JP2021127913A - Air conditioner - Google Patents

Abstract

To provide an air conditioner which minimizes the entry of dust, and which can keep the inside clean.SOLUTION: An air conditioner includes an indoor unit 50 which stores an indoor side heat exchanger 54 and an indoor side blower 56 inside an indoor unit body 52. The indoor unit body 52 includes: a suction port 55 opening so as to suck the air; and a blowout port 57 opening so as to blow out the air. The indoor side heat exchanger 54 is arranged between the suction port 55 and the indoor side blower 56. Between the suction port 55 and the indoor side heat exchanger 54, a mesh-like first prefilter 80 and a second prefilter 82, and a first air cleaning filter 90 and a second air cleaning filter 92 for cleaning the air which is sucked via the suction port 55 are arranged. The first air cleaning filter 90 and the second air cleaning filter 92 are provided corresponding to the entire region of the opening forming the suction port 55.SELECTED DRAWING: Figure 4

Description

The present invention relates to an air conditioner.

Conventionally, there has been an air conditioner equipped with a dust collecting filter for removing dust and an air purifying filter for removing dust having finer particles than the dust collecting filter facing the suction port.

For example, the air conditioner of Patent Document 1 has a suction port that takes in indoor air, a heat exchanger that exchanges heat with the air sucked from the suction port, and dust in the air arranged in front of the heat exchanger. A dust collection filter that collects dust, an air cleaning filter that is locked to the dust collection filter and collects finer dust than the dust collection filter, and a dew condensation water that flows down the heat exchanger and guides it downward. It is provided with a dew receiving portion for preventing water leakage from the front side, and an extending portion extending from the dew receiving portion between the air cleaning filter and the heat exchanger and facing the central portion of the air cleaning filter. Has been done.

Japanese Unexamined Patent Publication No. 2008-286427

However, in the air conditioner of Patent Document 1, the air purifying filter does not cover all the suction ports. Therefore, in the air conditioner, there is a high possibility that dust that cannot be collected by the dust collection filter enters the inside.

Therefore, an object of the present invention is to provide an air conditioner capable of minimizing the intrusion of dust and keeping the inside clean.

(1) The air conditioner of the present invention has an indoor unit in which a heat exchanger and a blower are housed inside the main body of the indoor unit, and the main body of the indoor unit has a suction port opened so as to be able to suck in air and air. It has an air outlet that is open so that air can be blown out, and the heat exchanger is arranged between the suction port and the blower, and a mesh shape is formed between the suction port and the heat exchanger. The pre-filter and the air cleaning filter for purifying the air sucked through the suction port are arranged, and the air cleaning filter is provided corresponding to the entire area of the opening forming the suction port. It is characterized by.

In the air conditioner of the present invention, a mesh-shaped pre-filter and an air purifying filter for air purifying are arranged between a suction port and a heat exchanger. Further, in the air conditioner of the present invention, an air purifying filter is provided corresponding to the entire area of the opening forming the suction port. Therefore, in the air conditioner of the present invention, even if dust passes through the pre-filter, there is a high possibility that it can be captured by the air purifying filter. Therefore, the air conditioner of the present invention can minimize the possibility of dust entering the inside of the indoor unit body as compared with the air purifying filter, and can keep the inside clean.

Here, as a result of diligent studies by the present inventors, when a structure in which all the suction ports are covered with a dust collecting filter is adopted as described above, pressure loss and noise increase, air suction performance, decrease in blowing speed, etc. It was found that it is desirable to take some measures to prevent this from happening.

(2) Based on such findings, in the air conditioner of the present invention, a part or all of the air purifying filter is pleated with a plurality of creases and curved so as to separate from the heat exchanger. Alternatively, it is preferable that the shape is bent.

According to such a configuration, the area related to the collection of dust in the air cleaning filter is increased, and the increase in pressure loss and noise can be suppressed. Further, according to the above-described configuration, the air suction performance can be improved and the decrease in the blowing speed can be suppressed.

Here, pleats having a plurality of creases are capable of collecting dust floating in the room, pollen, mite dung, mold spores, fine dust, house dust, and the like. If an air purifying filter is provided, it is expected that the pressure loss when sucking air will increase accordingly. On the other hand, even when a pleated air cleaning filter is provided, the pressure loss is lower in the bent shape portion (bending shape portion) in which the air cleaning filter is curved or bent than in other parts. , The air volume increases. Therefore, when a part or all of the air purifying filter is pleated with a plurality of creases and has a bent shape portion, the refrigerant is preferentially applied to the portion corresponding to the bent shape portion in the heat exchanger. It is considered that the heat exchange efficiency can be improved by flowing the air as compared with the case without such a structure.

(3) The air conditioner of the present invention provided based on such knowledge has an indoor unit in which a heat exchanger and a blower are housed inside the indoor unit main body, and the indoor unit main body can suck air. An air cleaning filter that has an open suction port and an air outlet that is open so that air can be blown out, and cleans the air sucked through the suction port between the suction port and the heat exchanger. Is arranged, and a part or all of the air cleaning filter is pleated with a plurality of creases, and has a bent shape portion curved or bent so as to separate from the heat exchanger. The heat exchanger is characterized in that the refrigerant preferentially flows to the portion of the air cleaning filter corresponding to the bent shape portion.

