JPH0796365B2 - Vehicle air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a vehicle air conditioner, and can be used particularly as an air conditioner for an automobile.

[Conventional technology]

FIG. 12 shows a cross section of a conventional vehicle air conditioner. Cold air sucked by a blower (not shown) or the like is introduced into the case 901 through a cold air inlet 905 formed in the case 901. The amount of the introduced cool air is distributed between the heater 906 side and the discharge port side by the first damper 907.
The discharge ports are a defrost discharge port 902 for guiding air to the window glass of the automobile, an upper discharge port 903 for guiding air to the head or chest of the occupant, and a lower discharge port 904 for guiding air to the foot side of the occupant. Consists of. Defrost discharge port 902 is the second damper
The upper discharge port 903 and the lower discharge port 904 are opened / closed by the third damper 909.

The cold air introduced from the cold air inlet 905 is the arrow (a) in Fig. 12.
Is divided into the cold air shown by and the cold air shown by the arrow (b).
The cold air indicated by the arrow (B) passes through the heater 906, and at that time, heat is exchanged and the temperature is raised. The heated hot air flows through the hot air passage 910 as indicated by arrows (c) and (d). Then, it mixes with the cold air shown by the arrow (a) distributed from the cold air outlet 905 to the discharge port side. This mixed air (hereinafter referred to as temperature-controlled air) is discharged from the discharge port that is open.

A conventional air conditioner as shown in FIG. 12 is, for example, Japanese Utility Model Publication No. 58-19044.

[Problems to be solved by the invention]

However, in the conventional air conditioner as described above, the cold air guided through the cold air suction port 905 and the warm air that has passed through the heater 906 are mixed so as to be close to each other from both sides. Therefore, for example, as shown in FIG. 12, the second damper 90
8 opens the defroster outlet 902 and also the lower outlet 904
Is also in the open position, and the third damper closes the upper discharge port 903, the cold air and the warm air to be mixed cannot be mixed well, and the defrost discharge port
There is a problem that most of the temperature-controlled air discharged from 902 becomes cold air, and most of the air discharged from the lower discharge port 904 becomes warm air. Therefore, cooler air is discharged from the defrost discharge port 902 toward the occupant's head side, and the excessively heated warm air is discharged from the lower discharge port 904 to the occupant's feet, which is very uncomfortable for the occupant. There was a problem of becoming a cause.

[Means for solving problems]

The present invention has an object to improve the mixing property of cold air and warm air in view of the conventional problems described above. To achieve this object, according to the present invention, a case that forms a predetermined space therein, a cold air blowing port that is opened in the case to guide cool air into the case, and a vehicle of the vehicle from the inside of the case are provided. In order to discharge the wind set at an arbitrary temperature toward the room, a plurality of temperature control air outlets opened in the case, and in order to heat the cold air sucked from the cold air inlet, the inside of the case A heat exchanger housed in the heat exchanger, a damper that distributes cold air from the cold air suction port to the temperature control air outlet direction and the heat exchanger direction, and a temperature that has been raised through the heat exchanger. A hot air passage for guiding wind to the temperature control air discharge side, wherein the hot air passage is branched on the wind outlet side of the heat exchanger,
A first warm air passage and a second warm air passage are formed so as to extend toward both sides of the heat exchanger and the cold air blowing port and both sides of the damper toward the temperature control air outlet side. The hot air passing through the first warm air passage and the second warm air passage is configured to join together so as to sandwich the cool air distributed in the direction of the temperature-controlled air outlet from the cold air inlet. Adopt technical means.

〔The invention's effect〕

As described above, in the present invention, the warm air heated by the heat exchanger to cool the cool air sucked in through the cool air suction port passes through the first passage and the second passage and is joined so as to be sandwiched from both sides. Therefore, it is possible to greatly improve the mixing property, as compared with the case where the cold air and the warm air are joined together by leaning from both sides as in the conventional case. Therefore, the temperature-controlled air discharged from each discharge port is always mixed and discharged at an appropriate temperature, and comfortable air conditioning for the occupant can be performed.

〔Example〕

FIG. 2 is a sectional view of the air conditioner. Blower unit 200
Stores the blower 203 in the blower case 201.
203 is rotated by an electric motor 204. An outside air introduction duct 208 and an inside air introduction duct 210 are connected to the blower case 201.

