JP2005343390A - Method for controlling air volume independently controllable air-conditioner unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for controlling an air volume independently controllable air-conditioner unit capable of preventing fluctuation of air volume in the other air-conditioning area when the air-conditioning condition of conditioned air to a part of air-conditioning area is changed. <P>SOLUTION: A controller 29 to adjust the volume of the conditioned air to be fed to an air-conditioning area A2 on a front passenger seat side corresponding to the change of the air-conditioning condition of conditioned air to be fed to an air-conditioning area A1 on a driver's seat side is provided. For example, when the volume of the conditioned air to the air-conditioning area A1 is increased, the ratio of the air volume to a second air feed passage 11 is reduced by turning an air distribution door 13, the speed of a blower motor 5 is increased according to the turning angle of the air distribution door 13 to increase the air volume to be fed from a blower 6. The constant volume of conditioned air to be fed to the air-conditioning area A2 on the front passenger seat side can be maintained. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a control method for an air volume independent control air conditioner unit that supplies air conditioned air independently for each of a plurality of air conditioning areas by a single blower, and in particular, an air volume independent control air conditioner unit suitable for use as a vehicle air conditioner or the like. Relates to the control method.

  Conventionally, as this type of air volume independent control air conditioner unit, two air passages connected to one blower, an air distribution door for adjusting the air distribution amount to these air passages, and 2 air conditioning air from the air passage are provided. A plurality of air outlets that blow out to one air-conditioning region, each air passage having a mix door that adjusts the air flow rate of the heater core, and a air outlet door that opens and closes each air outlet, and one air passage When the open / close position of the provided mix door or outlet door is changed, the rotation angle of the air distribution door is controlled so as to suppress the fluctuation of the air volume from the outlet provided in the other air passage. (For example, refer to Patent Document 1).

Also, two air passages connected to one blower, an air distribution door that adjusts the air distribution amount to these air passages, and a plurality of outlets that blow air-conditioned air from the air passage to two air-conditioning regions, Each air passage is provided with a mix door for adjusting the air flow rate of the heater core and an air outlet door for opening and closing each air outlet, and outputs output signals from temperature sensors installed at a plurality of predetermined locations. It is also possible to control the blower, the mix door, and the blowout door, respectively, and to control the temperatures of the two air-conditioning regions independently (see, for example, Patent Document 2).
Japanese Unexamined Patent Publication No. 2000-94928 (paragraph number 0020 to paragraph number 0030, FIG. 1) Japanese Patent No. 3399101 (paragraph number 0015 to paragraph number 0027, FIG. 1)

  By the way, in the above-described prior art, in the one described in Japanese Patent Laid-Open No. 2000-94928, when the opening / closing position of the mix door or the outlet door provided in one of the air passages is changed, the air distribution door By controlling the rotation angle of the two air passages and adjusting the air distribution amount to the two air passages, the variation in the air flow amount from the air outlet provided in the other air passage is suppressed to a small level. Since the amount of air sent from the blower does not change without control, there is a problem that when the amount of air in one air passage is changed, the amount of air in the other air passage changes. For example, when the air volume independent control air conditioner unit is mounted on a vehicle and air conditioned air is supplied to the air conditioning areas on the driver's seat and passenger's side, the user operates the driver's seat to increase or decrease the air conditioned air volume. At this time, in the air conditioning area on the passenger seat side, the air-conditioning air volume changes against the intention of another user, which may impair the comfortable air conditioning effect in the air conditioning area on the passenger seat side.

  Moreover, in what is described in Japanese Patent No. 3399101, the temperature of two air-conditioning areas, for example, the air-conditioning areas of the driver's cab and the passenger seat can be controlled independently, but the air volume in one air passage is increased or decreased. In this case, since the air flow rate from the blower does not change without controlling the blower itself, there is a problem that the air flow rate in the other air passage changes, and moreover, a plurality of temperature sensors are required, which increases the cost. There was also a problem.

