JPS6311413A - Air conditioner for vehicle - Google Patents

Abstract

PURPOSE:To obtain the state keeping the head in cold and the feet in warm in the by-level mode by forming an outside air passage which bypasses a cold/ arm air mixing chamber between a blow-out air distribution chamber and a vent blow-out port and installing a by-level door in the outside air passage. CONSTITUTION:In the by-level mode, a wire 29 is pulled, and a prime mover lever 28 is turned counterclockwise around a supporting shaft 27. Since, at this time, a pin 30 at the other edge of the prime mover lever 28 only shifts in the cam groove 25 of the second door arm 22, a heating door 18 is kept in the state where a communication passage 15 is opened. Since, a rod 33 at one edge of the rime mover lever 28 turns a trailing lever 32, a cam groove 34 shifts a pin 26 counterclockwise, and turns a by-level door 20 through the third door arm 23 in the same direction, and an outside air passage 19 is opened. Therefore, the warm air is blown to a heated air blow-out port 17 and a defroster blow-out port 16 at the driver's feet, and the cold air is blown out from the second vent blow-out port 12.

Description

Detailed Description of the Invention (Industrial Application Field) This invention, for example, mixes hot air that has passed through a heater core and cold air from an air inlet in a mixing chamber, and transfers this mixed air to a vent outlet and a heat exchanger. The present invention relates to an air conditioner for an automobile that has branched discharge into an air outlet and an air outlet.

(Prior Art) Conventionally, as the above-mentioned example of an air conditioner for an automobile, there is, for example, a device described in Japanese Utility Model Application Publication No. 60-49008.

That is, it is equipped with an air mix door that distributes the cold air flowing into the heater case from the air intake into the heater core side passage and the cold air passage, and this air mix door is disposed in the distribution chamber, and the heater core and
Furthermore, the cold air from the cold air passage communicating with the above-mentioned distribution chamber,
This air conditioner is configured to mix warm air from a heater core outflow part in a mixing chamber, and branch and discharge this mixed air to a vent outlet and a heat outlet on the foot side.

However, in the above-mentioned conventional device, in the so-called bilevel mode in which air is blown out simultaneously from the vent outlet and the heat outlet, the air mixed in the above-mentioned mixing chamber is
There was a problem in that it was not possible to achieve a cold head and foot temperature because air was blown through the vent outlet and the heat outlet at the feet.

(Objective of the Invention) An object of the present invention is to provide an air conditioner for an automobile that can achieve a cold head and foot temperature in a bilevel mode.

(Structure of the Invention) The present invention provides an outside air passageway that bypasses the mixing chamber between the distribution chamber and the vent outlet, and this outside air passageway includes:
J' is characterized in that it is an air conditioner for an automobile equipped with a bi-level door connected to a mode lever so that the outside air passage can be heard only when the lever is in the bi-level mode.

(Effects of the Invention) According to the present invention, when the above-mentioned mode lever is operated to the bi-level position, the bi-level door provided in the outside air passage opens.

For this reason, one side of the air introduced into the distribution chamber from the air intake port is warmed through the heater core, and this warmed air mi is blown out to the foot-side heat outlet through the mixing chamber.

Further, the other part of the air introduced into the distribution chamber from the above-mentioned air intake port is blown out to the vent outlet via the above-mentioned outside air passage in a cold air state.

As a result, it is possible to achieve a cold head and foot temperature during the bilevel mode.

(Example) An embodiment of the present invention will be described in detail below based on the drawings.

The drawings show an air conditioner for an automobile. In FIGS. 1 and 2, a heater core 2 is disposed inside a heater case 1, and an engine cooling water inlet and a cooling water outlet are connected to this heater core 2. It is designed to heat cold air with engine cooling water heated to a target temperature of 80°C.

A distribution chamber 4 communicating with the air intake port 3 is provided on the upstream side of the heater core 2 described above, and in this distribution chamber 4, there is air for distributing the air into the heater core side passage 8, that is, the hot air passage and the cold air passage 5. A mix door 6 is installed.

