JPH0713521U - Blowout mode switching device for vehicle air conditioner - Google Patents

Abstract

(57) [Summary] [Objective] Even in a vehicle air-conditioning system having two shunt channels capable of independent temperature control in the ventilation passage, the opening / closing damper for opening / closing the communication passage provided between the shunt channels is eliminated. In addition, the number of parts is reduced, the manufacturing cost is reduced, and the drive mechanism of the blowout mode switching device is simplified. [Constitution] The vent damper 36 is axially supported at substantially the center of the vent outlet passage 31, and is connected to the vent outlet passage 31 and the communication passage 20.
The defrost damper 32 pivots at a branch point between the defrost outlet passage 29 and the vent outlet passage 31 and rotates so as not to interfere with the vent damper 36, and the defrost outlet passage 29 and the vent outlet passage 31 are selectively closed. The upper side of 31 is selectively closed. The foot damper 40 is pivotally supported at the branch point of the foot blow passage 30 and the vent blow passage 31 and rotates so as not to interfere with the vent damper 36, and selectively closes the foot blow passage 30 and the lower side of the vent blow passage 31. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for switching a blowout mode, and more particularly to a device used for a vehicle air conditioner of a type in which an air passage is divided into upper and lower shunts and independent temperature control is possible in each shunt.

[0002]

[Prior art]

 As a conventional vehicle air conditioner, the ventilation passage on the downstream side of the evaporator is divided into a first branch passage and a second branch passage by a partition plate, and intake air can be independently temperature-controlled in each branch passage. A temperature adjusting means such as a damper is provided, the first branch flow passage is connected to the vent blowout passage and the defrost blowout passage, the second branch flow passage is connected to the foot blowout passage, and the partition plate communicates both the branch flow passages. It is known that a passage is provided and the communication passage can be opened and closed by an opening / closing damper (see Japanese Utility Model Laid-Open No. 63-154309).

According to such a vehicle air conditioner, the bi-level mode and the differential heat mode can be formed by closing the communication passage with the opening / closing damper and controlling the temperature of each branch flow channel separately. By opening the communication passage, it is possible to support modes other than the bilevel mode and the differential heat mode.

[0004]

[Problems to be solved by the device]

 However, in the vehicle air conditioner of the above-mentioned reference, it is necessary to newly install an opening / closing damper in the communication passage and install a drive mechanism thereof. As a result, the number of parts is increased and the manufacturing cost of the vehicle air conditioner as a whole is increased. Further, since it is necessary to separately install a drive mechanism for the opening / closing damper, there is also a disadvantage that the drive mechanism of the blowout mode switching device becomes complicated.

In view of the above-mentioned problems, the present invention has been made in view of the above problems, and even in a vehicle air conditioner having a temperature adjusting means for independently adjusting the temperature of the intake air in each branch channel, a communication passage provided between the branch channels. By eliminating the opening / closing damper for opening and closing the air conditioner, the manufacturing cost of the vehicle air conditioner is reduced due to the reduction in the number of parts, and the drive device of the air blow mode switching device is simplified. An object is to provide a switching device.

[0006]

[Means for Solving the Problems]

 Therefore, the gist of the present invention is that it is provided in a vehicle air-conditioning system in which the ventilation passage is divided into two shunts by a partition plate that can control the temperature independently, and one of the two shunts is provided. There is a defrost blowout passage to be connected, a foot blowout passage that is connected to the other of the two branch passages, and a vent blowout passage that is connected to both of the two branch passages, and the one branch passage and the other branch passage. A communication passage communicating with the branch flow passage is provided in the partition plate, and a vent damper pivotally supported substantially at the center of the vent discharge passage to selectively block the vent discharge passage and the communication passage, and the defrost discharge passage. And a vent outlet passage are pivotally supported at a branch point between the vent damper and the vent outlet passage so as not to interfere with the vent damper, and the defrost outlet passage and the vent outlet passage on the defrost outlet passage side of the vent damper spindle. The defrost damper that selectively closes and the branch point between the foot blowout passage and the vent blowout passage are pivotally supported and rotate so as not to interfere with the vent damper, and the foot blowout passage and the support shaft of the vent damper blow out the foot blowout passage. It is provided with a foot damper that selectively closes the vent vent passage on the passage side.