According to such a configuration, in the heat exchanger, the refrigerant can be preferentially flowed to the portion corresponding to the bent shape portion of the pleated air purifying filter, and the heat exchange efficiency can be improved.

(4) In the above-mentioned air conditioner, the amount of refrigerant flowing in the portion corresponding to the bent shape portion of the air cleaning filter in the heat exchanger is larger than the amount of refrigerant flowing in the other portion in the heat exchanger. It is good that it is characterized by many things.

According to such a configuration, it is possible to supply a larger amount of refrigerant to a portion of the heat exchanger where high heat exchange efficiency is expected than to other portions, and to further improve the heat exchange efficiency.

(5) The above-mentioned air conditioner has a refrigerating cycle in which a refrigerant is circulated with the heat exchanger, and the refrigerant returned from the refrigerating cycle to the heat exchanger purifies the air in the heat exchanger. It is preferable that the filter is supplied to a portion corresponding to the bent shape portion and then supplied to another portion of the heat exchanger.

According to this configuration, the refrigerant that has dissipated or absorbed heat in the refrigeration cycle and returned to the heat exchanger can be preferentially supplied to a portion of the heat exchanger that is expected to have high heat exchange efficiency for heat exchange. .. Therefore, according to the above-described configuration, further improvement in heat exchange efficiency can be expected.

(6) The air conditioner of the present invention is preferably characterized in that one or both of a quasi-HEPA filter and a HEPA filter is used as the air purifying filter.

In the air conditioner of the present invention, a HEPA filter (High Efficiency Particulate Air Filter) or a quasi-HEPA filter having a dust removing performance equivalent thereto is used as an air cleaning filter and corresponds to the entire area of the opening forming the suction port. Is provided. Therefore, in the air conditioner of the present invention, for example, an air purifying filter is used to remove dust floating in a room, pollen, mite dung, mold spores, fine dust, fine dust such as house dust, and the like. Can be collected at a high collection rate. Therefore, the air conditioner of the present invention can further reduce the possibility of dust entering the inside of the indoor unit main body as compared with the air purifying filter, and can keep the inside clean.

(7) The air conditioner of the present invention is characterized in that, among the air purifying filters, those arranged on the top surface side of the indoor unit main body are flat plates. good.

According to such a configuration, it is possible to arrange the air purifying filter while suppressing the increase in size of the indoor unit main body in the height direction.

(8) In the air conditioner of the present invention, the blower has a cross-flow fan that rotates around a horizontal axial center, and the suction port of the indoor unit main body is on the upstream side in the rotation direction of the cross-flow fan. It has a first suction region provided in the above and a second suction region provided on the upstream side of the cross flow fan in the rotation direction of the first suction region, and is provided corresponding to the first suction region. It is preferable that the air cleaning filter provided has a larger pressure loss due to the passage of air than the air cleaning filter provided corresponding to the second suction region.

According to such a configuration, the pressure loss in the second suction region further upstream from the first suction region is smaller than the pressure loss in the first suction region on the upstream side of the cross flow fan. As a result, in the air cleaning filter provided corresponding to the second suction region, while ensuring the maximum opening area of the air cleaning filter provided corresponding to the first suction region within a limited dimension range. By gaining a large opening area, it is possible to secure the required intake amount as a whole. As a result, performance such as ventilation efficiency and heat exchange efficiency can be improved.

(9) In the air conditioner of the present invention, the heat exchanger is arranged so as to be curved or bent on the outer peripheral side of the blower, and is arranged so as to face the suction port. It is preferable that the air cleaning filter is curved or bent according to the curvature or bending of the arrangement of the exchanger.

As described above, by bending or bending the air purifying filter according to the arrangement shape of the heat exchanger, the amount of air flowing into various parts of the heat exchanger can be balanced. Therefore, according to the above-described configuration, effects such as improvement of heat exchange efficiency can be expected.

(10) The air conditioner of the present invention has a drain pan provided inside the indoor unit main body and a vaporization filter capable of absorbing drain water accumulated in the drain pan, and a part of the vaporization filter is provided. It is preferable that the indoor unit is arranged at a position in contact with the air flow accompanying the operation of the blower inside the main body of the indoor unit.

According to such a configuration, the drain water accumulated in the drain pan can be absorbed by the vaporization filter, and the airflow generated by the operation of the blower can accelerate the drying of the vaporization filter. Therefore, according to the above-described configuration, it is possible to promote drying inside the indoor unit main body, suppress the generation of mold and the like, and maintain the inside of the indoor unit main body clean.

(11) The air conditioner of the present invention is preferably characterized in that the indoor unit main body has a dimension in the height direction shorter than a dimension in the depth direction.

According to such a configuration, it is possible to provide an air conditioner that is compact in the height direction.