The air mix door 6 is manually operated by a temperature control lever (not shown) provided on the instrument panel.

Further, while a mixing chamber 7 communicating with the above-mentioned cold air passage 5 is provided, a heater core 2 is arranged in a heater core side passage 8,
The above-mentioned interspace 7 is configured to mix the cold air from the cold air passage 5 and the warm air from the heater core side passage 8.

Furthermore, a vent passage 9 facing diagonally upward is connected to the downstream side of the aforementioned cold air passage 5J3 and mixing chamber 7, and a vent door 10 is disposed at the base end of this vent passage 9.

Then, both the first vent outlet 11 at the upper end of the vent passage 10 and the second vent outlet 12 adjacent to the first pen 1 to the outlet 11 are communicated with the center duct 13.
I'm here.

Furthermore, on the downstream side of the mixing chamber 7, a partition plate 14 is provided.
By providing a communication path 15 extending downward in the direction tJ, a defroster outlet 16 is formed in the upper part of this communication path 15, a heat outlet 17 is formed in the lower part, and each of these outlets 16. A heat door 18 is disposed between 17 and 17.

This heat door 18 and the aforementioned vent door 10 are manually operated by a mode lever (not shown) provided on the instrument panel. Incidentally, an outside air passage 19 dedicated to cold air that bypasses the mixing chamber 7 is provided between the above-mentioned distribution chamber 4 and the second vent outlet 12, and this outside air passage 19 is equipped with the above-mentioned mode lever (not shown). ) is provided with a bilevel door 20 that opens the outside air passage 19 only when the lever is in the bilevel mode (see FIGS. 5 and 6).

Next, the interlocking structure of the above-mentioned vent door 10, heat door 18, and bilevel door 20 will be described.

Each door shaft 10 of each door 10, 18, 20 mentioned above
A, 18a, and 20a are fitted with a first door arm 21, a second door arm 22, and a third door arm 23, respectively.

Then, the cam rf124.25 is drilled into the first door arm 21 and the second door arm 22, and
A bin 26 is provided protruding from the free end of the third door arm 23.

Near the second door arm 22 mentioned above, a supporting shaft 27 protruding from the heater case 1 is pivotally attached! A driving lever 28 is provided, and one end of this driving lever 28 is connected to the tip of a seven-vinyl control wire 29 connected to the mode lever described above, and a bottle 30 is provided protruding from the other end of the driving lever 28. It is inserted into the cam groove 25 of the second door arm 22 mentioned above.

In addition, the intermediate 4 between the first door arm 21 and the third door arm 23 (IH has a support shaft 3 protruding from the heater case 1).
A driven lever 32 is provided which is pivotally connected to the driven lever 3.
A rod 33 is stretched between one end of the drive lever 28 and one end of the driving lever 28 described above.

Furthermore, a cam groove 34 bored at one end of the above-mentioned driven lever 32
While inserting the bin 26 of the third door arm 23 into the
A pin 35 protruding from the other end of the driven lever 32 is inserted into the cam groove 24 of the first door arm 21.

Then, the vent door 10. The heat door 18 and the bilevel door 20 are placed in the defroster position shown in FIGS.
The heat position shown in FIGS. 5 and 4, the pie level position shown in FIGS. 5 and 6, and the combined vent position shown in FIGS. 7 and 8 can be operated in conjunction with each other.

The illustrated embodiment is constructed as described above, and its operation will be explained below.

First, under the defroster mode state shown in FIGS. 1 and 2, one side of the cold air that is distributed from the air intake port 3 by the air mix door 6 and flows into the distribution chamber 4 flows into the heater core side passage 8 and reaches the heater core 2. The UJ41, which exchanges heat with the engine cooling water at approximately 80°C and becomes warm air, flows out from the outlet (not shown) of the heater core 2, and is mixed with the other cold air flowing in from the cold air passage 5 in the mixing chamber and blown. The air is blown out from the outlet 16 to both sides of the windshield to prevent the windshield from fogging.

