JPS5835530Y2 - Automotive air conditioner - Google Patents

Description

[Detailed description of the invention] The present invention relates to an air conditioner used in automobiles, and more specifically to an air mix type automobile air conditioner that adjusts temperature by changing the mixing ratio of cold air and hot air. It depends.

A conventional air conditioner of this type includes a duct having an air inlet at one end and a warm air outlet and a vent outlet at the other end;
and a cooler disposed within the duct downstream of the air inlet.

A pair of hot air passages and cold air passages are provided in the duct downstream of the cooler, and a pair of hot air passages and a cold air passage are arranged in juxtaposed relation to each other, and a heater is disposed in the hot air passage to collect the air that has passed through the cooler. A portion of the air is sent downstream through the heater, and the remainder of the air that has passed through the cooler is sent downstream through the cold air passage, bypassing the heater.

The air sent from the hot air and cold air passages is mixed in the mixing chamber, and the mixed air is sent into the vehicle interior from the hot air outlet or the vent outlet.

A temperature control damper is associated with the hot air passage and the cold air passage, and the damper has a first position in which the hot air passage is open and the cold air passage is fully closed, and a second position in which the hot air passage is fully closed and the cold air passage is open. It is possible to move between the two positions.

A temperature control lever is coupled to the damper and is movable between first and second positions, the lever being in the first position.
The first temperature regulating damper is located at the position of
and when the lever is positioned in its second position, the temperature regulating damper is positioned in its second position, and the temperature regulating lever causes the temperature regulating damper to be positioned in its second position. By adjusting the position, the area of the hot air passage and the cold air passage is changed to change the flow rate of air passing through these passages, thereby controlling the temperature of the air flowing out from the outlet.

In such prior art air conditioners, when the temperature control lever is actuated between its first and second positions;
The temperature regulating damper is moved between its first and second positions, so that even a small movement of its temperature regulating lever causes a large movement of the damper, i.e. even a small movement of the temperature regulating lever causes the air outlet to air temperature fluctuates rapidly.

In addition, in such an air conditioner, when the vent outlet is opened to cool the vehicle mainly in the summer, the vent outlet is located at the top of the vehicle interior and blows cold air from the upper part of the vehicle interior into the vehicle interior. Since the air is blown out, there is no need to blow out high temperature air from its vent outlet, so that in practice the temperature control lever can be moved between its first and second positions and its second position. In addition, when opening the hot air outlet to heat the vehicle mainly in the winter, the hot air outlet is located at the bottom of the passenger compartment, and Since hot air is blown into the vehicle interior from the lower part, there is no need to blow out low temperature air from the warm air outlet, and for this reason, the temperature adjustment lever is actually It is only actuated between a position intermediate between the two positions and its first position.

As described above, in conventional air conditioners, the actual operating range of the temperature adjustment lever is narrow, and a slight movement of the lever causes the air temperature at the outlet to fluctuate rapidly. It is extremely difficult to fine-tune the air temperature in
It was difficult to obtain a comfortable cabin temperature.

An object of the present invention is to provide an air conditioner for an automobile that allows fine adjustment of the temperature of air blown into a vehicle interior by widening the operating range of a temperature adjustment lever.