  The present invention has been made in consideration of the conventional technology as described above, and its purpose is to change the air conditioning condition of the conditioned air supplied to at least one of the plurality of air conditioning regions to another air conditioning region. An object of the present invention is to provide a control method of an air volume independent control air conditioner unit capable of preventing the air volume fluctuation of supplied air conditioning air.

  In order to achieve the above object, according to the first aspect of the present invention, a blower that blows air to a plurality of air passages with one blower and adjusts the air distribution amount to these air passages, and air-conditioning air to a plurality of air-conditioning regions. An air volume independent control air conditioner unit having a plurality of air outlets for blowing out air, wherein the air volume control and temperature adjustment of the air conditioning air and switching control of the air outlets are performed independently for each air conditioning region. In the control method, the air volume of the conditioned air supplied to the other second air-conditioning area is kept constant in response to a change in the air-conditioning condition of the conditioned air supplied to the first air-conditioning area among the plurality of air-conditioning areas. The controller includes a controller that changes the rotational speed of the blower.

  Thus, in the first aspect of the present invention, when the air conditioning condition of the conditioned air supplied to the first air conditioning area changes, the air distribution amount to each air passage is adjusted by the air distribution door, and the blower rotation speed is adjusted by the controller. By controlling and increasing / decreasing the amount of air sent from the blower, the air volume of the air-conditioning air supplied to the second air-conditioning area is kept constant, so that fluctuation in the air-conditioning air volume supplied to the second air-conditioning area is prevented. can do.

  According to a second aspect of the present invention, in the first aspect of the invention, in accordance with a change in the amount of conditioned air supplied to the first air-conditioned area, the amount of conditioned air supplied to the second air-conditioned area is reduced. The rotation speed of the blower was changed so as to keep it constant.

  Thus, in the invention according to claim 2, for example, when an operation of increasing the air volume of the conditioned air supplied to the first air-conditioning area is performed, the air distribution volume to each air passage is adjusted by the air distribution door, thereby By increasing the volume of conditioned air to the first air-conditioning area and decreasing the volume of conditioned air to the second air-conditioning area, the controller controls the blower rotation speed to increase the amount of air sent from the blower. 2 The effect of the decrease in the air volume on the air-conditioning area is canceled out and the air volume on the second air-conditioning area is kept constant. Similarly, when the operation of reducing the air volume of the conditioned air supplied to the first air conditioning area is performed, the air volume to the second air conditioning area is kept constant. Thereby, when the air volume of the conditioned air to the 1st air-conditioning area is changed, the air volume fluctuation of the conditioned air to the 2nd air-conditioning area can be prevented.

  According to a third aspect of the present invention, in the first aspect of the present invention, in accordance with a change in the temperature mode of the conditioned air supplied to the first air-conditioned area, the amount of the conditioned air supplied to the second air-conditioned area The number of rotations of the blower is changed so as to keep constant.

  Thus, in the invention according to claim 3, when the temperature mode of the conditioned air supplied to the first air-conditioning area is switched, the passage resistance of each temperature mode is different and the passage resistance changes. Because the air volume of the air-conditioning air supplied to the second air-conditioning area is kept constant by adjusting the air distribution amount to the road and controlling the blower rotation speed by the controller and adjusting the air-flow volume from the blower. In this case as well, it is possible to prevent air volume fluctuations of the conditioned air supplied to the second air-conditioning region.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the conditioned air supplied to the second air-conditioned area in response to a change in the outlet position of the conditioned air supplied to the first air-conditioned area. The rotation speed of the blower was changed so as to keep the air volume constant.

  In this way, in the invention according to claim 4, when the blowout port position of the conditioned air supplied to the first air conditioning region is changed, the passage resistance varies depending on each blowout port position, and the passage resistance changes. In addition to adjusting the air distribution amount to the air passage and controlling the blower rotation speed by the controller and adjusting the air flow sent from the blower, the air flow of the air conditioning air supplied to the second air conditioning area is kept constant. Therefore, also in this case, fluctuations in the air volume of the conditioned air supplied to the second air conditioning region can be prevented.