In addition, in this defroster mode, the air mix door 6 is moved in the direction of the imaginary line α in FIG. It is desirable to rotate it.

When the mode lever on the instrument panel I is operated from the differential mode shown in FIGS. 1 and 2 to the heat position, the seventh control wire 29 is
As a result, the drive lever 28 rotates counterclockwise about the support shaft 27, resulting in the state shown in FIG. 3.

That is, due to the rotation of the driving lever 28 described above, the bin 30 at the other end of the lever 28 rotates the second door arm 22 by i1 times in the twisting direction via the cam groove 25, and the heat door 18
Open J゛ru.

Further, the driven lever 32 is rotated counterclockwise about the support shaft 31 by the rod 33 at one end of the driving lever 28 .

Therefore, both ends of the driven lever 32 move in an arc, but the cam groove 34 at one end of the lever 32 only rotates in an arc around the support shaft 31.
The rocking force for 6 is not applied. Also, the driven lever 32
The pin 35 at the other end only moves along the arc of the cam groove 24 of the first door arm 21, and the pin 35 does not apply any rocking force to the first door arm 21.

As a result, in the heat mode, as shown in FIGS. 3 and 4, only the heat door 18 opens and the vent door 10 opens.
The bilevel door 20 then closes the vent passage 9 and the outside air passage 19, respectively.

Therefore, under this heat mode state, the cold air flowing into the distribution chamber 4 from the air intake port 3 is warmed by the heater core 2 and becomes warm air, and the warm air flowing out from the outlet of the heater core 2 is transferred to the heater core side passage 8. The air is blown out from the heat outlet 17 and the defroster outlet 16 through the mixing chamber 7 and communication path 15 to the foot area and both sides of the windshield for heating and to prevent the windshield from fogging.

When the mode lever described above is operated from the heat mode shown in FIGS. 3 and 4 to the pie level position, the mode control wire A729 is further pulled, resulting in the state shown in FIGS. 5 and 6.

That is, by rotating the drive lever 28, the lever 28
Although the bin 30 at the other end rotates, the bin 30 simply moves within the groove 25 of the second door arm 220, and the heat door 18 is held in a state in which the communication path 15 is open.

Further, as the driving lever 28 rotates, the rod 33 at one end of the lever 28 rotates the driven lever 32, and the cam groove 34 connected to the driven lever 32 rotates the third door arm 32.
The bin 26 at the third free end is operated counterclockwise, the bilevel door 20 is rotated in the same direction via the third door arm 23, and the outside air passage 19 is opened.

Incidentally, the pin 35 at the other end of the drive lever 28 also rotates counterclockwise, but this pin 35 only moves along the circular arc portion that corresponds to the cam groove 24 of the first door arm 21.
Therefore, there is no influence of the swinging force on the first door arm 21.

As a result, in bi-level mode, Figs.
As shown in the figure, the heat door 18 and the bilevel door 2
0 is open, and the vent door 10 is in a closed state.

Therefore, under this bilevel mode state, one side of the air introduced into the distribution chamber 4 from the air intake port 3 is heated via the heater core 2, and this warmed air is transferred from the above-mentioned outflow part of the heater core 2 to the heater core side. The heat is blown out through the passage 8, the mixing chamber 7, and the communication passage 15 to the heat outlet 17 and the defroster outlet 16 on the foot side.

Further, part of the other air introduced into the distribution chamber 4 from the air intake port 3 described above is transferred to the second vent outlet 1 through the outside air passage 19 that bypasses the mixing chamber 7 described above while remaining in a cold air state.
2, and is smoothly blown out from the second vent Suita mouth 12 through the center duct 13 (see FIG. 1).

Therefore, in the bilevel mode, it is possible to achieve a cold head and foot temperature.