The outside air introduction duct 208 forms an outside air introduction passage 207 for guiding the air outside the vehicle to the blower 203 side as shown by an arrow A in the figure, and the inside air introduction duct 210 indicates the air inside the vehicle in the figure. As shown by B, an inside air introduction path 209 for introducing the blower 203 is formed.

An inside / outside air switching damper 205 is arranged at a connecting portion between both ducts 208, 210 and the blower case 201. The inside / outside air switching damper 205 is rotatable about a shaft 206,
From the state where the outside air introducing passage 207 is closed, it is possible to rotate to a position where the inside air introducing passage 209 is closed as shown by a two-dot chain line in the figure. An evaporator 211 of a vehicle air conditioner is installed in the middle of the inside air introduction path 209.

The blower unit 200 sucks cool air from the outside air introduction path 207 or the inside air introduction path 209 by rotating the blower 203, and the sucked cold air is heated by the heater unit 100.
It is sending out to the side. The case 108 forming the outer shape of the heater unit 100 is provided with a cold air inlet 101, and the blower case 201 described above is joined to the cold air inlet 101. Cold air is introduced into the case 108 through the cold air suction port 101.

FIG. 1 is a sectional view taken along line I-I of FIG. The internal structure of the heater unit 100 will be described with reference to FIG. On the side wall of the case 108, the cold air suction port 101 described above is opened at substantially the center thereof. A first damper 102 is arranged at a position facing the cold air suction port 101. This damper 1
Reference numeral 02 denotes a plate-shaped member extending in the direction perpendicular to the paper surface of FIG. The first damper 102 is centered on the rotary shaft 104, and extends from the position shown by the solid line in FIG. 1 to the two-dot chain line 102a in FIG.
It is freely rotatable to the position shown by.

A heat exchanger 106 for heating the cold air sucked from the cold air suction port 101 is arranged below the cold air suction port 101 in the figure. The heat exchanger 106 is a conventionally known heater that uses cooling water for an automobile engine.

The first partition wall 12 is provided on both sides of the first damper 102 and the heat exchanger 106.
0 and the second partition wall 122 are formed. First partition wall
120 is a straight part 120a that is closely attached to the side of the heat exchanger 106.
And an arcuate portion 120b along an arc drawn when the tip of the first damper 102 rotates. The linear portion 120a and the heater 106 are in close contact with each other so that air does not leak between them, and the arcuate portion 120b and the tip of the first damper 102 are both in contact with each other regardless of the turning position of the tip. They are placed close to each other so that air does not leak between them. By the first partition wall 120 and the case 108, the first
A warm air passage 150 is formed, and the warm air heated up through the heat exchanger 109 passes through the first warm air passage 150 as indicated by an arrow S.

The second partition wall 122 is also closely attached to the side of the heat exchanger 106,
The heat exchanger 106 is formed from the side to the rotating shaft 104. A second warm air passage 152 is formed by the second partition wall 122 and the case 108. The warm air whose temperature has been raised by passing through the heat exchanger 106 also flows into the second warm air passage 152 as indicated by an arrow R in the figure.

The first partition wall 120 and the second partition wall 122 have a first damper.
Stopper portions 124 and 126 are formed so that the rotation stop of the cold air suction opening 101 at the position where all of the cold air suction opening 101 is opened to the heater 106 side. Similarly, the first damper 102 is the cold air suction port 101.
The stopper portions 128 and 130 are formed so as to stop the rotation in a state in which all of them are opened toward respective discharge ports described later.

The case 108 has a defroster outlet 11 which is a temperature control air outlet.
4, the upper discharge port 116 and the lower discharge port 118 are opened. The defrost discharge port 114 is for discharging the air whose temperature is adjusted in the case 108 toward the window glass of the vehicle, and the defrost discharge port 114 has a duct (not shown) extending toward the window glass. Are connected. The upper discharge port 116 is also for guiding the temperature-controlled air in the case 108 to the head and chest of the occupant,
A duct not shown is also connected to the upper discharge port 116. Further, the lower discharge port 118 is also for discharging the temperature-controlled air (mainly warm air) in the case 108 toward the foot side of the occupant.

A second damper 110 is arranged at the front of the defrost discharge port 114. The second damper 110 is rotatable about the rotary shaft 146, and contacts the stopper portion 132 formed on the case 108 to close the defrost discharge port 114, and then the second damper 110 is also formed on the case 108. The rotational position can be arbitrarily set up to a position where the upper discharge port 116 and the lower discharge port 118 are closed by engaging with the portion 136.

