JP2014231985A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of inhibiting the influence on an air flow of a blower fan, particularly reducing pressure loss in an electric discharge/electric field generation device.SOLUTION: An air conditioner including a main body that includes an air intake port and an exhaust port, and a blower fan arranged leeward of the air intake port in the main body and forming an air flow for taking in air from the air intake port into the main body and discharging the air from the exhaust port, comprises: a heat exchanger provided leeward of the air intake port provided in the main body; and an electric discharge/electric field formation device provided windward of the heat exchanger on an air path of the air flow formed in the main body, and accommodating a discharge electrode and a counter electrode in a box-shaped frame having a windward opening surface and a leeward opening surface. The heat exchanger is arranged to have a generally inverse V-shaped or generally inverse W-shaped cross-section with an apex part directed toward the blower fan. The leeward opening surface of the frame is opposed to a windward end surface of the heat exchanger and arranged inclined so as to gradually increase a distance to the end surface from a side closer to the air intake port toward a side farther from the air intake side.

Description

  The present invention relates to an air conditioner.

  Conventionally, an air conditioner in which an electric dust collection type air purifying filter is mounted close to the windward side of a heat exchanger is known (see, for example, Patent Document 1). And in the electric dust collection type | formula air purifying filter mounted in such a conventional air conditioning apparatus, the charging filter used as a counter electrode is arrange | positioned substantially parallel to the windward end surface of a heat exchanger. Moreover, in the conventional electrostatic precipitator, in order to make an electrostatic precipitator thin, what was arrange | positioned inclining with respect to the ventilation direction is also known in order to make the counter electrode (ground electrode) of an ionization part (for example, Patent Document 2).

Japanese Patent Publication No. 06-074903 Japanese Patent No. 3605206

  By the way, there are several types of blower fans used in air conditioners, such as sirocco fans, propeller fans, and line flow fans. A fan type is appropriately selected. For example, although the sirocco fan is small and can obtain a high wind pressure, the air volume is slightly low, and the propeller fan is suitable for obtaining a relatively large air volume although the wind pressure is slightly low.

  And when a propeller fan is used as a blower fan of an air conditioner, the pressure loss when passing through an electrostatic precipitating filter, a discharge / electric field generator, a heat exchanger, etc., because the resulting wind pressure is relatively low The influence of will increase. The propeller fan is an axial fan that generates wind (air flow) in a direction parallel to the rotation axis of the fan, and the air flow velocity between the portion near the axis of the propeller fan and the blade (rotary blade) portion. There is also a characteristic that the flow rate is different.

  However, in the conventional air conditioner disclosed in Patent Document 1, the counter electrode (charging filter) of the electrostatic precipitator type air cleaning filter is disposed substantially at right angles to the direction of air flow, and pressure loss However, there is a problem that the air volume is reduced, noise is generated, and power consumption is increased. Moreover, the characteristics of the propeller fan as described above are not considered at all, and when a propeller type axial fan is used as the blower fan, the heat exchange efficiency in the heat exchanger, the heat exchanger and the discharge / discharge There is also a problem that the configuration is not appropriate considering the pressure loss in the electric field generating device. In addition, even when a line flow fan is used as the blower fan, there is a problem that the airflow from the blower fan is greatly affected.

  In the conventional electric dust collector shown in Patent Document 2, the case where the electric dust collector is mounted in the air conditioner is not taken into consideration, and the characteristics of the propeller fan as described above are also taken into consideration. It has not been. For this reason, when a propeller-type axial flow fan is used as the blower fan, the heat exchange efficiency in the heat exchanger, the heat exchanger, and the discharge / electric field generating device are similar to those described in Patent Document 1. There is a problem that no consideration is given to an appropriate configuration that takes pressure loss into consideration. The same applies to the case where a line flow fan is used as the blower fan.