[0007]

[Action]

 Therefore, if the defrost blowout passage is closed with the defrost damper, the foot blowout passage is closed with the foot damper, and the communication passage is closed with the vent damper, both of the two branch passages are opened only to the vent blowout passage. Vent mode is entered. In addition, if the defrost damper blocks the defrost outlet passage, the foot damper blocks the foot outlet passage side of the vent outlet passage, and the vent damper blocks the communication passage, one branch passage is opened to the vent outlet passage. Since the foot outlet passage is opened in the shunt channel, the bi-level mode is set. Furthermore, if the defrost damper closes the defrost outlet passage, the vent damper closes the entire vent outlet passage, and the foot damper closes the foot outlet passage side of the vent outlet passage, the two branch passages communicate with each other. However, both are open to the foot outlet passage, so the heat mode is set. Furthermore, if the defrost damper closes the defrost outlet passage side of the vent outlet passage, the vent damper closes the communication passage, and the foot damper closes the foot outlet passage side of the vent outlet passage, one of the branch passages is defrost outlet passage. The foot outlet passage is opened in the other branch channel, and the differential heat mode is set. If the defrost damper closes the defrost outlet passage side of the vent outlet passage, the vent damper closes the entire vent outlet passage, and the foot damper closes the foot outlet passage, the two branch passages communicate with each other through the communication passage. However, both are open to the defrost outlet passage, so the defrost mode is set. Therefore, the vent damper also serves as an opening / closing damper that opens / closes the communication passage, so that the above-mentioned problems can be achieved.

[0008]

【Example】

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

1 to 6, a vehicle air conditioner 1 is provided with an inside / outside air switching device, a blower, and an evaporator (not shown) on an upstream side of an air conditioning duct, and a mix damper 11, a downstream side of the evaporator. 13, the heater core 10, and the submix dampers 15 and 17 are provided, and the dampers 32, 36 and 40 for switching the blowing mode are arranged at the most downstream portion of the air conditioning duct.

In this vehicle air conditioner 1, the ventilation passage 3 is divided into an upper sub-channel 6 and a lower sub-channel 7 by a partition plate 5 on the downstream side of the evaporator, and the respective sub-channels 6, 7 are provided. In addition, air appropriately cooled by the evaporator is sucked in.

Each of the branch channels 6 and 7 has a warm air passage 20 in which a heater core 10 that heats the cooling air by using the heat of a running engine is arranged, and a cold air passage 21 that bypasses the heater core 10. Further, the heater core 10 is a common one disposed over both layers between the branch channels 6 and 7. The heater core 10 may be arranged separately for each of the branch channels 6 and 7.

The mix dampers 11 and 13 are rotatably installed independently on the upstream side of the heater core 10 for each of the flow dividing paths 6 and 7, and the opening degrees of the air mix dampers 11 and 13 are adjusted. By adjusting the ratio, the ratio of the air flowing into the warm air passage 20 to the air flowing into the cold air passage 21 is controlled.

Further, the submix dampers 15 and 17 are independently rotatably arranged for each of the branch channels 6 on the downstream side of the heater core 10, and pass through the hot air passage 20 to be separated by the heater core 10. The ratio of the heated air mixed with the air passing through the cold air passage 21 is controlled.

A defrost outlet passage 29, which is connected to a defrost outlet that faces the front glass in the vehicle compartment, is directly connected to the upper portion of the shunt 6 downstream of the submix damper 15 in the shunt 6. A foot outlet passage 30 connected to a foot outlet opening near the foot of an occupant in the passenger compartment is directly connected to the lower side of the branch flow passage 7 on the downstream side of the submix damper 17 of the passenger compartment. A vent outlet passage 31 connected to a vent outlet opening toward the upper half of the body is connected to the rear of both branch passages 6 and 7.

By the way, the partition plate 5 extends toward the center of the vent outlet passage 31, but its tip side is notched, and the shunt channel 6 is provided between the partition plate 5 and the support shaft 38 of the vent damper 36. A communication passage 20 that connects the branch flow path 7 and the branch flow path 7 is formed.

The defrost damper 32 is a butterfly type one in which a support shaft 34 is provided substantially at the center of the damper body 33, and the damper body 33 is composed of two damper body constituent parts 33a and 33b with the support shaft 34 as a boundary. Then, the support shaft 34 is pivotally supported at a portion where the defrost blow-out passage 29 and the vent blow-out passage 31 are separated, and the damper position shown by a solid line in FIG. From the position where 29 is closed) to the damper position indicated by the two-dot chain line (in the other damper main body constituent part 33b of the damper body 33, the upper half of the vent outlet passage 31, that is, from the spindle 38 of the vent damper 36 to the defrost outlet passage 29. It can be rotated to a position where the side is closed).

Like the defrost damper 32, the vent damper 36 is provided with a support shaft 38 substantially at the center of the damper body 37, and the damper body 37 is composed of two damper body constituent portions 37a and 37b with the support shaft 38 as a boundary. In the butterfly type, the support shaft 38 is pivotally supported in the center of the vent outlet passage 31 located on the extension of the partition plate 5, and the damper position (the damper body 37 is shown in the solid line in FIG. It can be rotated from a horizontal position) to a damper position indicated by a chain double-dashed line (a position where the vent body 31 closes the vent outlet passage 31).