Further, a third damper 112 is arranged on the front surface of the upper discharge port 116. The third damper 112 is rotatable about a rotation shaft 148, contacts the edge portion 142 of the upper discharge port 116, and closes the upper discharge port 116. The rotation position can be freely set up to the position where the lower discharge port 118 is closed by abutting against.

The cold air (shown by the arrow P in the figure) distributed from the cold air suction port 101 to each discharge side and the first warm air passage 150 and the second warm air passage 152 flow as shown by the arrows S and R. The warm air is mixed at the mixing position indicated by the symbol M of the case 108.

Air mixed in this way (temperature-controlled air)
Is discharged from the defrost discharge port 114 as indicated by arrow C according to the rotational positions of the second damper 110 and the third damper 112, and from the lower discharge port 118 at the upper discharge port 116 as indicated by arrow D. Is discharged as shown by arrow E.

It should be noted that, of the cold air sucked from the cold air suction port 101, the amount of cold air distributed to each discharge port side and the amount of cold air distributed to the heat exchanger 106 side are determined by the rotational position of the first damper 102. In this embodiment, as indicated by the solid line in FIG. 1, the rotating position of the first damper 102 that allows all the cool air sucked through the cool air suction port 101 to flow toward the heat exchanger 106 side is called the heating position. As shown by the chain double-dashed line in the figure, the position where all the cool air sucked through the cool air suction port 101 is distributed to the respective discharge port sides is referred to as the total cooling position.

Next, the operation of this embodiment will be described. 3 to 7
The figure is a cross-sectional view showing each operating state. In each of the drawings, the first damper 102 has a substantially middle position of the cold air suction port 101 so that the cold air sucked from the cold air suction port 101 is distributed equally to each discharge port side and the heat exchanger 106 side. It is kept in its rotating position.

First, the cold air sucked from the cold air suction port 101 in FIG. 3 is divided into a cold air shown by an arrow P in the figure and a cold air shown by an arrow Q in the figure. The cold air shown by the arrow Q flows toward the heat exchanger 106 side, and passes through the heat exchanger 106 to be heated and raised in temperature. The heated hot air is heated by the first hot air passage 15 as indicated by arrows R and S.
It divides into 0 and the 2nd warm air passage 152, and flows to the mixing part M side through each passage. Then, in the mixing section M ₁ , the cold air shown by the arrow P and the warm air shown by the arrows R and S are mixed. As shown in FIG. 8, the cold air and the warm air are mixed in such a manner that the cold air is sandwiched by the hot air from both sides. Therefore, the mixing property is further improved as compared with the case where the warm air and the cold air are mixed together by leaning from both sides.

In the state shown in FIG. 3, since the second damper 110 closes the defrost discharge port 114 and the third damper 112 closes the lower discharge port 118, the temperature of the mixture mixed in the mixing section M is reduced. The air conditioning is performed by the upper discharge port 116 as indicated by the arrow y in the figure.
It is further discharged and guided to the occupant's head and chest through a duct (not shown).

In FIG. 4, the second damper 110 closes the defrost discharge port 114,
The third damper 111 is in a state where both the upper discharge port 116 and the lower discharge port 118 are evenly opened. In this state, the temperature-controlled air mixed in the mixing section M is indicated by arrows Y and Z in the figure.
As shown by, the discharge is performed from each discharge port.
The temperature-controlled air discharged from the lower discharge port 118 is guided to the feet of the occupant through the duct.

In FIG. 5, the second damper 110 closes the defrost discharge port 114, the second damper closes the upper discharge port 116, and
It shows a state in which the lower discharge port 118 is opened. All the temperature-adjusted air mixed in the mixing section M is at the lower discharge port 118.
As shown by the arrow Z, the ink is discharged toward the feet of the occupant.

FIG. 6 shows that the second damper 110 opens the defrost discharge port 114 and the third damper closes the upper discharge port 116.
It shows a state in which the lower discharge port 118 is opened. In this state, the temperature-adjusted air mixed in the mixing section M is the second
The damper 110 distributes the defrost discharge port 114 side direction and the lower discharge port 118 direction, and the respective discharge ports discharge as indicated by arrows X and Z in the drawing.

FIG. 7 is a view showing a state in which the first damper 110 opens the defrost discharge port 114 and closes both the upper discharge port 116 and the lower discharge port 118. In this state, all the temperature-controlled air is discharged from the defrost discharge port 114 as indicated by arrow X.