(12) The air conditioner of the present invention has a frame body for holding the air purifying filter and an engaged portion provided on the housing side constituting the indoor unit main body, and the frame body is engaged with the frame body. It is preferable that the air cleaning filter can be attached to and detached from the housing side by engaging and disengaging with respect to the joint portion.

According to such a configuration, the air purifying filter can be attached to and detached from the frame and the housing side by engaging and disengaging the frame with respect to the engaged portion, which makes the work of attaching and detaching the air purifying filter convenient. Can be improved.

(13) The air conditioner of the present invention has an opening mounting member that is mounted so as to cover the opening provided in the housing, and the frame body is disengaged from the engaged portion in a predetermined direction. The air cleaning filter and the filter unit including the frame can be disengaged from the engaged portion by moving the filter unit by a predetermined disengagement distance or more, and the filter unit is attached to the housing side and the opening is attached. When the member is attached so as to cover the opening, the distance formed between the filter unit and the opening attachment member is less than the detachment distance, and the opening attachment member is removed from the opening. It is preferable that the filter unit can be moved in the detaching direction by the detaching distance or more in this state.

In the above-mentioned air conditioner, when the opening mounting member provided in the opening of the housing is attached, the distance formed between the filter unit and the opening mounting member is such that the filter unit is placed on the housing side. It is said that it is less than the disengagement distance required to disengage from the engaged portion. Therefore, the above-mentioned air conditioner can prevent the filter unit from being unexpectedly disengaged from the engaged portion when the opening attachment member is attached to the opening. Further, in the above-mentioned air conditioner, by removing the opening mounting member from the opening of the housing, the filter unit can be moved by a disengagement distance or more required to disengage the filter unit from the engaged portion. can. Therefore, in the above-mentioned air conditioner, the filter unit can be detached by removing the opening attachment member from the opening as needed while suppressing the detachment of the filter unit at all times.

(14) In the air conditioner described above, it is preferable that the opening is the suction port and the opening mounting member is a mesh-shaped pre-filter.

According to such a configuration, an air conditioner capable of removing the filter unit by performing the work of removing the pre-filter for cleaning or the like while utilizing the pre-filter for suppressing the detachment of the filter unit is provided. can.

According to the present invention, it is possible to provide an air conditioner capable of minimizing the intrusion of dust and keeping the inside clean.

It is a conceptual diagram which shows the air conditioner which concerns on 1st Embodiment of this invention. It is explanatory drawing which showed an example of the refrigeration cycle provided in the air conditioner of FIG. It is a block diagram centering on the control part provided in the air conditioner of FIG. It is a schematic diagram which schematically exemplifies the internal structure of the indoor unit main body which concerns on 1st Embodiment of this invention. It is a schematic diagram which schematically exemplifies the internal structure of the indoor unit main body which concerns on the 1st modification. It is a schematic diagram which schematically exemplifies the internal structure of the indoor unit main body which concerns on the 2nd modification. It is a schematic diagram which schematically exemplifies the internal structure of the indoor unit main body which concerns on the 3rd modification. It is a schematic diagram which schematically exemplifies the internal structure of the indoor unit main body which concerns on 4th modification. It is a schematic diagram which showed the arrangement example of the drain pan and the vaporization filter provided in the indoor unit main body of FIG. It is a perspective view which shows the appearance of the indoor unit provided in the air conditioner which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the internal structure of the indoor unit of FIG. (A) and (b) are perspective views showing the filter unit used in the indoor unit of FIG. 10, respectively. It is an exploded perspective view of the filter unit shown in FIG. FIG. 10 is a perspective view showing a state in which the pre-filter of the indoor unit of FIG. 10 is removed and the front panel of the indoor unit main body is opened. (A) is a cross-sectional view showing the first step when removing the filter unit from the indoor unit of FIG. 10, and (b) is a cross-sectional view showing the second step. It is explanatory drawing which showed the structure of the indoor side heat exchanger 54 provided in the indoor unit of FIG.

<< First Embodiment >>
Hereinafter, the air conditioner 10 according to the embodiment of the present invention will be described in detail with reference to the drawings. The air conditioner 10 is a so-called separate type air conditioner. The air conditioner 10 is roughly classified into an outdoor unit 20 and an indoor unit 50.

As shown in FIG. 2, the outdoor unit 20 includes a compressor 24 constituting a refrigeration cycle, an outdoor heat exchanger 28, an expansion valve 30, and a chamber inside the outdoor unit main body 22 formed of resin, metal, or the like. It houses members such as the outer blower 32. The outdoor unit 20 is connected to the indoor unit 50 via the refrigerant pipes 34 and 36.

A temperature detector is arranged in each part of the outdoor unit 20, and a detection signal can be output to the control unit 60, which will be described in detail later. Specifically, in the outdoor unit 20, the temperature detector 28a is arranged in the outdoor heat exchanger 28. Further, a temperature detector 24a and a temperature detector 24b are arranged on the discharge side and the suction side of the compressor 24. Further, a temperature detector 30a is arranged in the vicinity of the expansion valve 30.