Here, the distance between the partition plate 5 and the support shaft 38 of the vent damper 36 is substantially equal to or slightly larger than the length from the support shaft 38 to the tip of one of the damper body constituent parts 37a. The non-existing portion of the partition plate 5 forms a communication passage 20 that connects the shunt channel 6 and the shunt channel 7. Further, in the vent damper 37, one damper main body constituting portion 37a rotates in the space between the communication hole 20 and the defrost blowing passage 29, and the other damper main body constituting portion 37b can rotate in the vent blowing passage 31. It is like this.

Further, the foot damper 40 is provided with a support shaft 42 on one side of the damper main body 41, and the support shaft 42 is pivotally supported at a portion where the foot outlet passage 39 and the vent outlet passage 31 are separated. The main body 41 rotates in the space between the communication passage 20 and the foot outlet passage 30, and is indicated by a two-dot chain line from the damper position (the position where the damper main body 41 closes the foot outlet passage 30) shown by the solid line in FIG. The damper can be rotated to the damper position (the lower half of the vent outlet passage 31 of the damper body 41, that is, the position where the foot outlet passage 30 side is closed from the support shaft 38 of the vent damper 36).

However, since each of the dampers 32, 36, 40 has the above-described rotation range, the dampers do not interfere with each other to hinder the rotation.

In the above configuration, the damper control in each blowout mode will be described. First, when the blowout mode is set to the vent mode, as shown in FIG. 1, one of the damper main body constituent parts 33a of the defrost damper 32 is used. In addition to closing the defrost outlet passage 29, the foot outlet passage 30 is closed by the damper body 41 of the foot damper 40, and the damper body 37 of the vent damper 36 is horizontal, and the communication passage 20 is closed by one damper body constituting portion 37a. .

As a result, both the upper shunt channel 6 and the lower shunt channel 7 are opened only to the vent blowing passage 31, so that the air whose temperature is controlled in both the shunting passages 6 and 7 is discharged into the vent blowing passage 31. After being blown to the air blower 31, the vent damper 36 joins on the downstream side, and then is blown into the vehicle compartment only from the vent outlet.

Next, when the blowout mode is set to the bi-level mode, as shown in FIG. 3, the defrost blowout passage 29 is closed by one of the damper main body constituent parts 33a of the defrost damper 32, and the damper of the foot damper 40 is closed. The lower half of the vent outlet passage 31 is closed by the main body 41, the damper main body 37 of the vent damper 36 is made horizontal, and the communication passage 20 is closed by one damper main body constituent portion 37a. In order to shift from the vent mode to the bi-level mode, the foot damper 40 may be rotated from the position where the foot blow passage 30 is closed to the position where the lower half of the vent blow passage 31 is closed.

As a result, the shunt channel 6 is opened to the vent outlet passage 31, and the shunt passage 7 is opened to the foot outlet passage 30, so that the air whose temperature is controlled in the shunt passage 6 passes through the vent outlet passage 31. As a result, the air blown out from the vent outlet 31 into the vehicle compartment, and the air whose temperature is controlled in the branch passage 7 is blown out into the vehicle compartment from the foot outlet 30 via the foot outlet passage 30. Moreover, since the temperature of the air blown out from the vent outlet 31 and the temperature of the air blown out from the foot outlet 30 can be separately and independently controlled, fine temperature control can be performed.

When the blowout mode is set to the heat mode, as shown in FIG. 4, the defrost blowout passage 29 is closed by one of the damper body constituent parts 33a of the defrost damper 32, and the vent blower 36 causes the vent blowout passage 31 to be closed. And the foot damper 40 is rotated to a position where the lower half of the vent outlet passage 31 is closed. In addition, in order to shift from the bi-level mode to the heat mode, the vent damper 36 may be rotated to a position where the vent outlet passage 30 is closed.

As a result, the shunt 6 is opened through the communication passage 20 and the shunt 7 is opened directly to the foot outlet passage 30, so that the air whose temperature is controlled in the shunt 6 is separated through the communication passage 20. It merges with the air whose temperature is controlled in the flow path 7, and is blown into the vehicle compartment through the foot blow passage 30 only from the foot blow outlet.