It should be noted that in the embodiment shown in FIGS. 1 to 7 described above, the first
Although the illustrated warm air passage 150 and the second warm air passage 152 are illustrated so as to maintain substantially the same passage cross-sectional area, the passage cross-sectional areas of these two passages may be formed differently. That is, the passage area of the first warm air passage 150 is made smaller than the passage area of the second warm air passage 152, and the amount of warm air flowing in the first warm air passage 150 is made smaller than the warm air flowing in the second warm air passage 152. You can also
By doing so, particularly as shown in FIG. 4, in the state where only the upper outlet 116 and the lower outlet 118 are open, the temperature of the temperature-controlled air blown out from the upper outlet 116 is relatively low and The temperature of the temperature-controlled air blown out from the air outlet 118 can be made relatively high.

FIG. 9 is a diagram showing the discharge temperature from each discharge port with respect to the rotation of the first damper 102. The line H in FIG. 9 shows the temperature of the air blown out from the lower outlet 118, and the line L in the figure shows the temperature of the air discharged from the upper outlet 116. This can be seen from Fig. 4,
Since the amount of warm air shown by the arrow S in FIG. 4 is small and the amount of warm air shown by the arrow R is large, even the temperature-controlled air mixed in the mixing section M flows relatively toward the upper outlet 116 side. The temperature of the temperature-controlled air does not rise too high, and the lower outlet
This is because the temperature-controlled wind flowing on the 118 side has a relatively high temperature.

Similarly, if the passage area of the first warm air passage 150 is made smaller than the passage area of the second warm air passage 152, the lower discharge port 118 and the defrost discharge port 114 are opened as shown in FIG. In this state, the temperature of the temperature-controlled air discharged from the defrost discharge port 114 can be made relatively low, and the temperature of the temperature-controlled air discharged from the lower discharge port 118 can be made relatively high. In this case, the temperature of the temperature-adjusted air discharged from the defrost discharge outlet 114 is indicated by the line H in FIG.
The line L in FIG. 9 shows the temperature of the air discharged from the lower discharge port 118.

In this way, by making the passage cross-sectional areas of the first warm air passage 150 and the second warm air passage 152 different, the temperature of the air toward the head or chest of the occupant is set relatively low, and the air toward the feet is also set. Can be made relatively warm, and comfortable temperature control can be performed for the occupant.

Next, based on FIGS. 10 and 11, the rotational drive mechanism of the first damper 102, the second damper 110, and the third damper 112 will be described. FIG. 10 is a view when the heater unit 100 is viewed from the side, and a plurality of links are arranged on the outer side of the case 108.

First, the first link is coaxial with the rotary shaft 104 of the first damper 102.
304 are arranged. The first link 304 is the first damper 10
It rotates with 2 and has a long hole 304a formed therein.

One end of a second link 301 having an approximately L shape is engaged with the elongated hole 304a of the first link 304 via a pin 302b. The second link 301 rotates about a shaft 302, and has a hole 301a at the other end to which the first wire 303 is connected. First wire 303
Is connected to the temperature control lever 401 shown in FIG.

The approximately Y-shaped third link 305 is rotatably supported by a shaft 306 at the substantially central portion thereof. This third
A second wire 315 is connected to one end 305c of the link 305, and a pin 3 is attached to the remaining two ends of the third link 305.
05a and pin 305b are arranged, and pin 305a is the fourth link 3
The slot 307a of 07 is engaged, and the pin 305b is engaged in the slot 308a of the fifth link 308.

The fourth link 307 is arranged coaxially with the rotation shaft 146 of the second damper 110, and rotates together with the second damper 110. The long hole 307a of the fourth link 307 is the third link 305.
Circular arc hole 307b along the rotation path of the pin 305a
And a bent hole 307c bent from the arc hole 307b.

The fifth link 308 has a substantially V shape and is rotatably supported by a shaft 310 at its center position. This fifth
The aforementioned long hole 308a is formed at one end of the link 308, and the pin 308b is provided at the other end. This pin 308 is the fifth
It is engaged with the long hole 309a of the link 309.

The fifth link 309 is coaxially supported on the rotary shaft 148 of the third damper 112 and rotates according to the third damper 112.

FIG. 11 shows a control panel section of an air conditioner arranged in all driver's seats of a vehicle. First wire 30 shown in FIG.
One end of 3 is connected to the temperature control lever 401, and the second wire 315 is connected to the mode switching lever 402. By moving the temperature control lever 401 and the mode switching lever 402 in the left and right directions in FIG. 1, the first wire 303 moves in the directions of arrows n and o in FIG.
315 also moves in the direction of arrow 1 and arrow m in FIG.