  The present invention has been made to solve such a problem, suppresses the influence of the air flow of the blower fan, and improves the heat exchange efficiency in the heat exchanger, as well as the heat exchanger and the discharge / An air conditioner capable of reducing pressure loss in an electric field generating device and suppressing a reduction in air volume and noise is obtained.

  In the air conditioner according to the present invention, the main body having an air inlet and an air outlet is disposed on the leeward side of the air inlet in the body, and air is taken into the body from the air inlet and from the air outlet. An air conditioner having a blower fan for forming an air flow for discharging air, wherein the heat exchanger is provided on the lee side of the intake port in the main body, and the air flow in the main body. A discharge / electric field generating device that is provided on the windward side of the heat exchanger on the wind path, and in which a discharge electrode and a counter electrode are housed in a box-shaped frame having an opening surface on the windward side and the leeward side, and The heat exchanger is arranged in an inverted V-shaped cross-section or an inverted W-shaped cross-section with the apex portion facing the windward side, and the opening surface on the leeward side of the frame is a wind of the heat exchanger Opposite the upper end face and close to the inlet A structure in which the distance between said end surface is arranged inclined to spread gradually toward the side farther from the side.

  The air conditioner according to the present invention has an effect of suppressing the influence of the air flow of the blower fan, particularly reducing the pressure loss in the discharge / electric field generating device, and suppressing the decrease in the air volume and the generation of noise. .

It is sectional drawing of the air conditioning apparatus which concerns on Embodiment 1 of this invention. 1 is an exploded perspective view of a discharge / electric field generation device provided in an air-conditioning apparatus according to Embodiment 1 of the present invention. It is sectional drawing of the discharge and electric field generation apparatus with which the air conditioning apparatus which concerns on Embodiment 1 of this invention is provided. It is an expanded sectional view which shows the part which installed the discharge and electric field production | generation apparatus of the air conditioning apparatus which concerns on Embodiment 1 of this invention. It is a figure which shows the power consumption of the air conditioning apparatus at the time of changing the inflow angle of the wind with respect to the counter electrode of the discharge and electric field generation apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing of the other air conditioning apparatus which concerns on Embodiment 1 of this invention. It is an expanded sectional view which shows the part which installed the discharge and electric field production | generation apparatus of the other air conditioning apparatus which concerns on Embodiment 1 of this invention.

  The present invention will be described with reference to the accompanying drawings. Throughout the drawings, the same reference numerals indicate the same or corresponding parts, and redundant description thereof will be simplified or omitted as appropriate.

Embodiment 1 FIG.
1 to 5 relate to Embodiment 1 of the present invention, FIG. 1 is a cross-sectional view of an air conditioner, FIG. 2 is an exploded perspective view of a discharge / electric field generator included in the air conditioner, and FIG. 4 is a cross-sectional view of a discharge / electric field generation device provided in the air conditioner, FIG. 4 is an enlarged cross-sectional view showing a portion where the discharge / electric field generation device of the air conditioner is installed, and FIG. FIG. 6 is a cross-sectional view of another air conditioner, and FIG. 7 is a diagram illustrating a portion where a discharge / electric field generator of another air conditioner is installed. It is an expanded sectional view.

  In FIG. 1, 1 is an air conditioner main body. An air inlet 2 that is an opening for taking air from the outside into the air conditioner main body 1 is provided in the upper part of the air conditioner main body 1. In addition, an exhaust port 3 that is an opening for discharging air from the inside of the air conditioner main body 1 to the outside is provided at the lower front portion of the air conditioner main body 1. And in the air conditioning apparatus main body 1, the air path connected from the inlet port 2 to the exhaust port 3 is formed.

  The air is taken into the air conditioner body 1 from the air inlet 2 into the air path immediately downstream of the air inlet 2 in the air conditioner body 1, and the processed air is discharged from the air outlet 3 to the outside of the air conditioner body 1. A blower fan 4 for creating an air flow to be exhausted is installed. The blower fan 4 is a propeller type axial flow fan.