Note that the remaining part of the other blown air introduced into the distribution chamber 4 from the air intake port 3 flows into the mixing chamber 7 and mixes with ill that has passed through the heater core side passage 8.

When the mode lever described above is operated from the 1 bilevel mode shown in FIGS. 5 and 6 to the vent position, the mode control wire 1729 is further pulled, resulting in the state shown in FIGS. 7 and 8.

That is, by rotating the primitive lever 28, the same lever 28
Although the bin 30 at the other end rotates, the bin 30 simply moves within the cam groove 25 of the second door arm 22, and the heat door 18 is held in a state in which the communication path 15 is open.

Further, as the drive lever 2B rotates, the rod 33 at one end of the lever 28 rotates the driven lever 32, and the cam groove 34 in the driven lever 32 rotates the bin 26 at the free end of the third door arm 23. The third door arm 23 is operated in the clockwise direction to rotate the bilevel door 20 in the same direction, thereby closing the outside air passage 19.

Furthermore, the first door arm 21 is operated in the direction J1 using the pin 35 at the other end of the driven lever 32, and the vent door 10 is opened.
(2) At the same time, the door 10 closes the entrance of the communication path 15.

As a result, in the vent mode, as shown in FIGS. 7 and 8, the vent door 10 and the heat door 18 are open, and the bilevel door 20 is closed.

Therefore, in this vent mode state, one side of the air introduced into the distribution chamber 4 from the air intake port 3 is heated via the heater core 2, and this warmed air is passed from the outlet of the heater core 2 to the heater core side passage. 8 to the mixing chamber 7.

Further, the other part of the air introduced into the distribution chamber 4 from the above-mentioned air intake port 3 reaches the above-mentioned mixing chamber 7 via the cold air passage 5 while remaining in a cold air state.

Then, the mixed air in which hot air and cold air are mixed in this mixing chamber 7 is smoothly blown out through the vent passage 9, the first vent outlet 11, and the center duct 13. In this case as well, the temperature of the mixed air can be arbitrarily controlled by operating the air mix door 6 by operating a temperature control lever (not shown) provided on the instrument panel.

In summary, we have provided a bilevel door 20 that is connected to the mode lever and opens the outside air passage 19 only when this mode lever is in the pie level shade mode, so that when the pie level is set to seven, the J3 will be cold. There is an effective method that can achieve foot warmth.

In the correspondence between the configuration of the present invention and the embodiment described above, pen 1 to outlet 1 of this invention correspond to the first vent outlet 11 and the second pen 1 to outlet 12 of the embodiment. However,
This invention is not limited to the configuration of the above-described embodiment.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the defroster mode of an air conditioner for an automobile; FIG. 2 is a sectional view of the defroster mode; FIG. 3 is a side view of the heat mode; is a sectional view of heat mode, Fig. 5 is a side view of bilevel mode, Fig. 6 is a sectional view of bilevel mode, Fig. 7 is a side view of vent mode, and Fig. 8 is a sectional view of vent mode. . 2... Heater core 4... Distribution chamber 5... Cold air passage 6... Air mix door 7... Mixing chamber 11... First vent outlet 12... Second vent outlet 17. ...Heat outlet 19...Outside air passage 20.
・Bi-level door

Claims (1)

[Claims] 1. An air mix door is installed in the distribution chamber that distributes air between the heater core side passage where the heater core is installed and the cold air passage, and the cold air from the cold air passage communicating with the distribution chamber and the warm air flowing out of the heater core are mixed in the mixing room. An air conditioner for an automobile that branches out air into at least a vent outlet and a heat outlet, wherein an outside air passage bypassing the mixing chamber is provided between the distribution chamber and the vent outlet, and the outside air passage bypasses the mixing chamber. An air conditioner for an automobile includes a bilevel door that is connected to a mode lever and opens an outside air passage only when the lever is in the bilevel mode.