The indoor unit 50 is an indoor unit main body 52 (air conditioner main body) made of synthetic resin parts, provided with an indoor heat exchanger 54, an indoor blower 56, a wind direction adjusting unit 58, a control unit 60, and the like. Is. The indoor unit main body 52 has a suction port 55 on the top surface 52a side and the front surface 52b side, and has an outlet 57 on the bottom surface 52c side. Although not shown, the suction port 55 is provided on the front side of the top surface 52a (above the second air cleaning filter 92 shown in the drawing) and on the front side of the bottom surface 52c (below the second air cleaning filter 92 shown in the drawing). Is also good. The shape and size of the indoor unit main body 52 can be appropriately set, but in the present embodiment, the dimension in the height direction is shorter than the dimension in the depth direction.

The indoor heat exchanger 54 is configured to allow refrigerant to flow in and out of the outdoor unit 20 via the refrigerant pipes 34 and 36. The indoor heat exchanger 54 is arranged so as to be curved or bent on the outer peripheral side of the indoor blower 56. For example, as in the present embodiment, the indoor heat exchanger 54 is formed by combining a plurality of (three in the illustrated example) heat exchangers 54x, 54y, 54z like a roof covering the indoor blower 56. , It can be arranged so as to bend on the outer peripheral side of the indoor side blower 56. The indoor heat exchanger 54 is arranged so as to face the suction port 55. Further, a temperature detector 54a is arranged in the indoor heat exchanger 54, and it is possible to output a detection signal toward the control unit 60, which will be described in detail later.

The indoor unit 50 can pass air through the indoor heat exchanger 54 by operating the indoor side blower 56. As a result, the indoor unit 50 can send the air that has been heat-exchanged with the refrigerant flowing in the indoor heat exchanger 54 from the air blowing portion provided in the indoor unit main body 52 into the living room. The indoor blower 56 is said to be provided with a cross flow fan 56a.

The indoor blower 56 has a cross-flow fan 56a that rotates around a horizontal axis. The indoor blower 56 is arranged inside the indoor unit main body 52 so that the rotation axis of the cross flow fan 56a extends in the width direction of the indoor unit main body 52. As a result, the indoor blower 56 can suck air from the top surface 52a side and the front surface 52b side of the indoor unit main body 52 and blow out air from the bottom surface side of the indoor unit main body 52. Specifically, as shown in FIGS. 1 and 4, the cross flow is viewed from the side with the upper side facing the top surface 52a side of the indoor unit main body 52 and the left side facing the front surface 52b side of the indoor unit main body 52. The fan 56a is supposed to rotate clockwise. Further, the indoor blower 56 is provided at a position biased toward the back 52d side (right side in FIGS. 1 and 4) of the indoor unit main body 52. Therefore, when the indoor blower 56 is operated, the suction port 55 is formed on the top surface 52a side of the indoor unit main body 52 close to the indoor blower 56 (first suction region 55x) and from the first suction region 55x. Air can be sucked from both the regions where the suction ports 55 are formed (second suction region 55y) on the front surface 52b side, which is the upstream side in the rotation direction of the cross flow fan 56a. When the suction port 55 is provided on the front side of the top surface 52a (above the second air cleaning filter 92 shown in the drawing) and on the front side of the bottom surface 52c (below the second air cleaning filter 92 shown in the drawing). The second suction region 55y includes a part of the suction port 55 provided on the top surface 52a and the suction port 55 provided on the bottom surface 52c.

The wind direction adjusting unit 58 is arranged near the air outlet 57 on the bottom surface 52c side of the indoor unit main body 52. The wind direction adjusting unit 58 adjusts the blowing direction from the air outlet 57 to the living room side in the vertical direction and the horizontal direction.

The control unit 60 controls the operation of the air conditioner 10. The control unit 60 can input a set value set by the user via a remote controller 70 or the like described later. Further, as shown in FIG. 3, the control unit 60 is attached to the temperature detectors 24a, 24b, 28a, 30a provided in the outdoor unit 20, the temperature detector 54a provided in the indoor unit 50, and the remote controller 70 described later. It is possible to receive output signals from the provided temperature detector 70a and humidity detector 70b. The control unit 60 determines the temperature and humidity in the living room based on the set values input via the remote controller 70 and the signals received from the temperature detectors 24a, 24b, 28a, 30a, 54a, 70a and the humidity detector 70b. , The operation of each part constituting the outdoor unit 20 and the indoor unit 50 is controlled so that the operation of each part satisfies the user's request. Specifically, the control unit 60 issues an operation command to the compressor 24, the expansion valve 30, the outdoor blower 32, the indoor blower 56, the wind direction adjusting unit 58, and the like.