  A heat exchanger 5 is disposed on the leeward side of the blower fan 4 in the air conditioner body 1. The heat exchanger 5 is formed by combining two substantially flat plate-like portions so as to be arranged in a substantially inverted V-shaped cross section. Then, the substantially inverted V-shaped apex portion of the heat exchanger 5 is arranged facing the windward side, that is, the blower fan 4 side. In addition, the shape of this heat exchanger 5 is good also as a cross-section substantially reverse W shape other than a cross-section substantially reverse V shape. Furthermore, it may be a shape in which one or more portions having a substantially inverted V-shaped cross section are connected.

  A discharge / electric field generating device 6 is installed on the windward side of the heat exchanger 5 in the air conditioner main body 1 and on the leeward side of the blower fan 4. This discharge / electric field generating device 6 forms a discharge space and an electric field space in the air flowing through the air passage, and sterilizes / inactivates bacteria, molds, allergens, viruses, etc. present in the passing air. is there.

  The configuration of the discharge / electric field generating device 6 will be described in detail with reference to FIGS. A discharge electrode 7 and a counter electrode 8 are built in the discharge / electric field generating device 6. A voltage is applied between these electrodes to cause corona discharge, and a discharge space and an electric field space are generated in the air. The discharge electrode 7 and the counter electrode 8 are accommodated in a box-shaped frame including an upper frame 9 and a lower frame 10 made of resin.

  The upper surface of the upper frame 9 and the lower surface of the lower frame 10 are arranged substantially parallel when the upper frame 9 and the lower frame 10 are assembled in a box shape. And the opening part for taking in the air which flows through an air path in a frame is provided in the upper surface of these upper frames 9, and the lower surface of the lower frame 10, respectively. Hereinafter, the upper surface of the upper frame 9 provided with the opening and the lower surface of the lower frame 10 may be referred to as an “opening surface”. In these openings, lattice guards are provided to prevent foreign matter from touching the discharge electrode 7 and the counter electrode 8 accommodated in the frame.

  A conductor is used as the material of the discharge electrode 7 and the counter electrode 8. Specifically, metals such as tungsten, copper, nickel, zinc, and iron, or alloys such as stainless steel containing these metals as main components, or silver, gold, platinum, etc. on the surface of these metals or alloys These are plated with noble metals.

  The discharge electrode 7 has an elongated plate shape (in other words, a flat string shape), and its cross-sectional shape is a substantially rectangular shape having a short side and a long side. The length of the long side of the substantially rectangular shape of this cross-sectional shape is 0.1 to 1.0 mm, and the length of the short side is about 1/10 of the length of the long side, that is, 0.01 to 0.1 mm. It is.

  Further, ring-shaped terminals are attached to both ends of the discharge electrode 7 in the longitudinal direction. These ring-shaped terminals are attached with metal springs 11 that urge the discharge electrodes 7 so as to give tension. Connection portions between the ring-shaped terminals at both ends of the discharge electrode 7 and the springs 11 are attached to a metal power supply unit 12. The power supply unit 12 is connected to a power supply (not shown), and a voltage of 4 kV to 7 kV is supplied to the discharge electrode 7 from the power supply via the power supply unit 12. The counter electrode 8 is grounded.

  In the upper frame 9 and the lower frame 10, the discharge electrode 7 is folded back and attached about 2 to 4 times (here, twice). The electrode surface 8 a of the counter electrode 8 is disposed to face the discharge electrode 7. At this time, the electrode surface 8a of the counter electrode 8 is disposed so as to be inclined by a predetermined first angle θ1 with respect to the opening surfaces of the frames (the upper frame 9 and the lower frame 10) (see FIG. 3). ). By disposing the discharge electrode 7 so that the short side of the cross-sectional shape is on the windward side, it is possible to reduce the pressure loss of the air flow passing through the discharge / electric field generating device 6.

  The discharge electrode 7 and the counter electrode 8 are fixed by the resin-made right electrode support member 13 and the left electrode support member 14 in the arrangement and state as described above in the frame (the upper frame 9 and the lower frame 10).