According to the invention, there is provided a duct having an air inlet at one end and a pair of air outlets at the other end; a first passage disposed in the duct downstream of the cooler and communicating with the cooler and guiding air downstream; a first passage disposed within the first passage and disposed within the duct; a heater for heating the air passing through the first passage; a second passage for guiding the air passing through the cooler to the downstream side bypassing the heater; and a second passage disposed in the duct for heating the air passing through the cooler; a mixing chamber communicated with the downstream ends of the first and second passages on the side and with the pair of air outlets on the downstream side, and for mixing the air sent from the first and second passages; and a temperature control valve movable between a first position that opens the first passage and closes the second passage, and a second position that closes the first passage and opens the second passage. , connected to the temperature control valve, and having first and second
a temperature adjustment lever movable between positions for actuating the temperature adjustment valve when moved; a first position for closing one of the pair of air outlets and opening the other; and a first position for closing one of the pair of air outlets and opening the other; a mode switching valve movable between a second position for opening the air outlet and closing the other air outlet; and a mode switching valve coupled to the mode switching valve for positioning the mode switching valve in its first position. and a mode switching lever movable between a first position in which the moto switching valve is placed in the second position thereof, and a second position in which the moto switching valve is placed in the second position thereof. A positioning member is provided for actuation in response to movement of a lever between the first and second positions to position the temperature control valve, the positioning member being operable to position the temperature control valve in response to movement of the lever between the first and second positions. when the temperature control valve is positioned in one of the first and second positions; when the temperature control valve is placed in the other of the first and second positions;
and when the temperature control valve is positioned in the one of its positions, movement of the temperature control lever between its first and second positions causes the temperature to rise. the first position of the temperature control lever when the control valve is moved between the one position and the third position thereof, and the temperature control valve is positioned in the third position thereof; and is configured such that movement between the second positions causes the temperature control valve to move between the other of the first and second positions thereof and the third position. An air conditioner for an automobile is obtained.

Since the automobile air conditioner according to the present invention is constructed as described above, that is, when the mode switching lever is placed in one of its first and second positions, the temperature adjustment lever is moved. The range of movement of the temperature control valve that is operated and the range of movement of the temperature control valve that is operated by the movement of the temperature control lever when the mode switching lever is positioned at the other of its first and second positions. and are made different by the positioning member, it is possible to widen the operating range of the temperature adjustment lever, thereby making it possible to finely adjust the temperature of the air blown into the vehicle interior.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 schematically shows an air conditioner for an automobile according to an embodiment of the present invention, the air conditioner having a duct 7 with an air population 1 at one end and a pair of air outlets 3 and 5 at the other end. are doing.

A centrifugal fan 9 is provided at the air mass 1, and the fan 9 is rotated by a motor 11 to introduce air from the air mass 1 into the duct 7.

Note that an inside/outside air switching box (not shown) is attached to the air population 1, so that air inside the vehicle or air outside the vehicle can be selectively introduced into the air by a switching damper.

A cooler 13 is provided in the duct 7 on the downstream side of the fan 9 to cool the air passing through the duct.

The cooler 13 is composed of an evaporator consisting of a refrigerant evaporator of a refrigeration cycle.

A wall member 15 is provided in the duct on the downstream side of the cooler 13 to divide the passage in the duct into two passages 17 and 19, and one passage 17 has cooling water for an automobile engine as a heat source. A heater 21 is provided and a cooler 1
3, and the warmed air is sent to the downstream side through one of the passages 17.

The other passage 19 is configured to guide the air that has passed through the cooler 13 to the downstream side, bypassing the heater 21.

A mixing chamber 23 is provided in the duct 7 downstream of the passages 17 and 19.
is arranged, the mixing chamber communicates with the downstream ends of the passages 17 and 19 on the upstream side, and the pair of air outlets 3 and 5 on the downstream side, and the air sent from the two passages 17 and 19 flows into the mixing chamber. The mixture is uniformly mixed within 23.

One of the pair of air outlets 3 and 5 communicates with the hot air outlet 25, and the other air outlet 5 communicates with the vent outlet 27.

Associated with the passages 17 and 19 is a temperature control valve 29 having a damper 33 pivotally mounted on a pin 31.

The damper is movable around the pin 31 between a position A, shown in solid lines, which opens the passage 17 and closes the passage 19, and a position B, shown in dash-dotted lines, which closes the passage 17 and opens the passage 19. ing.

A wire 35 is fixed to the downstream end of the damper 33,
The wire 35 passes through an outer tube 41 that is fixed with clasps 37 and 39, and is fixed to a temperature adjustment lever 43.

