JPH087302Y2 - Air conditioner filter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for an air conditioner in which the position of a filter is controlled according to the state of introduced air so that required air can be smoothly introduced and the air can be precisely cleaned.

[0002]

2. Description of the Related Art For example, in an air conditioning system for vehicles, an actual air conditioner 63
As in Japanese Patent Laid-Open No. 13320, a filter for air cleaning is generally installed in the air passage between the blower unit and the cooling unit. However, in the so-called fixed type as in the above publication, the filter is installed in the air passage. Since it is fixedly installed, there is a problem that if the air volume of the blower unit is increased, the ventilation resistance increases, and the desired air conditioning feeling cannot be obtained quickly. For this reason, for example, in Japanese Utility Model Laid-Open No. 62-177512, a pair of filters is rotatably installed in the air passage, and these are rotated according to the air volume of the blower unit.

[0003]

Therefore, although the problem of ventilation resistance can be solved by the above-mentioned one, in this one, a pair of filters are positioned on the same plane, and the air is passed through a single-layered filter so that the air is passed through the filter. Since cleaning is performed, there is a problem that precise air cleaning cannot be applied.

The present invention solves such a problem, the position of the filter is variably controlled according to the state of the introduced air, and the desired air can be introduced smoothly and the filter can be precisely cleaned. The purpose is to provide.

[0005]

Therefore, the air conditioner filter of the present invention is a filter for an air conditioner in which a plurality of filters are rotatably installed in the air passage between the blower unit and the cooling unit. The above filter
The rotation angle is controllable according to the air introduction mode, the degree of pollution, and the amount of air introduced, and a part of the filter is placed so that it can overlap when a certain amount of air is introduced. It is characterized in that desired air can be introduced smoothly and promptly by control, and precise cleaning can be performed when a predetermined air is introduced.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a description will be given of an illustrated embodiment in which the present invention is applied to a vehicle air conditioner. In FIG. 1 to FIG. 4, reference numeral 1 is a blower duct, and an outside air port 2 and an inside air port 3 are provided upstream thereof. These can be opened and closed by the inside / outside air switching door 4. A blower fan 5 that constitutes a blower unit is provided on the downstream side of the inside and outside air ports 2 and 3, and an evaporator 6 that constitutes a cooling unit is provided on the downstream side of the fan 5.
Are installed, and a plurality of filters 8a, 8b, 8c are provided in the air passage 7 between them as actuators (not shown).
It is provided so as to be rotatable synchronously.

The filters 8a, 8b and 8c are formed in the same shape as shown in FIG. 2, and they are divided into rectangles through a filter frame (not shown), and a shaft 9 linked to the actuator is rotated in the center thereof. It is movably installed. These shafts 9 are arranged in parallel with each other with a space between them,
In the precise air cleaning mode of a, 8b, 8c, that is, when the air is introduced in the internal air circulation mode, or when the introduced air is contaminated more than the standard in the outside air introduction mode, the actuator is driven, 3 (a), the filter 8b arranged at the end has both side pieces of the filter 8b arranged in the middle.
By superimposing on the inner side pieces of a and 8c, cleaning can be performed in the entire cross section of the air passage 7, and cleaning in the central area of the cross section of the air passage can be performed more accurately than in the end area. In this case, a known gas sensor is used in the embodiment as a means for detecting the contamination of the introduced air.

Further, when the degree of pollution of the introduced air is below the standard in the normal air cleaning by the filters 8a, 8b, 8c, that is, in the outside air introduction mode, and the blow rate by the blower fan 5 is below the maximum blow rate. By driving the actuator, each of the filters 8a, 8b, 8c is positioned at a predetermined angle with respect to the air blowing direction as shown in FIG. 3B, and most of the introduced air can be cleaned.

Further, when the filters 8a, 8b, 8c are in the maximum air volume mode, that is, in the outside air introduction mode, the degree of contamination of the introduced air is below the standard, and the blower fan 5 blows the air at the maximum air volume, the actuator is driven. Then, the respective filters 8a, 8b, 8c are positioned substantially in the same direction as the air blowing direction as shown in FIG. 3C, so that the entire amount of the introduced air can be introduced in an unclean state.

Such filter control is performed by the control routine shown in FIG. 4, and the control content is stored in a control unit (not shown) installed in a proper place of the vehicle. In this case, the air introduction mode is detected by, for example, the operation of a drive actuator (not shown) of the switching door 4, the maximum air volume is detected by, for example, the rotation speed of the blower motor 10, and the contamination degree of the introduced air is further detected. Is detected by the gas sensor described above, and these detection signals are input to the control unit, and the control described above can be executed on the condition of these inputs. In addition,
Although each of the filters 8a, 8b, 8c is driven by an actuator in the above-described embodiment, it is also possible to connect them to a wire and operate them mechanically or manually.

[0011]

In the air-conditioning system filter thus constructed, a plurality of filters 8a, 8b, 8c are installed in the air passage 7 between the blower fan 5 and the evaporator 6 so as to rotate synchronously, and their shafts 9 are provided. The actuator is linked with the actuator, and its structure is simpler than that of the conventional one.