  Here, the two surfaces of the front side surface 15 and the rear side surface 16 of the frame (the upper frame 9 and the lower frame 10) are provided so as to be inclined by a predetermined second angle θ2 with respect to the opening surface of the frame. Yes. The first angle θ1 and the second angle θ2 are substantially the same. In other words, the electrode surface 8a of the counter electrode 8 and the front side surface 15 and the rear side surface 16 of the frame are substantially parallel. A handle portion 9 a is provided on the front surface of the upper frame 9 for gripping the discharge / electric field generation device 6 when the discharge / electric field generation device 6 is attached to or detached from the air conditioner main body 1.

The arrangement of the discharge / electric field generating device 6 configured as described above in the air conditioner body 1 will be described with reference to FIG.
First, the discharge / electric field generating device 6 is disposed on the windward side of the heat exchanger 5 and on the leeward side of the blower fan 4 as described above. The opening surface on the leeward side of the frame of the discharge / electric field generating device 6 faces the end surface on the leeward side of the heat exchanger 5 and is arranged substantially in parallel. Alternatively, the opening surface is opposed to the end surface, and the distance between the opening surface and the end surface gradually increases toward the handle portion 9a side (the side far from the blower fan 4). The opening surface is inclined with respect to the end surface.

  Here, since the blower fan 4 is a propeller-type axial fan, the air flow generated by the blower fan 4 is parallel to the rotational axis of the blower fan 4, that is, the lower surface of the blower fan 4 (in FIG. 4). 4A and 4B in FIG. 4 orthogonal to A) of FIG.

  As described above, the heat exchanger 5 is arranged in a substantially V-shaped cross section with the apex portion facing the windward side. Although not shown in the drawings, the heat exchanger 5 is arranged in a substantially inverted V shape in cross section, and in addition to a substantially inverted V shape in cross section, two substantially inverted V shapes are connected in order to increase the amount of heat exchange. It is good also as a shape. The angle formed by the windward end face of the heat exchanger 5 at this time and the direction of the air flow generated by the blower fan 4 (B in FIG. 4) is the pressure loss of the air flow or the air flow and the heat exchanger 5. Is determined in consideration of the surface area of contact with each other, heat exchange efficiency, and the like.

  The end surface on the leeward side of the heat exchanger 5 determined in this way and the opening surface on the leeward side of the frame of the discharge / electric field generating device 6 are substantially parallel or gradually spaced from each other toward the handle portion 9a. The electrode surface 8a of the counter electrode 8 is provided so as to be inclined by the first angle θ1 in the direction of the air flow from the blower fan 4 with respect to the opening surface. . Therefore, the electrode surface 8a of the counter electrode 8 is disposed so as to be inclined by a predetermined third angle θ3 with respect to the direction of air flow from the blower fan 4 (B in FIG. 4). In addition, this 3rd angle (theta) 3 is an angle which the cross section of the electrode surface 8a makes with respect to the direction of the airflow from the ventilation fan 4 on the cross section orthogonal to the electrode surface 8a more correctly.

  Because of the relationship as described above, the third angle θ3 is defined by the angle formed by the windward end face of the heat exchanger 5 and the direction of the air flow from the blower fan 4 and the discharge / electric field generating device 6. It is possible to uniquely derive from the angle formed by the opening surface on the leeward side of the frame and the end surface on the windward side of the heat exchanger 5 (fourth angle θ4 described later) and the first angle θ1. That is, when the angle formed by the windward end surface of the heat exchanger 5 and the direction of the air flow from the blower fan 4 is given, the angle formed by the electrode surface 8a and the opening surface of the discharge / electric field generating device 6 is By changing a certain first angle θ1 and an angle (fourth angle θ4) formed by an opening surface on the leeward side of the frame of the discharge / electric field generating device 6 and an end surface on the leeward side of the heat exchanger 5, The third angle θ3 that is the inclination angle of the electrode surface 8a of the counter electrode 8 with respect to the direction of airflow from the fan 4 can be adjusted.