More specifically, when the air conditioner 10 performs the cooling operation, the high-temperature and high-pressure refrigerant discharged from the compressor 24 is introduced into the outdoor heat exchanger 28 to exchange heat with the outdoor air. As a result, the refrigerant dissipates heat in the outdoor heat exchanger 28, condenses, and becomes liquid. The liquefied refrigerant enters the expansion valve 30 from the outdoor heat exchanger 28 and is depressurized. The decompressed refrigerant is sent to the indoor heat exchanger 54, expands to a low temperature and low pressure, and lowers the surface temperature of the indoor heat exchanger 54. The indoor heat exchanger 54 whose surface temperature has dropped absorbs heat from the indoor air, whereby the indoor air is cooled. After endothermic, the low temperature gaseous refrigerant returns to the compressor 24. The airflow generated by the outdoor blower 32 promotes heat dissipation from the outdoor heat exchanger 28, and the airflow generated by the indoor blower 56 promotes heat absorption of the indoor heat exchanger 54.

Further, when the air conditioner 10 performs the heating operation, the refrigerant is controlled to flow in the direction opposite to that during the cooling operation. That is, during the heating operation, the high-temperature and high-pressure refrigerant discharged from the compressor 24 enters the indoor heat exchanger 54, where it exchanges heat with the air in the living room. As a result, heat is dissipated from the refrigerant to the air in the living room, and the air in the living room is warmed. The refrigerant condensed and liquefied with heat dissipation enters the expansion valve 30 from the indoor heat exchanger 54 and is depressurized. The refrigerant decompressed by the expansion valve 30 is sent to the outdoor heat exchanger 28 to expand and become a low temperature and low pressure. As a result, the surface temperature of the outdoor heat exchanger 28 is lowered, and the refrigerant becomes low temperature and gaseous due to endothermic heat exchanged with the outdoor air. The low temperature and gaseous refrigerant in the outdoor heat exchanger 28 returns to the compressor 24. The airflow generated by the indoor blower 56 promotes heat dissipation from the indoor heat exchanger 54, and the airflow generated by the outdoor blower 32 promotes heat absorption by the outdoor heat exchanger 28.

The control unit 60 is provided with an operation unit 62, a notification unit 64, and the like. The operation unit 62 is for the user to perform an operation. The operation unit 62 can be remotely controlled by a remote controller (remote controller 70). The notification unit 64 is for notifying the operating state such as the power on / off state of the air conditioner 10, the setting state of the timer, the setting information set by the user such as the set temperature, and the like. The notification unit 64 includes a sound notification unit 64a and a display notification unit 64b. The sound notification unit 64a can output sound notification of the above-mentioned various information by voice, notification sound, or the like. Further, the display notification unit 64b can output the above-mentioned various information by displaying. The display notification unit 64b is provided at a position that is easy for the user to see, such as the surface of the indoor unit main body 52 that constitutes the indoor unit 50.

In addition to the above-described configuration, the indoor unit main body 52 includes a first pre-filter 80, a second pre-filter 82, a first air cleaning filter 90, and a second air cleaning filter 92 for capturing dust in the air. ing. These filters 80, 82, 90, and 92 are arranged between the suction port 55 forming the first suction region 55x and the second suction region 55y, respectively, and the indoor heat exchanger 54.

The first pre-filter 80 and the first air purifying filter 90 are provided at positions corresponding to the suction ports 55 forming the first suction region 55x. Further, the second pre-filter 82 and the second air purifying filter 92 are provided at positions corresponding to the suction ports 55 forming the second suction region 55y. Further, the first air purifying filter 90 and the second air purifying filter 92 are located inside the indoor unit main body 52 (on the indoor side heat exchanger 54 side) with respect to the first prefilter 80 and the second prefilter 82, respectively. Is located in. Therefore, the air sucked from the suction port 55 forming the first suction region 55x and the second suction region 55y first passes through the first pre-filter 80 and the second pre-filter 82, and then the first air cleaning filter 90, And after passing through the second air purifying filter 92, the indoor heat exchanger 54 can be reached. As described above, in the suction port 55 forming the first suction region 55x and the second suction region 55y, the combination of the first pre-filter 80 and the first air purifying filter 90, and the second pre-filter 82 and the second air purifying The filters are arranged so as to have a multiple structure (double structure in the present embodiment) composed of a combination with the filter 92.

The first pre-filter 80 and the second pre-filter 82 are, for example, a mesh-like member in which a linear member made of resin or metal is woven into a frame made of a resin molded body so as to have a predetermined opening. It is attached. The first pre-filter 80 and the second pre-filter 82 can capture relatively large dust contained in the air.

The first air purifying filter 90 and the second air purifying filter 92 may be made of, for example, a non-woven fabric made of glass fiber or the like. The first air purifying filter 90 and the second air purifying filter 92 are capable of capturing even smaller dust than the first prefilter 80 and the second prefilter 82. Specifically, the first air purifying filter 90 and the second air purifying filter 92 are composed of either one or a combination of a HEPA filter (High Efficiency Particulate Air Filter) and a quasi-HEPA filter. The HEPA filter is an air filter having a particle collection rate of 99.97% or more and an initial pressure loss of 245 Pa or less with respect to particles having a rated air volume and a particle size of 0.3 μm. The quasi-HEPA filter is an air filter having performance such as a particle collection rate similar to that of a HEPA filter. The quasi-HEPA filter has a smaller pressure loss than the HEPA filter. Therefore, the first air purifying filter 90 and the second air purifying filter 92 include minute dust contained in the air, pollen, mite dung, mold spores, fine dust, house dust, and the like. It is possible to reduce the intrusion of fine dust and the like, the adhesion of dirt to the inside of the indoor unit main body 52 and the indoor heat exchanger 54, and the reduction of mold growth.

