operation, only the blower 15 is driven (the suction floor 7 is in the OFF state), and as shown in FIG. 6, the second damper 17 is moved to the connecting duct l.

Close the side (open the branch duct 13 side) and close the third damper 18
closes the branch duct 12 side (opens the clean filter 14 side)
, the fourth damper 19 closes the exhaust duct 11 side (opens the branch duct 13 side), and as a result, the clean filter 14 becomes usable, and the branch duct 1 is removed from the clean filter 14.
2. A path is formed to reach the exhaust duct 11, the branch duct 13, and the ceiling duct 2, and the cleaning filter 14 is introduced from outside the vehicle.
The purified air is guided into the vehicle interior from the intake/exhaust grille 2a of the ceiling duct 2.

In addition, in the case of the above-mentioned clean mode, the first damper 16 may be located at any position.

Further, the device of the embodiment can combine the A/C mode with the ventilation mode, or the A/C mode with the ventilation mode. That is, when setting to ■A/C mode+ventilation mode, push buttons 21 and 23. By this operation, both the suction blower 7 and the blower 15 are driven, and as shown in FIG. 7, the first damper 16 closes the connecting duct 9 side (opens the branch duct 12 side), and the second damper 17 Close the branch duct 13 side (connection duct lo
The third damper 18 closes the clean filter 14 side (opens the branch duct 12 side), the fourth damper 19 closes the branch duct 13 side (opens the exhaust duct 11 side), and as a result, An exhaust route from the ceiling duct 1 to the exhaust duct 11 via the branch duct 12, and from the suction blower 7 to the floor duct 5.
, a circulation path that reaches the ceiling duct 2 via the connecting duct 10. In other words, the former route is a route that sucks air inside the car through the ceiling and exhausts it outside the car.
The latter route is a route in which the air inside the vehicle is sucked in, passed through the evaporator 8, and guided back into the interior of the vehicle. If this mode is adopted, air conditioning can be performed while providing ventilation.

■When selecting A/C mode + clean mode, press button 21.
and press button 22. By this operation, both the suction blower 7 and the blower 15 are driven, and as shown in FIG. 8, the first damper 16 closes the branch duct 12 side (opens the connecting duct 9 side), and the second damper 17 The connecting duct IO side is closed (the branch duct 13 side is opened), the third damper 18 closes the branch duct 12 side (the clean filter 14 side is opened),
The fourth damper 19 closes the exhaust duct 11 side (opens the branch duct 13 side), and as a result, the clean air introduction path from the clean filter 14 to the ceiling duct 2 via the exhaust duct 11 and the branch duct 13, and the intake A circulation path is formed from the blower 7 to the ceiling duct 1 via the floor duct 5 and the connecting duct 9. In other words, the former route is a route in which air outside the vehicle passes through the clean filter 14 and is guided into the vehicle interior, and the latter route is a route in which air from the vehicle interior is sucked, passed through the evaporator 8, and guided back into the vehicle interior. . If this mode is adopted, air conditioning can be performed while cleaning.

The braking mechanism for each of the dampers described above can be a conventionally used wire tension control, and the braking signal for each damper can be extracted by using actuators on the motors of the suction floor 7 and the blower 15. It can be attached and carried by the actuator. Furthermore, it is also possible to easily add ion generators to appropriate locations in each of the ducts.

9 to 11 are diagrams showing other embodiments, in which only one branch duct is used, and this branch duct 12 is not provided with a cleaning filter 14. Along with this, the second to fourth dampers are also not provided.

In FIG. 9, the damper 16 is rotated to close the ceiling duct 1 and the connecting duct 9 that connect one of the pair of ceiling ducts 1.2 and the branch duct 12), the blower 15 When the air is driven, the air inside the vehicle is sucked into the ceiling duct l from the intake/exhaust grill 1a, and
2 and exhaust duct 11 to the outside of the vehicle (ventilation mode).

At this time, as shown in FIG.
The air is sucked into the interior, dehumidified and cooled, and returned to the passenger compartment through the intake/exhaust grill la (ventilation mode and air conditioner mode).