  The operation of the air conditioner body 1 configured as described above will be described with reference to FIGS. 1 and 4 mainly focusing on the air flow in the air conditioner body 1. In these drawings, arrows indicate the air flow in the air passage formed in the air conditioner body 1. When the blower fan 4 is rotated, air is taken into the air conditioner main body 1 from the intake port 2, and the air flow generated by the blower fan 4 is sent to the heat exchanger 5. At this time, the blower fan 4 is a propeller type axial flow fan. In particular, in the portion close to the blower fan 4, the axial flow rate is relatively slow, and the outer flow rate with the rotor blades is relatively fast.

  The heat exchanger 5 is arranged in a substantially inverted V-shaped cross section with the apex portion facing the blower fan 4, and the substantially inverted V-shaped apex portion is at a position facing the rotation axis of the blower fan 4. . Since the blower fan 4 and the heat exchanger 5 are in such a positional relationship, a relatively fast part of the air flow generated by the blower fan 4 is efficiently sent to the heat exchanger 5. be able to. And the airflow which passed the heat exchanger 5 becomes one inside the said substantially reverse V shape, and is discharged | emitted from the exhaust port 3 to the exterior of the air conditioning apparatus main body 1. FIG.

  A discharge / electric field generating device 6 is installed on the wind path on the windward side of the heat exchanger 5 and on the leeward side of the blower fan 4. Bacteria, fungi, viruses, etc. floating in the air are sucked into the air conditioner main body 1 by the blower fan 4. When the sucked floating bacteria, mold, virus, etc. pass through the discharge / electric field generating device 6, a discharge and electric field applied between the discharge electrode 7 and the counter electrode 8 are applied, and are destroyed and killed. Living airborne bacteria, fungi, viruses and the like are removed from the air exhausted from the exhaust port 3.

  Here, when a propeller-type axial flow fan is arranged as the blower fan 4 on the upstream side of the heat exchanger 5, the sucked air is pushed into the heat exchanger 5, so that a propeller-type fan is placed on the downstream side of the heat exchanger 5. Compared to the case where an axial fan is disposed and air is drawn into the heat exchanger 5, the wind speed distribution is non-uniform on the upstream side of the heat exchanger 5 and the wind speed is easily increased and weakened. There is a problem that the pressure loss when passing through 6 increases. In particular, the wind speed distribution is larger in the vicinity of the outside of the blower fan 4 than in the central part in the vicinity of the shaft of the blower fan 4.

  Since there is a large space between the front surface side of the substantially inverted V-shaped heat exchanger 5 and the front panel of the air conditioner main body 1, it is suitable for installing the discharge / electric field generating device 6. However, since the position is located downstream of the blower fan 4 (portion where the fan fan blades are located), the wind speed distribution is uneven and the wind speed is likely to be strong and weak. There is also a problem that stable air cleaning ability cannot be exhibited due to variations in wind speed.

  Here, the opening surface on the leeward side of the frame of the discharge / electric field generating device 6 is arranged to face the end surface on the leeward side of the heat exchanger 5, and the electrode surface 8 a of the counter electrode 8 of the discharge / electric field generating device 6 is And a predetermined first angle θ1 with respect to the opening surface of the frame of the discharge / electric field generating device 6 and a predetermined first angle with respect to the direction of air flow from the blower fan 4 (B in FIG. 4). 3 is inclined at an angle θ3. The opening surface on the windward side of the frame of the discharge / electric field generating device 6 is also arranged substantially parallel to the end surface on the windward side of the heat exchanger 5 and is inclined with respect to the direction of airflow from the blower fan 4.

  For this reason, the air flow from the blower fan 4 can flow into the discharge / electric field generating device 6 without resistance, and the air can flow in a state where the generation of pressure loss is reduced. Accordingly, generation of noise can be suppressed and increase in power consumption can be suppressed.