Further, the first air purifying filter 90 and the second air purifying filter 92 are pleated (bellows-shaped) having a plurality of creases in part or in whole. In the present embodiment, the second air purifying filter 92 is pleated. As a result, the air passing area (area related to dust collection) and the air volume of the second air purifying filter 92 can be increased, and the pressure loss can be reduced.

The first air purifying filter 90 and the second air purifying filter 92 are arranged in different forms. Specifically, the first air purifying filter 90 arranged in the first suction region 55x on the top surface 52a side of the indoor unit main body 52 has a flat or flat shape. On the other hand, the second air purifying filter 92 arranged in the second suction region 55y on the front 52b side of the indoor unit main body 52 has a pleated shape as a whole and is intermediate from the indoor heat exchanger 54. It has a curved or bent shape (curved shape in the present embodiment) so that the portions are separated from each other. Due to such a shape, the second air purifying filter 92 has a larger air passage area (area related to dust collection) and a larger air volume than the first air purifying filter 90, and has a smaller pressure loss. Further, the first air purifying filter 90 is thinner than the second air purifying filter 92. As a result, even if the indoor unit main body 52 has dimensional restrictions in the vertical direction, not only the second air cleaning filter 92 but also the first air cleaning filter 90 is arranged inside the indoor unit main body 52. However, the intake air entering from the top surface 52a side can be sufficiently cleaned.

As described above, in the air conditioner 10 of the present embodiment, a mesh-shaped first pre-filter 80 and a second pre-filter 82 and an air purifier are provided between the suction port 55 and the indoor heat exchanger 54. It is assumed that the first air cleaning filter 90 and the second air cleaning filter 92 are arranged. Further, in the air conditioner 10 of the present embodiment, the first air purifying filter 90 and the second air purifying filter 92 are provided corresponding to the entire area of the opening forming the suction port 55. Therefore, in the air conditioner 10 of the present embodiment, even if dust passes through the first pre-filter 80 and the second pre-filter 82, it can be captured by the first air purifying filter 90 and the second air purifying filter 92. Highly sex. Therefore, the air conditioner 10 of the present embodiment minimizes the possibility of dust entering the inside of the indoor unit main body 52 as compared with the first air purifying filter 90 and the second air purifying filter 92, and cleans the inside. Can be maintained.

Further, in the air conditioner 10 of the present embodiment, a HEPA filter or a quasi-HEPA filter is used as the first air purifying filter 90 and the second air purifying filter 92. Therefore, in the air conditioner 10 of the present embodiment, the first air purifying filter 90 and the second air purifying filter 92 increase the amount of fine dust and the like that cannot be captured by the first prefilter 80 and the second prefilter 82. It can be collected at the collection rate. Therefore, the air conditioner 10 can further reduce the possibility of dust entering the inside of the indoor unit main body 52 as compared with the first air purifying filter 90 and the second air purifying filter 92. As a result, it is possible to suppress the growth of mold inside the indoor unit main body 52 and the generation of the cause of an unpleasant odor, and maintain cleanliness.

In the present embodiment, an example in which both the first air purifying filter 90 and the second air purifying filter 92 are HEPA filters or quasi-HEPA filters has been shown, but the present invention is not limited thereto. For example, one or both of the first air purifying filter 90 and the second air purifying filter 92 has a lower collection rate of dust and the like than a HEPA filter or a quasi-HEPA filter, and a higher collection rate than a pre-filter. A medium-performance filter or the like may be adopted, or a ULPA filter having higher performance than the HEPA filter may be adopted.

Further, in the present embodiment, an example in which the thickness of the first air purifying filter 90 and the second air purifying filter 92 are different is shown, but the present invention is not limited thereto. For example, in the example shown in FIG. 5 as the first modification, the first air purifying filter 90 and the second air purifying filter 92 are pleated, and the thickness of the first air purifying filter 90 is set to the second. It has the same thickness as the air purifying filter 92. With such a configuration, the amount of air sucked from the suction port 55 forming the first suction region 55x on the top surface 52a is large, and the pressure loss is small. In the example shown in FIG. 5, since the thickness of the first air purifying filter 90 is thicker than that in the example shown in FIG. 4, the height of the indoor unit main body 52 can be increased by that amount, or in the vertical direction. It is advisable to adjust the arrangement of the indoor heat exchanger 54 and the indoor blower 56 in the vertical direction so as to fit within the dimensional limit.