  According to a fifth aspect of the present invention, in the first aspect of the invention, the controller calculates the rotation speed of the blower in response to a change in an air conditioning condition of the conditioned air supplied to the first air conditioning region. It was set as the structure provided with the means.

  Thus, according to the fifth aspect of the present invention, when the air conditioning condition of the conditioned air supplied to the first air conditioning area changes, the rotation speed of the blower is calculated by the calculation means of the controller. The amount of air sent from the blower can be adjusted so that the amount of conditioned air supplied to the second air-conditioning region is kept constant by controlling the number.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the calculation means calculates the rotation speed of the blower based on the rotation angle of the air distribution door or the rotation speed of the blower. The rotation angle of the air distribution door is calculated.

  Thus, in the invention according to claim 6, when the air conditioning condition of the conditioned air supplied to the first air conditioning region changes, the rotation angle of the air distribution door is controlled to adjust the air distribution amount to the plurality of air passages. Thereafter, by using the rotation angle of the air distribution door as a control factor, the rotation speed of the blower can be calculated so as to keep the air volume of the air-conditioning air to the second air-conditioning area constant.

  As described above, in the present invention, when the air conditioning condition of the conditioned air supplied to the first air conditioned area among the plurality of air conditioned areas changes, the air volume of the conditioned air supplied to the other second air conditioned area is kept constant. Therefore, it is possible to prevent the air volume of the conditioned air from fluctuating against the user's intention in the second air conditioning area. Therefore, there is an effect that a comfortable air-conditioning effect can be ensured in each air-conditioning area when the air quantity is independently supplied to a plurality of air-conditioning areas with only one blower of the air-volume independent control air-conditioning unit. In particular, since the number of sensors can be reduced as compared with the conventional one having a plurality of temperature sensors, there is an effect that the cost is low.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is an explanatory diagram of an air volume independent control air conditioner unit in which a control method according to an embodiment of the present invention is used, and FIG. 2 shows a processing procedure when the air volume independent control air conditioner unit is controlled by the control method of this embodiment. A flowchart and FIG. 3 are figures which show the example of control of the air volume independent control air-conditioner unit by the control method of this embodiment.

  An air volume independent control air conditioner unit 1 shown in FIG. 1 is provided, for example, in a vehicle (not shown), and sends an air blowing unit 2 for blowing air, an air conditioning unit 3 for adjusting temperature, and an air conditioning area A1 on the driver's seat side and the passenger seat side. It is comprised from the blowing part 4 which blows off to air conditioning area | region A2.

  The blower unit 2 includes a blower motor 5, a blower (blower) 6 driven by the blower motor 5, and a storage case 7 that has an inlet / outlet and stores the blower motor 5 and the blower 6. The air conditioning unit 3 has a case 8 having one end connected to the outlet of the storage case 7. In the case 8, an evaporator 9 that cools air, a partition wall 12 that extends downstream from the evaporator 9 and partitions the case 8 into a first air passage 10 and a second air passage 11, and this An air distribution door 13 that is disposed at an upstream end of the partition wall 12 and adjusts an air distribution amount to the air passages 10 and 11, a heater core 14 that is disposed downstream of the air distribution door 13, Mixing doors 15 and 16 for adjusting the ratio of the air volume passing through the heater core 14 and the air volume bypassed are accommodated.