  FIG. 5 shows the increase in power consumption of the air conditioner main body 1 when the third angle θ3 that is the inclination angle of the electrode surface 8a of the counter electrode 8 with respect to the direction of the air flow from the blower fan 4 is changed. It is shown. As shown in FIG. 5, when the third angle θ3 is 90 °, the amount of increase in power consumption is about 7W. When the third angle θ3 is set to 60 °, the increase in power consumption is reduced to about 2.5W. Further, when the third angle θ3 is set to 45 °, the increase in power consumption is reduced to about 1W. When the third angle θ3 is 20 °, the amount of increase in power consumption is less than about 0.5 W, which has almost no influence on aerodynamic performance and does not increase fan input. The third angle θ3 that is the inclination angle of the electrode surface 8a of the counter electrode 8 with respect to the direction of the air flow from the blower fan 4 is preferably small, and most preferably 0 °.

  Thus, the amount of increase in power consumption of the air conditioner main body 1 can be suppressed to about 1 W or less by setting the third angle θ3 to 45 ° or less. Therefore, it is preferable to set the first angle θ1 so that the third angle θ3 is 45 ° or less.

  However, if the first angle θ1 is inclined to 45 ° or more, the shortest distance between the discharge electrode 7 and the counter electrode 8 is shortened and local discharge occurs. Further, since the distance between the electrodes from the discharge electrode 7 to the counter electrode 8 is not uniform, stable discharge cannot be performed. Therefore, it is preferable to arrange the first angle θ1 to be 45 ° or less.

  Thus, if the tilt angle (third angle θ3) of the counter electrode 8 is made parallel to the air flow direction by tilting the first angle θ1, pressure loss can be reduced, but the first angle θ1. In some cases, the pressure loss may still be large even when tilted.

  In such a case, as shown in FIG. 6, the opening surface on the leeward side of the frame of the discharge / electric field generating device 6 is further set to a predetermined fourth angle with respect to the end surface on the leeward side of the heat exchanger 5. Inclination is made in the direction of the intake port 2 by θ4. The state where the opening surface on the leeward side of the frame of the discharge / electric field generating device 6 is inclined in the direction of the intake port 2 by a predetermined fourth angle θ4 with respect to the end surface on the windward side of the heat exchanger 5 is FIG. 7 illustrates the distance relationship with the end face.

  As shown in FIG. 7, the shortest distance L between the opening surface on the leeward side of the frame of the discharge / electric field generating device 6 and the end surface on the windward side of the heat exchanger 5 is close to the axial side of the blower fan 4 and the blower fan 4. When the distance L1 at a position far from the outside of the fan is compared with the distance L2 at a position near the outside of the blower fan 4 and far from the axial side of the blower fan 4, L1 is less than or equal to L2.

  By doing so, the angle θ3 formed between the counter electrode 8 of the discharge / electric field generating device 6 and the air flow can be reduced to approach 0 °, pressure loss can be reduced, and an increase in power consumption of the blower fan 4 can be suppressed. Is possible. Moreover, the nonuniformity of the wind speed distribution in the outer portion of the blower fan 4, which is a problem specific to the propeller fan, can be eliminated, and the heat exchange efficiency at the upstream side of the heat exchanger 5 can be improved.

  Here, normally, when air is sucked in from the top surface side of the air conditioner main body 1, the air travels in a substantially vertical direction. Since the upper front unit of the heat exchanger 5 is inclined by about 30 to 45 ° with respect to the vertical direction, when the discharge / electric field generating device 6 is installed in parallel with the heat exchanger 5, the discharge / electric field generating device 6 If the counter electrode 8 is arranged perpendicularly to the opening surface of the air flow, the air flow direction B and the counter electrode 8 are displaced by an angle of about 30 to 45 °, and therefore pass through the discharge / electric field generating device 6. Pressure loss occurs in the air flow.