As described above, in the air conditioner 10 of the present embodiment, since the first air purifying filter 90 has a pleated shape having a plurality of folds, the area of the first air purifying filter 90 related to the collection of dust. It is possible to suppress the increase in pressure loss and noise, and improve the air suction performance and blowout performance.

Further, in the air conditioner 10 shown in FIGS. 4 and 5, the first air purifying filter 90 arranged on the top surface 52a side of the indoor unit main body 52 is flat or flat. According to such a configuration, it is possible to arrange the first air purifying filter 90 while suppressing the increase in size of the indoor unit main body 52 in the height direction.

In the air conditioner 10 shown in FIGS. 4 and 5, an example in which the entire second air purifying filter 92 is curved is shown, but the present invention is not limited to this, and the second air purifying is not limited to this. A part of the filter 92 may be curved. Further, in the examples of FIGS. 4 and 5, the first air purifying filter 90 is curved in a semicircular shape, but it may be curved in another shape or bent like a gate shape, for example. There may be.

Further, in the examples of FIGS. 4 and 5, the example in which the first air purifying filter 90 is made flat or flat is shown, but the present invention is not limited to this, and the first air purifying filter 90 is not limited to this. A part or all of it may be curved or bent. For example, in the example shown in FIG. 6 as a second modification, the first air purifying filter 90 also has a curved shape according to the shape of the indoor heat exchanger 54, similarly to the second air purifying filter 92. Has been done. According to such a configuration, in the first air purifying filter 90 as well as in the second air purifying filter 92, the area related to the collection of dust is increased, the pressure loss and the increase in noise are suppressed, and the air suction performance is improved. , It is possible to improve the blowing performance.

Further, as a third modification, as in the example shown in FIG. 7, a configuration in which an air purifying filter 94 as if these are integrated is provided instead of the first air purifying filter 90 and the second air purifying filter 92. May be. The air purifying filter 94 has an arched or arcuate curved shape depending on the shape of the indoor heat exchanger 54. Further, the air cleaning filter 94 is arranged between the suction port 55 and the indoor heat exchanger 54, similarly to the first air cleaning filter 90 and the second air cleaning filter 92 described above, and the suction port 55 is provided. It is provided corresponding to the entire region of the opening (first suction region 55x and second suction region 55y). If the air purifying filter 94 is a pleated HEPA filter or a quasi-HEPA filter like the first air purifying filter 90 and the second air purifying filter 92, the area related to the collection of dust increases, and pressure loss and noise are reduced. It is possible to suppress the increase, improve the air suction performance and the blowout performance. Further, in such a shape, the height of the indoor unit main body 52 is slightly increased, and the indoor heat exchanger 54 and the indoor blower 56 are arranged in the vertical direction so as to be within the dimensional restrictions in the vertical direction. By adjusting the height, the height of the indoor unit main body 52 can be set to the same height as when the configuration illustrated in FIG. 4 is adopted.

As described above, in the air conditioner 10 shown in FIG. 4, the indoor side blower 56 has a cross flow fan 56a, and the first air purifying filter 90 provided corresponding to the first suction region 55x is the first. It is said that the pressure loss due to the passage of air is larger than that of the second air cleaning filter 92 provided corresponding to the second suction region 55y. Due to such a configuration, the air conditioner 10 shown in FIG. 4 is larger than the first suction region 55x as compared with the pressure loss in the first suction region 55x located on the upstream side of the cross flow fan 56a. Further, the pressure loss in the second suction region 55y on the upstream side becomes smaller. As a result, the opening area of the first air purifying filter 90 provided corresponding to the first suction region 55x is secured as much as possible within a limited dimension range, and is provided corresponding to the second suction region 55y. By gaining a large opening area in the second air purifying filter 92, it is possible to secure the required intake air amount as a whole, and it is possible to improve the performance such as ventilation efficiency and heat exchange efficiency.

As described above, in the air conditioner 10 shown in FIGS. 4 and 5, the indoor heat exchanger 54 is arranged so as to be curved or bent on the outer peripheral side of the indoor blower 56, and at the suction port 55. It is arranged so as to face each other, and the first air cleaning filter 90 is curved or bent according to the curvature or bending of the arrangement of the indoor heat exchanger 54. Further, in the air conditioner 10 shown in FIGS. 6 and 7, not only the first air purifying filter 90 but also the second air purifying filter 92 depends on the curvature or bending of the arrangement of the indoor heat exchanger 54. It is said that it is curved or bent. With such a configuration, the amount of air flowing into each part of the indoor heat exchanger 54 can be balanced. Therefore, according to the above-described configuration, effects such as improvement of heat exchange efficiency can be expected.

Further, as shown in FIG. 8, the air conditioner 10 described above may be provided with a vaporization filter 110 capable of absorbing drain water accumulated in the drain pan 100 provided inside the indoor unit main body 52. Further, when the vaporization filter 110 is provided, it is preferable that a part of the vaporization filter 110 is arranged inside the indoor unit main body 52 at a position where it comes into contact with the air flow accompanying the operation of the indoor blower 56. With such a configuration, the drain water accumulated in the drain pan 100 can be absorbed by the vaporization filter 110, and the airflow generated by the operation of the indoor blower 56 can accelerate the drying of the vaporization filter 110. Therefore, according to such a configuration, it is possible to promote the drying of the drain water collected in the drain pan 100, suppress the generation of mold and the like inside the indoor unit main body 52, and maintain the inside of the indoor unit main body 52 clean. can.