Further, as shown in FIG. 11, the damper 16 is rotated to close the branch duct 12 (ceiling duct 1 and connecting tact 9
A path is formed between the floor duct 5 and the suction/discharge blade la, and the evaporator 8 and the suction floor 7 are connected to each other.
When the air conditioner is activated, the air inside the vehicle is sucked into the floor duct 5, dehumidified and cooled, and returned to the vehicle interior through both intake and exhaust grilles la and 2a (air conditioner mode).

FIG. 12 is a diagram showing the A/C mode+cleaning mode. In this example, one branch duct is used as in the previous example, and the branch duct 13 is provided with a cleaning filter 14.

In FIG. 12, the damper 17 is rotated to close the ceiling duct 2 and the connecting duct lO that communicates one of the pair of ceiling ducts 1.2 with the branch duct 13), the blower 15 When the vehicle is driven, the air outside the vehicle passes through the clean filter 14 and is guided into the vehicle interior through the intake/exhaust grille 2a. At this time, if the A/C mode is selected at the same time, the air inside the vehicle is sucked into the floor duct 5 by the suction blower 7, passes through the mix door 25, etc., and the evaporator 8.
It is guided to the ceiling duct 1 via the connecting duct 9, and returns to the vehicle interior through the other intake/exhaust grill 1a. Also, blower 1
5) is stopped and the connection port of the branch duct 13 is closed using the tamper 17 as shown by the two-dot chain line, then only the A/C mode is performed.

In addition, in this specification, the temperature controller has been explained as the evaporator 8, but this temperature controller is not only a literal "evaporator" but also a general air conditioning mechanism, such as a "heat unit" or "evaporator and heat unit." It is used in a referring sense. Further, in the embodiment, the buttons 21 to 24 are provided on the instrument panel 20, but they may be provided in any other suitable manner, for example, on a side panel.

(Effects of the Invention) As explained above, according to the present invention, temperature control and ventilation can be performed with a single device, which not only makes it easier to secure space, but also reduces equipment costs, and eliminates cigarette smoke. The structure is such that the air is sucked in from the ceiling, and exhaust can be quickly and reliably carried out.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being a plan view and FIG.
The figure is a front view showing the same usage condition as above, Figure 3 is a front view of the instrument panel, Figure 4 is a plan view of A/C (air conditioner) mode, Figure 5 is a plan view of ventilation mode, Figure 6 is a plan view of the clean mode, FIG. 7 is a plan view of the (A/C ten clean) mode, and FIG. 8 is a plan view of the (A/C ten clean) mode.
Figures 9 to 11 are diagrams of other embodiments. Figure 9 is a plan view of the ventilation mode, Figure 1O is a plane view of the (A/C + ventilation) mode, and Figure 11 is a plan view of the A/C mode. A plan view, FIG. 12 is a plan view of the (A/C ten clean) mode. 1.2...Ceiling duct la, 2a...Suction/exhaust grill 5...Floor duct 7...Suction blower 8...
・Evaporator 9.10...Connection duct 11...
・Exhaust duct 12.13... Branch duct 14...
Clean filter 15...Blower 16...First damper 17...Second damper 18...Third damper 19...Fourth damper Patent applicant Diesel Kiki Co., Ltd. Agent Patent attorney Masaaki Mori Figure 1 Figure 2 Figure 3 Z+ ZU Nz 23
24-
NFigure 6Figure 9Figure 10Figure 11

Claims (1)

[Scope of Claims] A pair of ceiling ducts having suction and exhaust grilles, a floor duct having a temperature controller and a suction blower, and a connection connecting the base ends of each of the pair of ceiling ducts and the base end of the floor duct. a duct; an exhaust duct that carries out exhaust to the outside of the vehicle; a branch duct that connects at least one of the connection ducts and the exhaust duct; a blower disposed on the exhaust duct side of the branch duct; and the connection. Provided at a branch point between the duct and the branch duct,
An air conditioner for an automobile, comprising: a damper that selectively opens and closes between the one connecting duct and the floor duct or the branch duct.