  In order to reduce the pressure loss, it is preferable to make the angle (third angle θ3) formed by the counter electrode 8 and the air flow B as small as possible. Therefore, as described above, the counter electrode 8 is disposed so as to be inclined from the direction perpendicular to the opening of the discharge / electric field generating device 6, and the discharge / electric field generating device 6 is disposed in the heat exchanger 5. On the other hand, it inclines in the inlet 2 direction. Then, due to the synergistic effect of these inclined arrangements, the angle θ3 formed by the counter electrode 8 and the air flow B is maintained while maintaining a stable discharge state between the discharge electrode 7 and the counter electrode 8 in the discharge / electric field generating device 6. It becomes possible to make it as small as possible.

  That is, the greater the angle at which the counter electrode 8 is inclined from the direction perpendicular to the opening of the discharge / electric field generating device 6, the lower the stability of discharge between the discharge electrode 7 and the counter electrode 8. When the angle at which the discharge / electric field generating device 6 is inclined with respect to the heat exchanger 5 in the direction of the inlet 2 (lifting the front side of the discharge / electric field generating device 6) is increased, the front surface of the discharge / electric field generating device 6 is increased. The tip on the side comes into contact with the structure of the air conditioner main body 1, and the discharge / electric field generating device 6 cannot be stored on the windward side of the heat exchanger 5.

  Therefore, the first angle θ1 is set to 45 ° or less (preferably about 15 to 30 ° for the purpose of making the distance between the poles as uniform as possible and stabilizing the discharge), and further to the inlet 2 side of the discharge / electric field generating device 6. By setting the inclination angle θ4 to about 5 to 20 °, the synergistic effect of these inclination arrangements makes the angle formed between the counter electrode 8 and the air flow B closest to 0 ° while maintaining the air cleaning ability stable. Can do.

  In addition, the second angle θ2 that is an angle formed by the front side surface 15 and the rear side surface 16 of the frame of the discharge / electric field generating device 6 and the direction perpendicular to the opening surface of the frame is the same as the first angle θ1. is there. That is, the front side surface 15 and the rear side surface 16, which are the two side surfaces of the frame, and the electrode surface 8a are disposed substantially in parallel, and the front side surface 15 and the rear side surface 16 of the frame serve as walls to reduce pressure loss. Without generating, it is possible to reduce the pressure loss in the air flow flowing inside and outside the discharge / electric field generating device 6. Moreover, the effect of smoothly flowing an air flow into the heat exchanger 5 is also exhibited.

  Further, by making the openings of the frame of the discharge / electric field generating device 6 into a lattice shape, a rectifying effect is produced, and a wind speed distribution that tends to occur near the outside of the propeller type axial fan or near the outer peripheral portion of the air conditioner main body 1 Unevenness and strength of wind speed can be reduced.

  In addition, by installing the discharge / electric field generation device 6 downstream of the propeller type axial fan and upstream of the heat exchanger 5, the discharge / electric field generation device 6 itself has the function of a rectifying plate, It is possible to eliminate the swirl flow component generated by the propeller type axial fan by making the wind speed distribution uniform, and to improve the heat exchange efficiency on the upstream side of the heat exchanger 5 by about 1 to 3%.

  In summary, the electrode surface 8a of the counter electrode 8 of the discharge / electric field generation device 6 is directed toward the air flow direction of the blower fan 4 with respect to the opening surface on the leeward side of the frame of the discharge / electric field generation device 6. The direction of the intake port is inclined by a predetermined angle θ1 and the opening surface on the leeward side of the frame of the discharge / electric field generating device 6 is inclined by a predetermined angle θ4 with respect to the end surface on the windward side of the heat exchanger 5. The angle θ3 formed between the direction B of the air flow from the blower fan 4 and the counter electrode 8 further approaches 0 ° and becomes very small. Therefore, pressure loss can be minimized and power consumption in the blower fan 4 can be minimized.

