JP2664966B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) An air conditioner according to the present invention is used for heating or cooling an interior of an automobile.

(Conventional technology) For the purpose of air conditioning in a car cabin,
As described in JP-A-38106 and JP-A-63-90416, various types of air conditioners are used.

Such a conventional air conditioner is basically configured as shown in FIG.

That is, a blower 2 is provided on the leeward side or leeward side (downward side in the case of cooling shown in the figure) of a duct 1 through which air to be conditioned is circulated.
The evaporator 3 is provided in the middle of the duct 1 so as to cover the entire inside of the duct 1. A heater core 4 is provided on the leeward side of the evaporator 3 inside the duct 1 so as to cover a part of the inside of the duct 1, and a damper 5 is provided between the evaporator 3 and the heater core 4. This damper 5
Is for adjusting the amount of the air cooled through the evaporator 3 that flows into the heater core 4 and the amount that flows into the bypass passage 6 that short-circuits the heater core 4.

When air conditioning of a vehicle interior or the like is performed by such a conventional air conditioner, warm water is passed through the heater core 4 and refrigerant is passed through the evaporator 3, and the blower 2 is operated to blow air into the duct 1. Shed. The air taken in from the windward side of the duct 1 and cooled by passing through the evaporator 3 is then sucked into the blower 2 through the heater core 4 or the bypass passage 6, and further to a space to be air-conditioned, such as a vehicle interior. Blow out.

The temperature of the air blown into the space can be adjusted by moving the position of the damper 5, and the temperature of the space can be arbitrarily adjusted by adjusting the damper 5. That is, the damper 5
Is rotated clockwise (upward) in FIG.
When the ratio of the air passing through the heater core 4 increases and the temperature of the air blown into the space increases, and the damper 5 is turned counterclockwise (downward) in FIG. The rate of passage increases, and the temperature of the air blown into the space decreases.

When the damper 5 is rotated to the intermediate position, a part of the air cooled by passing through the evaporator 3 passes through the heater core 4 and is warmed, and the remaining air passes through the high-pass passage 6 and remains leeward. Sent to In this manner, the air warmed by the heater core 4 and the low-temperature air that has passed through the bypass passage 6 are mixed while passing through the blower 2 and blown out toward the space as intermediate-temperature air.

(Problems to be Solved by the Invention) However, the conventional air conditioner configured and operated as described above has the following disadvantages.

That is, after passing through the evaporator 3, the heater core 4
The warm air (white arrow in FIG. 4) and the cool air (also black arrow) passing through the air passage and the bypass passage 6 are mixed with each other while passing through the downstream portion of the duct 1 and the blower 2, and then mixed in the vehicle cabin. However, the hot air and the cold air having different densities are not always sufficiently mixed, and the temperature distribution of the air blown into the space tends to be uneven and irregular.

As described above, when the temperature distribution of the blown air becomes non-uniform and irregular, an occupant or the like who directly receives the blown air may feel uncomfortable.

The air conditioner of the present invention solves the above-mentioned inconvenience by giving the temperature distribution of the blown air regularity.

(Means for Solving the Problems) An air conditioner of the present invention includes a hot air duct for flowing temperature inside, a cold air duct provided in contact with the hot air duct and flowing cold air inside, A shutter that rotates about a pivot provided between both the wind and cold air ducts and opens the end opening of one of the ducts with the rotation, and a shutter that alternates between the shutters in a short time Driving means, setting means for setting the temperature of the space to be air-conditioned, detecting means for detecting the temperature of the space to be air-conditioned, and the shutter driving means based on signals sent from the setting means and the detecting means. And a controller for sending a signal.

When the temperature of the space detected by the detecting means is higher than the temperature set by the setting means, the controller increases the time during which the shutter opens the end groove of the cold air duct according to the degree of the increase. Then, when the temperature of the space detected by the detecting means is lower than the temperature set by the setting means, the time during which the shutter opens the end trench of the hot air duct is increased according to the degree of the lowering. Function.

(Operation) In the case of the air conditioner of the present invention configured as described above,
The hot air and the cool air alternately blow out from the blow outlet alternately in accordance with the switching of the shutter.

Therefore, a person who directly hits the blown air feels as if a wind at an intermediate temperature between the hot air and the cold air is emerging.

(Example) Next, the present invention will be described in more detail while describing the illustrated example.

FIG. 1 is a schematic perspective view showing a first embodiment of an air conditioner of the present invention, and FIG. 2 is a diagram showing a temperature change of air blown out from the air conditioner.

Reference numeral 7 denotes a hot air duct through which the warm air whose temperature has risen through the heater core 4 (see FIG. 4) is circulated. Also, 8
Is a cold air duct, which is provided adjacent to the hot air duct 7, and through which the cold air whose temperature has dropped through the evaporator 3 (see FIG. 4) is circulated. These hot air and cold air ducts 7, 8 are each formed in a semicircular cross section.
They are arranged so as to form a circular cross section when they are fitted together.