  The cross-sectional areas of the first air passage 10 and the second air passage 11 are set substantially equal to each other and correspond to half of the total cross-sectional area of the case 8. The evaporator 9 is provided so as to block the entire cross-sectional area of the case 8, and the heater core 14 is provided so as to block substantially half of the cross-sectional areas of the air passages 10 and 11. The air distribution door 13 includes a support shaft 13a provided at an upstream end of the partition wall 12, a rotation piece 13b rotatably attached to the support shaft 13a, and a rotation piece 13b via the support shaft 13a. The control motor 13c is driven, and the proportion of the air distribution amount to each of the air passages 10 and 11 is adjusted by rotating the rotating piece 13b to a predetermined angle. For example, when the rotating piece 13b is rotated in the clockwise direction in FIG. 1 (the direction indicated by the arrow A in FIG. 1) by the operation of the control motor 13c, the proportion of the air distribution amount to the first air passage 10 is reduced, The ratio of the air distribution amount to the 2 ventilation path 11 increases. On the contrary, when the rotating piece 13b rotates counterclockwise in FIG. 1 (the direction indicated by the arrow B in FIG. 1), the ratio of the air distribution amount to the first air passage 10 increases, and the second The ratio of the air distribution amount to the air duct 11 decreases. The mix door 15 in the first air passage 10 is rotatably attached to the upstream corner (upper left corner in FIG. 1) of the heater core 14, and all the air passing through the first air passage 10 through the heater core 14 is passed through. It rotates over a range from a full hot (fully open) position leading to the heater core 14 to a full cool (fully closed) position that bypasses the heater core 14. Similarly, the mix door 16 of the second air passage 11 is also rotatably attached to the upstream corner portion (lower left corner portion in FIG. 1) of the heater core 14, and the air passing through the second air passage 11 through the heater core 14. , All of them rotate over a range from a full hot (full open) position leading to the heater core 14 to a full cool (full closed) position for bypassing the heater core 14.

  The blowout unit 4 includes a vent outlet 17, a foot outlet 18, and a differential outlet 19 installed in the air conditioning area A1 on the driver's seat side, and a vent outlet 20 installed in the air conditioning area A2 on the passenger seat side, It consists of a foot outlet 21 and a differential outlet 22 and outlet doors 23 to 28 that open and close each outlet 17 to 22. The conditioned air from the first air passage 10 is supplied through the vent air outlet 17 and the foot air outlet 18 toward the upper body and the feet of the user (driver) in the air-conditioning area A 1, and through the differential air outlet 19. The air flow is supplied toward the windshield of the air conditioning area A1, and the amount of each blown air is adjusted by the opening / closing positions of the blowout doors 23-25. Similarly, the conditioned air from the second air passage 11 is blown out toward the upper body and the feet of the user (assistant) in the air-conditioning area A2 through the vent outlet 20 and the foot outlet 21, respectively, and the differential outlet 22 Are blown out toward the windshield of the air conditioning area A2, and the amount of each blown air is adjusted by the opening / closing positions of the blowout doors 26-28.

  In the control method of the present embodiment, the conditioned air supplied to the other second air-conditioning areas in response to changes in the air-conditioning conditions of the conditioned air supplied to the first air-conditioning area among the air-conditioning areas A1 and A2. A controller 29 is used for changing the rotational speed of the blower 6 so as to keep the air volume constant. The controller 29 includes a calculation unit 30 that calculates the rotation speed of the blower 6 using the rotation angle of the air distribution door 13 as a control factor in response to a change in the air conditioning condition of the conditioned air supplied to the first air conditioning region. A control signal for controlling the rotational speed of the blower 6 is output.