The temperature adjustment lever 43 is movable around the pin 44 between a position D indicated by a solid line indicated by rHOTJ and a position E indicated by a dashed dotted line indicated by rcOOLj. When the adjusting lever 43 is moved between positions A and E, the movement of the lever 43 is transmitted via the wire 35 to the temperature regulating damper 33, so that the damper 33 is moved by the distance between positions A and B. It's like being forced to do something.

A mode switching valve 45 is associated with the pair of air outlets 3 and 5, and the mode switching valve 45 has a damper 47 that closes the air outlet 5 and closes the air outlet 3.
The damper 47 is movable between a position F shown by a solid line in which it opens and a position G shown in dashed lines in which it opens the air outlet 5 and closes the air outlet 3, one end of which damper 47 is pivotable by a pin 49. The bell crank 51 is fixed to one arm of the bell crank 51 attached to the bell crank 51.

A wire 53 is fixed to the other arm of the bell crank 51, passes through an outer tube 59 fixed with clasps 55 and 57, and is fixed to a mode switching lever 61.

The mode switching lever 61 is movable around a pin 63 between the heating position H indicated by a solid line indicated by rHEATJ and the vent position ■ indicated by a dashed line indicated by rVENT J. When the mode switching lever 61 is in the heating position H, the mode switching damper 47
is positioned at position F to close the air outlet 5, and when the mode switching lever 61 is moved from the heating position H to the venting position ■, the movement of the lever 61 is transmitted to the mode switching damper 47 via the wire 53. The damper 47 is moved to position G, thereby closing the air outlet 3.

One end of a wire 65 is also fixed to the mode switching lever 61, the wire passes through the outer tube 71 fixed by the stops 67 and 69, and the other end of the wire 65 is fixed to one end of the clamp lever 73. being dressed.

The clamp lever 73 is mounted pivotably around a pin 75 (1) and a clamp force 3 is provided at the other end of the clamp lever 73 to grip the outer tube 41 of the wire 35. I keep it.

When the mode switching lever 61 is in the heating position H, the clamp lever 73 is positioned at the position J shown by the solid line, and when the mode switching lever 61 is moved from the heating position H to the vent position ■, the movement of the lever 61 is The signal is transmitted to the clamp lever 73 via the wire 65, and the lever 73 is positioned at the position K shown by the dashed line.

When the clamp lever 73 is moved from position J to position K, the outer tube 41 held by the clamp portion of the clamp lever 73 is moved to the position shown by the two-dot chain line, and the wire 35 is also moved accordingly. be forced to move.

By the movement of the wire 35, the temperature control damper 33 is moved from the position A to the position C shown by the two-dot chain line in the middle between the positions A and B.

Therefore, the clamp lever 73 constitutes a positioning member that determines the position of the temperature adjustment damper 33.

A plate spring member 77 is attached to the mode switching lever 61, and the plate spring member is provided with a protrusion 79, which is elastically engaged with grooves 83 and 85 formed in a fixed plate 81. ing.

The grooves 83 and 85 correspond to positions H and ■ of the switching lever 61.
are formed on the fixed plate 81 at positions corresponding to the respective positions.

When the switching lever 61 is placed in the heating position H, the protrusion 79 of the leaf spring member 77 engages with the groove 83 of the fixed plate 81, and when the switching lever 61 is placed in the venting position I, the protrusion 79 engages with the groove 85. In this way, the switching lever 61 is reliably positioned at positions H and (3).

That is, the position of the temperature adjustment lever 43 and the movement between E are as follows.
This is transmitted to the mode switching lever 61 via the wire 35, the clamp lever 73, and the wire 65, which causes the switching lever 61 to move erroneously from positions H and ■.
This is prevented by the elastic engagement between the protrusion 79 of the leaf spring member 77 and the grooves 83 and 85 of the fixed plate 81.

The operation of the automobile air conditioner according to the embodiment of the present invention will be explained below.

When heating is required, the mode switching lever 61 is positioned at the heating position H.