When the blowout mode is set to the differential heat mode, as shown in FIG. 5, the defrost damper 32 is set up, and one upper part of the vent blowout passage 31 is closed by one damper body constituting portion 33b of the defrost damper 32. At the same time, the damper main body 37 of the vent damper 36 is made horizontal, and the communication passage 20 is closed by one damper main body constituting portion 37a, and further, the lower half of the vent outlet passage 31 is closed by the damper main body 41 of the foot damper 40. In order to shift from the heat mode to the diff heat mode, the vent damper 36 is rotated counterclockwise in the drawing from the position shown in FIG. 5 to be horizontal, and at the same time the defrost damper 32 is moved from the position shown in FIG. Rotate clockwise to stand.

As a result, the branch flow channel 6 is opened to the defrost blow-out passage 29, and the branch flow passage 7 is opened to the foot blow-out passage 30. Therefore, the temperature-controlled air in the branch flow passage 6 passes through the defrost blow-out passage 29. The air supplied from the defrost outlet to the window glass in the vehicle compartment and temperature-controlled in the branch passage 7 can be blown into the vehicle compartment from the foot outlet via the foot outlet passage 30. Moreover, since independent air conditioning is performed for each of the branch channels 6 and 7, it is possible to perform control such as blowing out warm air from the foot outlet while blowing out dry air from the defrost outlet.

Further, when the blowout mode is set to the defrost mode, as shown in FIG. 6, the vent blower passage 36 is closed by the vent damper 36 and the damper body 41 of the foot damper 40 is used to close the foot blowout passage 30. Then, the defrost damper 32 is rotated to a position where the upper half of the vent blowing passage 31 is closed by one of the damper body constituent parts 33b of the defrost damper 32.

As a result, both the shunt channel 6 and the shunt channel 7 are opened to the defrost blow-out passage 29 directly and through the communication hole, so that the air whose temperature is controlled in the shunt passage 7 passes through the communication passage 20. Thus, the air is combined with the temperature-controlled air in the branch flow passage 6, and is blown out into the vehicle compartment only from the defrost outlet through the defrost outlet passage 29.

[0031]

[Effect of device]

 As described above, according to the present invention, the vent damper opens and closes the communication passage that connects the one branch passage and the other branch passage, so that it is necessary to provide a special opening and closing damper to open and close the communication passage. In addition, the number of parts can be reduced, which can reduce the manufacturing cost of the vehicle air conditioning device as a whole.

Further, since the opening / closing damper for opening / closing the communication passage is not required, a driving device for operating the opening / closing damper is also unnecessary, and the entire driving device of the blowout mode switching device can be simplified.

[Brief description of drawings]

FIG. 1 is an explanatory view showing the position of each damper in a vent mode of a blowout mode switching device of an air conditioning control device according to the present invention.

FIG. 2 is a schematic configuration diagram showing a structure on the downstream side of the air mix damper of the air conditioning control device.

FIG. 3 is an explanatory view showing positions of respective dampers in a bi-level mode of the blowout mode switching device of the above.

FIG. 4 is an explanatory diagram showing positions of respective dampers in a heat mode of the blowout mode switching device.

FIG. 5 is an explanatory view showing the position of each damper in the differential heat mode of the blowout mode switching device.

FIG. 6 is an explanatory view showing the position of each damper in the defrost mode of the blowout mode switching device of the above.

[Explanation of symbols]

 1 Air Conditioner for Vehicle 3 Ventilation Channel 5 Partition Plate 6 Dividing Channel in Upper Layer 7 Dividing Channel in Lower Layer 20 Communication Passage 29 Defrost Blowing Passage 30 Foot Blowing Passage 31 Vent Blowing Passage 32 Defrost Damper 36 Vent Damper 38 Spindle 40 Foot Damper

Claims (1)

[Scope of utility model registration request] 1. A ventilation passage having a partition plate capable of independently controlling temperature.
It is installed in the vehicle air conditioner that is divided into two branch channels.
A defrost outlet passage connected to one of the two branch passages, a foot outlet passage connected to the other of the two branch passages, and a vent outlet passage connected to both of the two branch passages, A communication passage that connects the one branch flow passage and the other branch flow passage is provided in the partition plate, and is pivotally supported at substantially the center of the vent blow passage to selectively close the vent blow passage and the communication passage. The vent blower is pivotally supported at a branch point between the defrost blow-out passage and the vent blow-out passage and pivots so as not to interfere with the vent damper, and the vent blow-out on the defrost blow-out passage side from the defrost blow-out passage and the support shaft of the vent damper. A defrost damper that selectively closes the passage and a pivot that is pivotally supported at the branch point between the foot outlet passage and the vent outlet passage so as not to interfere with the vent damper. , The blow mode switching device of a vehicle air-conditioning system, characterized in that and a foot damper for selectively closing the said vent outlet passages of the foot outlet passages and the foot outlet passage side of the supporting shaft of the vent damper.