  And in the control method of this embodiment, when the air-conditioning condition of the conditioned air supplied to the driver's seat side air-conditioning area A1 is changed, the conditioned air supplied to the passenger-side air conditioning area A2 according to the processing procedure shown in FIG. The air volume is adjusted. That is, as the procedure S1, for example, when an operation for increasing the air volume of the conditioned air to the air conditioning area A1 on the driver's seat side is performed as in the control example (1) in FIG. 3, according to the operation signal of the air volume as the procedure S2. The control motor 13c of the air distribution door 13 is actuated, and the rotating piece 13b rotates counterclockwise in FIG. 1 (direction indicated by arrow B in FIG. 1) and stops at a predetermined angle. As a result, the proportion of the air distribution amount to the first air passage 10 increases, and the proportion of the air distribution amount to the second air passage 11 decreases. Next, in step S3, based on the rotation angle of the rotation piece 13b, the calculation means 30 calculates the rotation number of the blower 6, outputs a rotation number signal from the controller 29 in step S4, and sets the blower motor 5 in step S5. The speed is increased and the amount of air sent from the blower 6 is increased. As a result, since the ratio of the air distribution amount to the first air passage 10 has already increased in the procedure 2 and the ratio of the air distribution amount to the second air passage 11 has decreased, the first air passage 10 is obtained as the procedure 6. The air distribution amount to the second air passage 11 is further increased to a predetermined amount, and the air distribution amount to the second air passage 11 is kept constant.

  In this case, the speed of rotation of the blower motor 5 is increased in accordance with the operation signal of the air volume to increase the air volume to the first air passage 10 and the second air passage 11, and then the calculation means 30 is based on the speed increase of the blower motor 5. However, the rotational angle of the air distribution door 13 may be calculated and operated, and the control motor may be operated to rotate the rotating piece 13b by the angle calculated in the counterclockwise direction of FIG.

  On the other hand, when the air volume reduction operation is performed in the air conditioning area A1 on the driver's seat side as in the control example (2) in FIG. 3, the air volume ratio to the second air passage 11 is increased and the air volume sent from the blower 6 is changed. By decreasing, the air volume to the air conditioning area A2 on the passenger seat side is kept constant.

  Further, the control when the switching operation from the cooling mode to the neutral mode is performed in the air conditioning region A1 on the driver's seat side as in the control example (3) in FIG. 3 is as follows. When the passage resistance in the cooling mode is larger than the passage resistance in the neutral mode, the passage resistance decreases at the time of switching the mode. Therefore, by increasing the air volume ratio to the second air passage 11 and reducing the amount of air sent from the blower 6 The air volume to the air conditioning area A2 on the passenger seat side is kept constant. Further, when switching operation from the cooling mode to the heating mode is performed in the air conditioning region A1 on the driver's seat side as in the control example (4) in FIG. 3, the passage resistance in the cooling mode is generally smaller than the passage resistance in the heating mode. Since the passage resistance increases at the time of mode switching, the air volume to the air-conditioning area A2 on the passenger seat side is kept constant by decreasing the air volume ratio to the second air passage 11 and increasing the air volume sent from the blower 6. .

  When the switching operation from the foot outlet 18 to the vent outlet 17 is performed in the air conditioning area A1 on the driver's seat side as in the control example (5) of FIG. 3, the passage resistance of the foot outlet 18 is generally the vent outlet. Since the passage resistance decreases when the outlet position is switched, the air distribution door 13 increases the air volume ratio to the second air passage 11 to reduce the amount of air sent from the blower 6. The air volume to the air conditioning area A2 on the passenger seat side is kept constant. Furthermore, when the switching operation from the foot outlet 18 to the differential outlet 19 is performed in the air conditioning area A1 on the driver's seat as in the control example (6) of FIG. 3, the passage resistance of the foot outlet 18 is generally the differential outlet. Since the passage resistance increases at the time of switching the air outlet position, the air flow rate to the second air passage 11 is decreased to increase the amount of air sent from the blower 6, so that the passenger seat side The air volume to the air conditioning area A2 is kept constant.

  In the present embodiment configured as described above, when the air-conditioning condition of the conditioned air supplied to the air-conditioning area A1 on the driver's seat side (air-conditioning air volume, temperature mode and outlet position) changes, the air-conditioning area on the passenger seat side It is possible to prevent the air volume fluctuation of the conditioned air supplied to A2.