In that case, the mode switching damper 47 is positioned at position F to close the air outlet 5 communicating with the vent outlet 27 and open the air outlet 3 communicating with the hot air outlet 25.

Further, the clamp lever 73 is positioned at position J,
The temperature regulating damper 33 is positioned at position A, and the passage 19
is closed and passage 17 is opened.

The air introduced into the duct 7 from the air population 1 by the fan 9 flows into the passage 17 through the cooler 13, and is heated through the heater 21 provided in the passage 17. The air flows into the mixing chamber 23, and from there flows into the vehicle interior through the air outlet 3 and the hot air outlet 25.

The temperature of the air flowing into the vehicle interior from the warm air outlet 25 is controlled by the position of the temperature adjustment lever 43 and its movement between positions E.

That is, when the lever 43 is in the position, the temperature control damper 3
3 is located at position A and completely closes the passage 19, and the cooler 13
Almost all of the air passing through the heater 21 passes through the heater 21.

Therefore, when the temperature adjustment lever 43 is in the position, the temperature of the air flowing into the vehicle interior from the hot air outlet 25 is the highest.

When the temperature adjustment lever 43 is moved from the position toward the position E, the movement is transmitted to the temperature adjustment damper 33 via the wire 35, and the damper 33 is moved from the position A to the position B.

As the damper 33 moves from position A to position B, the passage area of the passage 19 gradually increases and the flow rate of air flowing through the passage 19 increases, and conversely, the passage area of the passage 17 gradually decreases and its flow rate increases. The flow rate of air through passage 17 is reduced.

Therefore, as the flow rate of air flowing into the mixing chamber 23 through the passage 19 increases, the temperature of the air within the mixing chamber 23 decreases, and thus the temperature of the air blown into the vehicle interior from the hot air outlet 25 decreases. It will be done.

When the temperature adjustment lever 43 is positioned at position E, the temperature adjustment damper 33 is positioned at position C and does not move further toward position B.

Therefore, when the lever 43 is in position E, the lowest temperature air during heating is discharged from the hot air outlet 25 into the vehicle interior.

When cooling is required, the mode is switched and <-61 is placed in the vent position ■.

In that case, the mode switching damper 47 is positioned at position G to open the air outlet 5 communicating with the vent outlet 27 and close the air outlet 3 communicating with the hot air outlet 25.

The movement of the mode switching lever 61 from the position H to the position 2 is transmitted to the clamp lever 73 via the wire 65, and the clamp lever 73 is moved from the position J to the clamp lever 73 (1 position J).

That Franz. By the movement of the lever 73, the outer tube 41 of the wire 35 is moved to the position shown by the two-dot chain line, and the wire 35 is also moved accordingly.
is moved from position A to position C, opening passages 17 and 19.

In this state, part of the air that has passed through the cooler 13 is transferred to the passage 1.
7, is heated by the heater 21, and flows into the mixing chamber 23, while the remainder of the air that has passed through the cooler 13 flows into the passage 1.
9 , bypasses the heater 21 and flows into the mixing chamber 23 .

The air from the passages 17 and 19 is mixed in the mixing chamber 23, passes through the air outlet 5, and is discharged from the vent outlet 27 into the vehicle interior.

As in the case of heating, the temperature of the air flowing into the vehicle interior from the vent outlet 27 is controlled by the position of the temperature adjustment lever 43 and the movement between E and E.

That is, when the lever 43 is in the position, the temperature control damper 3
3 is located at position C to open passages 17 and 19, so that part of the air that has passed through the cooler 13 passes through the heater 21 and the remainder is sent downstream, bypassing that heater.

During cooling, when the temperature adjustment lever 43 is in the position, the temperature of the air flowing into the vehicle interior from the vent outlet 27 is the highest.

When the temperature adjustment lever 43 is moved from the position to the position E, the movement is transmitted to the temperature adjustment damper 33 via the wire 35, and the damper 33 is moved from the position C to the position B.