The state shown in FIG. 10 shows the state in which the first wire 303 is moved to the direction of the arrow n most, and the temperature control lever is
By moving 401 in the right direction in FIG. 11, the first wire 3
03 moves in the direction of arrow o in FIG. As a result, the second link
The first link 304 in which 301 rotates clockwise around the shaft 302 in FIG. 10 and as a result, the pin 302b engages with the long hole 304a.
, But rotates about the shaft 104 in the left direction in the drawing. That is,
The first damper 102 rotates from the cooling only position to the heating only position.

Further, FIG. 10 shows a state in which the second wire 315 is rotated most in the direction of arrow l, and the mode switching lever 40
By moving 2 to the right in FIG. 11, the second wire 315 moves in the direction of arrow m in FIG. As a result, the third link 305 rotates leftward in FIG. 10 about the shaft 306. When the pin 305a of the third link 305 is located in the arc hole 307b of the fourth link 300, the second damper 110 keeps the defrost discharge port 114 closed, and the pin 305 moves further. When it moves into the bent hole 307c, the fourth link 307 rotates about the shaft 313 in the right direction in FIG. 10, and as a result, the second damper 110 opens the defrost discharge port 114.

When the pin 305b of the third link 305 rotates leftward in the drawing about the shaft 306, the fourth link 308 also rotates rightward in the drawing about the shaft 310. As a result, pin 308b has a long hole
The fifth link 309 engaging with 309a rotates about the shaft 312 in the left rotation direction in the drawing. As a result, the third damper 112 gradually opens the lower discharge port 118 from the blocked state,
The upper discharge port 116 is rotated to a position where it is blocked.

The lever indicated by reference numeral 403 in FIG. 11 is interlocked with the inside / outside air switching damper 205 shown in FIG. 2 by a wire not shown. By switching the inside / outside air switching lever 403, the inside / outside air switching damper 205 is switched. Switches to the state in which the outside air introduction passage 207 is opened or the inside air introduction passage 209 is opened.

The lever indicated by reference numeral 404 in FIG. 11 controls the voltage supplied to the motor 204, and controls the rotation speed of the blower 203.

[Brief description of drawings]

FIG. 1 is a sectional view showing a heater unit according to an embodiment of the present invention,
FIG. 2 is a sectional view showing the whole embodiment of the present invention, and FIGS. 3 to 7 are sectional views for explaining the operation of the embodiment of the present invention.
FIG. 8 is a schematic view for showing a mixed state of cold air and warm air, FIG. 9 is a view showing a blowout temperature blown out from each discharge port, and FIG. 10 is a side view showing a damper drive mechanism of an embodiment of the present invention. FIG. 11 is a view showing an air conditioning control panel, and FIG. 12 is a sectional view showing a conventional example. 100 …… Heater unit, 101 …… Cold air inlet, 102 …… First damper, 106 …… Heat exchange air, 108 …… Case, 110 …… Second
Damper, 112 …… 3rd damper, 114 …… Defrost discharge port, 1
16 …… Upper discharge port, 118 …… Lower discharge port, 150 …… First warm air passage, 152 …… Second warm air passage.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Yasushi Matsuda, 1-4-1, Chuo, Wako, Saitama Prefecture, Honda R & D Co., Ltd. (56) Bibliography Sho 62-176008

Claims (1)

[Claims] 1. A case that forms a predetermined space therein, a cold air blowing port that is opened in the case to guide the cool air into the case, and an arbitrary temperature from the inside of the case toward the passenger compartment of the vehicle. A plurality of temperature control air outlets that are opened in the case to discharge the air set in the case, and the heat exchange housed in the case to heat the cold air sucked from the cold air inlet. And a damper that distributes cold air from the cold air suction port to the temperature control air discharge port direction and the heat exchanger direction, and warm air that has been heated through the heat exchanger is the temperature control air. A hot air passage leading to the discharge side, the hot air passage is branched at the wind outlet side of the heat exchanger,
A first warm air passage and a second warm air passage are formed so as to extend toward both sides of the heat exchanger and the cold air blowing port and both sides of the damper toward the temperature control air outlet side. The hot air passing through the first warm air passage and the second warm air passage is configured to join together so as to sandwich the cold air distributed in the direction of the temperature-controlled air outlet from the cold air inlet. A vehicle air conditioner characterized by the above.