  In the above description, the case where a propeller type axial flow fan is used as the blower fan 4 has been mainly described. However, even when another fan such as a line flow fan is used as the blower fan 4, the intake port 2 is not particularly limited. In the case of the configuration arranged on the upper part of the air conditioner main body 1, the same effect can be obtained.

  The air conditioner configured as described above is disposed on the leeward side of the main body having the air inlet and the air outlet and the air inlet in the body, takes air from the air inlet into the body, and draws air from the air outlet. An air conditioner having a blower fan that forms an air flow to be discharged, and a heat exchanger provided on the lee side of the intake port in the main body, and heat exchange on the air flow path in the main body A discharge / electric field generating device, which is provided on the windward side of the vessel and contains a discharge electrode and a counter electrode inside a box-shaped frame having opening surfaces on the windward side and leeward side, respectively, and the heat exchanger is , The apex portion is arranged in a substantially inverted V-shaped cross section or a substantially inverted W-shaped cross section facing the blower fan side, and the opening surface on the leeward side of the frame of the discharge / electric field generating device is on the windward side of the heat exchanger Opposite to the end face and inclined with respect to the direction of air flow of the blower fan Are those arranged.

  For this reason, the angle formed between the counter electrode and the air flow direction is close to 0 °, and the pressure loss at the counter electrode can be reduced to reduce the power consumption of the blower fan. In addition, the air velocity distribution in the discharge / electric field generating device can be made uniform to exhibit a stable air cleaning capability. Furthermore, the wind velocity distribution downstream of the discharge / electric field generating device can be made uniform, and the heat exchange efficiency on the upstream side of the heat exchanger disposed downstream of the discharge / electric field generation device can be improved.

  The present invention provides a main body having an intake port and an exhaust port, and a blower that is arranged on the leeward side of the intake port in the main body and forms an air flow that takes air from the intake port into the main body and exhausts air from the exhaust port. And an air conditioner equipped with a fan. As a specific example, it can be applied to products such as an air conditioner, a hand dryer, an air purifier, a humidifier, a dehumidifier, and a refrigerator.

  DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus main body, 2 Intake port, 3 Exhaust port, 4 Blower fan, 5 Heat exchanger, 6 Discharge / electric field generator, 7 Discharge electrode, 8 Counter electrode, 8a Electrode surface, 9 Upper frame, 9a Handle part, 10 Lower frame, 11 Spring, 12 Power feeding part, 13 Right electrode support member, 14 Left electrode support member, 15 Front side of frame, 16 Rear side of frame

Claims (4)

A main body having an intake port and an exhaust port, and disposed on the leeward side of the intake port in the main body, and forms an air flow that takes air from the intake port into the main body and discharges air from the exhaust port. An air conditioner having a blower fan,
A heat exchanger provided on the leeward side of the intake port in the main body;
A discharge electrode and a counter electrode are accommodated inside a box-shaped frame provided on the windward side of the heat exchanger on the airflow path of the air flow in the main body and having an opening surface on the windward side and the leeward side, respectively. A discharge / electric field generating device,
The heat exchanger is arranged in an inverted V-shaped cross section or an inverted W-shaped cross section with the apex portion facing the windward side,
The opening surface on the leeward side of the frame faces the end surface on the leeward side of the heat exchanger, and the distance from the end surface gradually increases as the distance from the side closer to the intake port increases. An air conditioner arranged at an angle.   The discharge electrode has a rectangular shape having a short side and a long side in cross-sectional shape, and the long side is arranged so as to be perpendicular to the opening surface on the leeward side of the frame. Item 2. The air conditioner according to Item 1.   The air conditioner according to claim 1 or 2, wherein a front side surface and a rear side surface of the frame are arranged in parallel with an electrode surface of the counter electrode. The heat exchanger is arranged in an inverted V-shaped cross section with the apex portion directed to the blower fan side
The air conditioner according to any one of claims 1 to 3, wherein the apex portion having the inverted V-shaped cross section is disposed at a position facing a rotation shaft of the blower fan.

Images