As a result, the passage area of the passage 17 is gradually reduced, and conversely, the passage area of the passage 19 is gradually expanded.

Thus, as the temperature adjustment damper 33 approaches position B from position C, the amount of air flowing through passage 17 decreases, and conversely, the amount of air flowing through passage 19 increases.

Therefore, the temperature of the air mixed in the mixing chamber 23 decreases, that is, the temperature of the air sent from the vent outlet 27 into the vehicle interior decreases.

When the temperature adjustment lever 43 is located at position E, the temperature adjustment damper 33 is located at position B, fully opening the passage 17, and almost all of the air that has passed through the cooler 13 passes through the passage 19 to the mixing chamber 23. sent inward.

Therefore, when the lever 43 is in the position E, air at the lowest temperature during cooling is discharged from the vent outlet 27 into the vehicle interior.

In the air conditioner according to the embodiment of the present invention described above, temperature control is performed with characteristics as shown in FIG.

That is, in FIG. 2, the vertical axis represents the temperature of the air released from the air outlets 25 and 27, and the horizontal axis represents the temperature adjustment lever 43.
and the position between E and E are shown.

When the mode switching lever 61 is in the heating position H, that is, during heating, the temperature change is shown by a solid line, and the mode switching lever 61
The temperature change when is in the vent position ■, that is, during cooling, is shown by a dotted line.

As described above, in the air conditioner according to the present invention, the position of the temperature adjustment lever 43 and the distance between The temperature of the air flowing out from the outlet 25 or 27 changes gradually as shown in FIG. is obtained.

On the other hand, in the conventional technology, as mentioned earlier,
When the temperature adjustment lever 43 moves between positions A and E, the temperature adjustment damper 33 is moved between positions A and B, so the temperature control of the air flowing out from the outlet is as shown in FIG. has a large slope, that is, the temperature of the air flowing out from the outlet changes rapidly with a slight movement of the lever 43, making it extremely difficult to obtain a comfortable temperature inside the vehicle.

In the above explanation, it has been stated that when the mode switching lever 61 is in position H and the temperature adjustment lever 43 is in position, the temperature adjustment damper 33 is in position A. However, when the mode switching lever 61 is in position , and when the temperature adjustment lever 43 is placed at position E, the temperature adjustment damper 33 is placed at position B, and when the mode switching lever 61 is moved from position 2 to position H, the clamp lever 73 is placed at position Similar effects can be obtained by moving from position K to position J and positioning the temperature adjustment damper 33 to position C, and this is obvious to those skilled in the art, so illustration is omitted.

As described above, in the automotive air conditioner according to the present invention, the temperature control valve 29 is actuated in response to the movement of the mode switching lever 61 between the positions (1) and (1) and the position (H). A positioning member 73 is provided, and the positioning member 73 is configured to close the temperature control valve 2 when the mode switching lever is positioned at one of its positions (3) and (H).
9 is positioned at one of its positions A and B, and when the mode switching lever 61 is positioned at the other of its positions II and H, the temperature control valve 29 is positioned at its positions A and H. When the temperature control valve 29 is positioned at a position C intermediate between the positions B and the temperature control valve 29 is positioned at one of the positions, the temperature control valve 29 is moved between the positions E and the temperature control lever 43. When the temperature adjustment valve 29 is moved between the one position and the intermediate position C, and the temperature adjustment valve 29 is positioned at the intermediate position C, the temperature adjustment lever 43 is moved between the positions E and the intermediate position C. , the temperature control valve is moved between the other of its positions A and B and the intermediate position C, that is, the mode switching lever 61 is moved between its position A movement range of the temperature control valve 29 (for example, between A and C) that is activated by movement of the temperature control lever 43 when the temperature control valve 29 is placed in one of the positions of (1) and (H);
When the mode switching lever 61 is placed in the other position of its position ■ and position H, the temperature adjustment lever 43
Since the movement range (for example, between C and B) of the temperature control valve 29, which is activated by the movement of The effect is that the temperature of the air blown into the room can be finely adjusted.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the entirety of an air conditioner for an automobile according to an embodiment of the present invention, FIG. 2 is a temperature control characteristic diagram of the air conditioner according to an embodiment of the present invention, and FIG. FIG. 3 is a temperature control characteristic diagram of the harmonizing device. 1... Air inlet, 3, 5... Air outlet, 7... Duct, 9... Fan, 11
...Morph, 13...Cooler, 15...
...Wall members, 17.19...Passage, 21.
... Heater, 23 ... Mixing chamber, 25 ...
... Warm air outlet, 27... Vent outlet,
29...Temperature control valve, 31...Pin,
33...Temperature control damper, 35...Wire, 37, 39...Stopper, 41...
Outer tube, 43...Temperature adjustment lever 44...
...Pin, 45...Mode switching valve, 47...
...Damper, 49...Pin, 51...
・Bell crank, 53...Wire, 55, 5
7... Stopper, 59... Outer tube, 61.
...Mode switching lever, 63...Pin, 6
5...Wire, 67.69...Stopper, 71...Outer tube, 73...Positioning member, that is, clamp lever -175°/pa. Pin, 77...Plate spring member, 79...
Protrusion, 81...National board, 83, 85...
・Groove, A, B, C, D. E, F, G, H, I, J, K...Position.