Next, when the air introduced into the vehicle compartment is actually cleaned using the filters 8a, 8b, 8c, the switching door 4 is operated with the start of operation of the air conditioner, and the inside / outside air outlets 3, 2 are Is opened and closed, the blower motor 10 is driven to rotate the blower fan 5, and air is introduced into the blower duct 1 from one of the opened inside / outside air ports 3 and 2 and is sent out to the evaporator 6 side. .

When the air conditioner is operated in this way, control operation by a control unit (not shown) becomes possible, and the control operation shown in FIG. 4 is started based on the stored routine.

That is, an operation signal of a drive actuator (not shown) of the switching door 4, a rotation speed detection signal of the blower motor 10, and a contamination degree detection signal of the introduced air by the gas sensor are input to the control unit. Of these, when the inside air circulation mode of the introduced air is detected via the actuator, the filter driving actuator is driven, and the filters 8a, 8b, 8c are synchronously rotated, and these are moved as shown in FIG. As described above, it is arranged substantially at right angles to the blowing direction and is positioned in the entire cross section of the air passage 7.
Therefore, the entire amount of air introduced into the inside air passing through the air passage 7 is cleaned.

Moreover, in this case, the filters 8a, 8
Of the b and 8c, both side pieces of the filter 8b arranged in the middle are superposed on the inner side pieces of the filters 8a and 8c arranged outside thereof, and two layers of air cleaning parts are formed at the front and rear, thereby The mesh becomes relatively fine and the air passage area becomes relatively narrow. Therefore, the filter 8
The air passing through the polymerization zones of a, 8b and 8c is precisely cleaned, which is suitable for the internal air circulation mode in which cotton dust and the like are easily mixed. In this case, in the inside air circulation mode, the blowing speed of the blower fan 5 is generally adjusted to a low speed, and thus the blowing amount is adjusted to a relatively small amount, so that the ventilation resistance of the filters 8a, 8b, 8c can be suppressed.

On the other hand, when not in the internal air circulation mode, that is, in the external air introduction mode, the operation mode of the filter 8 is selected according to the degree of contamination of the introduced air. That is, when the outside air, which is the introduced air, is contaminated more than the standard, the filters 8a, 8b, 8c are set in the precision air cleaning mode as described above, and the introduced air is precisely cleaned.

Further, when the outside air, which is the introduced air, is not contaminated more than the standard, the operation mode of the filter 8 is selected depending on the amount of air blown by the blower fan 5. That is, if the air flow rate is maximum, the maximum air volume mode is selected,
In this case, the filters 8a, 8b and 8c are shown in FIG.
As described above, the air flow direction is set to be substantially the same as the air flow direction. Therefore, in this case, each of the filters 8a, 8b, 8c opens the air passage 7 and minimizes the ventilation resistance, so that a relatively large amount of relatively clean air is smoothly introduced and the desired air conditioning feeling is promptly obtained. Is formed.

On the other hand, when the air flow rate is less than the maximum air flow rate, the normal mode is selected. In this case, each filter 8a,
As shown in FIG. 3B, 8b and 8c are set at a constant angle with respect to the blowing direction. Therefore, in this case, each of the filters 8a, 8b, 8c slightly opens the air passage 7 and suppresses the ventilation resistance thereof, so that most of the relatively clean air passes through the filters 8a, 8b, 8c and is cleaned. , Part of the air passes between the filters 8a, 8b, 8c and is introduced in an unclean state.

As described above, according to the present invention, when a large amount of dust or dust is mixed in or the introduced air is highly probable,
Set the filters 8a, 8b, 8c in the precision mode to achieve precise cleaning of the introduced air, and when the introduced air is not so polluted, the ventilation resistance is reduced by the filters 8a, 8b, 8c. The required amount of air is introduced smoothly.

[0019]

As described above, the air conditioner filter of the present invention is provided with a plurality of filters so that the rotation angle can be controlled according to the air introduction mode, the degree of pollution, and the amount of air introduced. With this, the position of the filter can be variably controlled, and the ventilation resistance at that time can be adjusted, so that desired air can be introduced smoothly and promptly, and a comfortable air conditioning feeling can be promptly obtained. Further, in the present invention, since a part of the filter is arranged so that it can be polymerized at the time of introducing a predetermined air, for example, a large amount of dust or dust is mixed, or there is a high probability that the outside air is introduced in the inside air circulation mode or the outside air introduction mode. When the contamination is remarkable, it has a practical effect that the introduced air can be precisely cleaned.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the present invention.

FIG. 3 is an explanatory view showing a usage state of the present invention, and FIG.
Shows the usage of the precision mode, FIG. 7B shows the usage of the normal mode, and FIG. 7C shows the usage of the maximum air volume mode.

FIG. 4 is a flowchart showing a control routine of each filter of the present invention.

[Explanation of symbols]

 7 Air passage 8a, 8b, 8c Filter

Claims (1)

[Scope of utility model registration request] 1. A filter for an air conditioner in which a plurality of filters are rotatably installed in an air passage between a blower unit and a cooling unit, wherein the filter is adapted to an air introduction mode, a pollution degree and an introduction amount. A filter for an air conditioner, wherein the rotation angle is controllable so that a part of the filter is superposed when a predetermined air is introduced.