Further, a center of a circular shutter plate 11 is pivotally supported on a pivot 10 provided at an intermediate portion of the partition wall 9 separating the hot and cold air surface ducts 7 and 8. A shutter plate which is large enough to cover the end openings of both ducts 7 and 8 and has a semicircular through hole 12 which is aligned with the end openings of either duct 7 (or 8). The teeth formed on the outer peripheral edge of the gear 11 mesh with the drive gear 14 via the intermediate gear 13, and the shutter plate is driven by the motor 15.
11 is intermittently rotatable by 180 degrees. That is, the shutter plate 11 is activated by a signal from the controller 16,
The motor 15 whose stop is controlled can be switched to a state in which only the end opening of one of the ducts 7 (or 8), hot air or cold air, is opened.

The controller 16 detects the temperature of the space to be air-conditioned, such as a resistor provided on the dashboard, for setting the temperature of the space to be air-conditioned, and the temperature sensor such as a temperature sensor installed in the passenger compartment. The start and stop timings of the motor 15 are adjusted on the basis of a signal sent from the detection means 18.

That is, when the temperature of the space detected by the detecting means 18 is higher than the temperature set by the setting means 17, the controller 16 changes the through hole 12 of the shutter plate 11 If the temperature of the space detected by the detecting means 18 is lower than the temperature set by the setting means 17 by extending the time of alignment with the end opening, the through-hole 12 is heated according to the degree of lowering. The time for alignment with the end opening of the wind duct 7 is increased.

In the case of the air conditioner of the present invention configured as described above,
From the opening (not shown) of the air conditioner provided on the leeward side of the shutter plate 11, warm air indicated by a white arrow in FIG. 1 and cold air indicated by a black arrow in the same figure are alternately blown.

For example, the temperature of the space detected by the detection means 18 is
If the temperature is higher than the temperature set by the setting means 17,
It is determined that it is necessary to lower the temperature in the space, and in order to increase the ratio of the cool air in the air blown out from the opening to the ratio of the warm air, the through hole 12 of the shutter plate 11 is provided with the cool air duct 8.
Increase the time that the end openings are aligned. At the same time, the time during which the through hole 12 is aligned with the end opening of the hot air duct 7 is shortened accordingly.

In this state, the temperature of the air blown out from the opening of the air conditioner changes as shown in FIG. The time in which the hot air and the cold air are alternately blown out is, for example, about two seconds as one cycle, and the cycle is repeatedly performed in a short time. I feel that is blown out. That is, when the solid line a in FIG. 2 is the vehicle interior temperature, the occupant's perceived temperature is as indicated by the chain line b in FIG.

On the contrary, when the temperature of the space detected by the detecting means 18 is lower than the temperature set by the setting means 17, contrary to the above-mentioned cold, it is determined that the temperature in the space needs to be raised. In order to increase the ratio of the warm air in the air blown out from the opening to the ratio of the cool air, the time during which the through hole 12 of the shutter plate 11 is aligned with the end opening of the warm air duct 7 is shortened. At the same time, the time during which the through-hole 12 is aligned with the end opening of the cool air duct 8 becomes longer.

In the case of the above-described first embodiment, one shutter plate 11 is rotated intermittently by 180 degrees in order to selectively open the end openings of the hot air duct 7 and the cold air duct 8. However, as shown in FIG. 3, two shutter plates 19 and 20 are rotatably provided in series with each other and independently of each other, and the rotational speeds of both shutter plates 19 and 20 are changed. By adjusting the timing at which the through holes 21 and 22 formed in the first and second shutters 20 and 20 are aligned with each other, the hot and cold air and the end openings of the two ducts 7 and 8 can be appropriately adjusted while the shutter plates 19 and 20 are rotated. It can be released at an appropriate timing.

(Effect of the Invention) Since the air conditioner of the present invention is configured and operates as described above, the temperature distribution of the blown air does not become irregular, and the passengers directly hitting the blown air feel uncomfortable. There is nothing.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a first embodiment of the air conditioner of the present invention, FIG. 2 is a diagram showing a temperature change of air blown out of the air conditioner, and FIG. FIG. 4 is a schematic perspective view showing two embodiments, and FIG. 4 is a schematic sectional view showing a conventional air conditioner. 1: duct, 2: blower, 3: evaporator, 4: heater core,
5: damper, 6: bypass passage, 7: hot air duct, 8: cold air duct, 9: partition, 10: pivot, 11: shutter plate, 12: through hole, 13: intermediate gear, 14: drive gear, 15: Motor, 16: controller, 17: setting means, 18: detecting means, 19, 20: shutter plate, 21, 22: through hole.

Claims (2)

(57) [Claims] 1. A hot air duct for flowing temperature inside, a cold air duct provided adjacent to the hot air duct for flowing cold air therein, and a pivot provided between both hot air and cold air ducts. A shutter that rotates about the center and opens an end opening of one of the ducts with the rotation, and a shutter driving unit that alternately switches the shutter in a short time.
Setting means for setting the temperature of the space to be air-conditioned; detecting means for detecting the temperature of the space to be air-conditioned; and control for sending a signal to the shutter driving means based on signals sent from the setting means and the detecting means. The controller opens the end opening of the cold air duct according to the degree of the increase when the temperature of the space detected by the detection means is higher than the temperature set by the setting means. If the temperature of the space detected by the detecting means is lower than the temperature set by the setting means, the time during which the shutter opens the end opening of the hot air duct is reduced according to the degree of lowering. Air conditioner to lengthen. 2. The method according to claim 1, wherein the short time for switching the shutter is two times.
The air conditioner according to claim 1, wherein the time is within seconds.