Claims (3)

[Scope of utility model registration request] (1) a duct having an air inlet at one end and a pair of air outlets at the other end; and a cooler disposed within the duct for cooling air flowing from the air population through the duct; a first passage disposed in the duct downstream of the cooler and guiding air that has passed through the cooler to the downstream side; and a first passage disposed within the first passage and guiding the first passage. a heater for heating the passing air; and a second heater for guiding the air passing through the cooler to the downstream side, bypassing the heater.
a passageway disposed within the duct and communicating with the downstream ends of the first and second passageways on the upstream side and with the pair of air outlets on the downstream side, respectively, and communicating with the pair of air outlets on the downstream side, respectively. a mixing chamber for mixing air sent from the passage; a first chamber that opens the first passage and closes the second passage;
a temperature control valve movable between a position and a second position closing the first passage and opening the second passage; and a temperature control valve coupled to the temperature control valve and movable between the first and second positions. a temperature control lever which is movable and operates the temperature control valve when moving; a first position in which one of the pair of air outlets is closed and the other is open; a mode switching valve movable between a second position that closes the other air outlet; and a first mode switching valve coupled to said mode switching valve for positioning said mode switching valve in said first position thereof. and a mode switching lever movable between a mode switching lever and a second position for positioning the mode switching valve in the second position. A positioning member is provided for actuating to position the temperature control valve in response to movement of the switching lever between the first and second positions, the positioning member being operable to position the temperature control valve in response to movement of the switching lever between the first and second positions; positioning the temperature control valve in one of the first and second positions thereof; Said first of it
and positioning the temperature control valve in a third position between its first and second positions, wherein the temperature control valve is in the one of its positions. movement of the temperature control lever between its first and second positions causes the temperature control valve to move between its one position and its third position; When the temperature control valve is positioned in its third position, movement of the temperature control lever between its first and second positions causes the temperature control valve to move between its first and second positions. An air conditioner for an automobile, characterized in that it is configured to be moved between the other of the positions and the third position. (2) Utility Model Registration The automotive air conditioner according to claim (1), wherein the temperature control valve and the mode switching valve each have a pivotable damper. (3) Utility Model Registration In the automotive air conditioner according to claim (2), the damper of the temperature control valve is connected to the temperature control lever by a wire, and the temperature control valve positioning member is connected to the crank lever. One end of the clamp lever (7) is provided with a clamp portion for gripping the outer tube of the wire, the other end is connected to the mode switching lever by a wire, and the clamp lever (7) An air conditioner for an automobile that is pivotally mounted between one end and the other.