  In addition, although the said embodiment demonstrated the case where the air-conditioning conditions of the air-conditioning wind supplied to the driver's seat side air conditioning area | region A1 changed, this invention is not limited to this, and the air conditioning supplied to the passenger seat side air conditioning area | region A2 The same applies to the case where the air-conditioning condition of the wind is changed. In this case, the air volume to the air-conditioning area A1 on the driver's seat side is kept constant, and fluctuations in the air-conditioning wind supplied to the air-conditioning area A1 can be prevented. .

  Furthermore, in the said embodiment, although the case where conditioned air was supplied to two air-conditioning area | regions A1 and A2 in a vehicle was illustrated, this invention is not restricted to this, When supplying conditioned air to three or more air-conditioning area | regions Is the same.

It is explanatory drawing of the air volume independent control air-conditioner unit in which the control method concerning one Embodiment of this invention is used. It is a flowchart which shows the process sequence at the time of controlling air volume independent control air-conditioner unit by the control method of this embodiment. It is a figure which shows the example of control of the air volume independent control air conditioner unit by the control method of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air volume independent control air conditioner unit 2 Blower part 3 Air conditioner part 4 Blowout part 5 Blower motor 6 Blower (blower)
DESCRIPTION OF SYMBOLS 8 Cylindrical case 9 Evaporator 10 1st ventilation path 11 2nd ventilation path 12 Partition wall 13 Air distribution door 13a Support shaft 13b Rotating piece 13c Control motor 14 Heater core 15, 16 Mix door 17 Vent outlet 18 Foot outlet 19 Differential outlet 20 Vent outlet 21 Foot outlet 22 Differential outlet 23 to 28 Outlet door 29 Controller 30 Calculation means A1 Air conditioning area on driver's seat side (first air conditioning area)
A2 Air-conditioning area on the passenger side (second air-conditioning area)

Claims (6)

A blower door (13) that blows air to a plurality of air passages (10, 11) with one blower (6) and adjusts the air distribution amount to these air passages (10, 11), and a plurality of air conditioning regions (A1) , A2) is an air volume independent control air conditioner unit (1) provided with a plurality of air outlets for blowing the air-conditioned air to the air-conditioning air, wherein the air volume control and temperature adjustment of the air-conditioning air and the air outlets (17 to 22) In the control method which performs switching control of each independently for each air-conditioning area (A1, A2),
Corresponding to a change in the air conditioning condition of the conditioned air supplied to the first air conditioned area among the plurality of air conditioned areas (A1, A2), the air volume of the conditioned air supplied to the other second air conditioned area is kept constant. And a controller (29) for changing the rotational speed of the blower (6).   The rotation speed of the blower (6) is changed so as to keep the air volume of the conditioned air supplied to the second air conditioned area constant in response to the change in the air volume of the conditioned air supplied to the first air conditioned area. The method of controlling an air volume independent control air conditioner unit (1) according to claim 1, wherein   In response to a change in the temperature mode of the conditioned air supplied to the first air conditioned area, the rotation speed of the blower (6) is changed so as to keep the air volume of the conditioned air supplied to the second air conditioned area constant. The method of controlling an air volume independent control air conditioner unit (1) according to claim 1, characterized in that it is configured as described above.   The blower (6) is configured to keep the air volume of the conditioned air supplied to the second air conditioned area constant in response to the change in the position of the air conditioned air outlet (17 to 22) supplied to the first air conditioned area. The method of controlling an air volume independent control air conditioner unit (1) according to claim 1, characterized in that the number of rotations is changed.   The controller (29) is provided with calculation means (30) for calculating the rotational speed of the blower (6) in response to a change in the air conditioning condition of the conditioned air supplied to the first air conditioning region. Control method of the air volume independent control air-conditioner unit (1) of Claim 1.   The calculating means (30) calculates the rotation speed of the blower (6) based on the rotation angle of the air distribution door (13) or the wind distribution door (13) based on the rotation speed of the blower (6). The method of controlling the air volume independent control air conditioner unit (1) according to claim 5, wherein the rotation angle of the airflow is calculated.

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