When the vaporization filter 110 is provided on the drain pan 100 as shown in FIG. 8, as shown in FIG. 9, the drain pan 100 is placed in a predetermined direction (for example, in the width direction from one side to the other side) in the indoor unit main body 52. ) So that the drain water collects toward the drain port 102. Further, in the case of the configuration as shown in FIG. 9, it is preferable to provide the vaporization filter 110 in the portion where the drain water collects in the vicinity of the drain port 102. According to such a configuration, the drain water can be more efficiently absorbed by the vaporization filter 110, and the inside of the indoor unit main body 52 can be kept clean. Although not shown, the vaporization filter 110 may be movable. That is, the vaporization filter 110 is retracted to a position where it does not absorb the drain water during the cooling / heating operation, and the vaporization filter 110 is moved to a position where the drain water can be absorbed during the drying operation. You may.

In the air conditioner 10 described above, the indoor unit main body 52 is preferably set so that the dimension in the height direction is shorter than the dimension in the depth direction. With such a configuration, the air conditioner 10 is compact in the height direction and can be installed in a place where there is a restriction in the height direction or the like.

<< Second Embodiment >>
Hereinafter, the air conditioner 200 according to the second embodiment will be described in detail with reference to the drawings. Since most of the air conditioners 200 of the second embodiment have the same configuration as the air conditioner 10 of the first embodiment described above, the parts having the same configuration are designated by the same reference numerals and are described in detail. The explanation shall be omitted or simplified.

As shown in FIGS. 1 and 2, the air conditioner 200 is a so-called separate type air conditioner similar to the above-mentioned air conditioner 10, and is roughly classified into an outdoor unit 20 and an indoor unit 50. The air conditioner 200 has the same configuration of the outdoor unit 20 and most of the configurations of the indoor unit 50 as the above-mentioned air conditioner 10, but a part of the configuration of the indoor unit 50 is different from the air conditioner 10. It is characterized by the fact that it is.

Specifically, as shown in FIG. 11, in the air conditioner 200, the indoor unit 50 accommodates the indoor heat exchanger 54 and the indoor blower 56 inside the indoor unit main body 52 (housing). It is supposed to be. In this respect, the air conditioner 200 has the same configuration as the air conditioner 10 and the indoor unit 50 described above. On the other hand, the air conditioner 200 is characterized in the configuration of the suction port 55 and the pre-filter 280 attached to the suction port 55, the attachment structure of the second air purifying filter 92, the configuration of the indoor heat exchanger 54, and the like. Hereinafter, these characteristic configurations will be described in detail, as appropriate, in comparison with the configuration of the air conditioner 10 of the first embodiment.

[Structure of suction port 55 and pre-filter 280]
In the air conditioner 10 described above, the suction ports 55 are formed in both the first suction region 55x on the top surface side of the indoor unit main body 52 and the second suction region 55y on the front surface side. On the other hand, as shown in FIGS. 10 and 11, in the air conditioner 200, a first suction region 255x corresponding to the first suction region 55x of the air conditioner 10 is provided on the top surface side of the indoor unit main body 52. At the same time, the second suction region 255y corresponding to the second suction region 55y of the air conditioner 10 also exists on the top surface side of the indoor unit main body 52, which is different from the air conditioner 10. The first suction region 255x and the second suction region 255y are provided so as to have a positional relationship corresponding to the first air cleaning filter 90 and the second air cleaning filter 92, respectively. In the present embodiment, the first suction region 255x is on the back side and the second suction region 255y is provided corresponding to the first air purifying filter 90 being provided on the back side and the second air purifying filter 92 being provided on the front side. It is formed on the top surface of the indoor unit main body 52 so as to be on the front side.

Further, in the air conditioner 10, the first pre-filter 80 and the second pre-filter 82 are provided so as to correspond to the first suction region 55x and the second suction region 55y, respectively. The air conditioner 200 may have the same configuration, but in the present embodiment, as shown in FIG. 10 and the like, the size can be attached to both the first suction region 55x and the second suction region 55y. A plurality of integrated pre-filters 280 (opening mounting members) in which a mesh-shaped filter is attached to the frame body of the indoor unit 52 in the width direction of the indoor unit main body 52 (two in the present embodiment) are arranged in parallel. Has been done.

[Mounting structure of the second air purifying filter 92]
As shown in FIG. 11 and the like, in the air conditioner 200, the first air purifying filter 90 is flat or flat on the top surface 52a side of the indoor unit main body 52, similarly to the air conditioner 10 of the first embodiment described above. It has a flat plate shape and is arranged above the indoor heat exchanger 54. On the other hand, the second air purifying filter 92 is similar to the air conditioner 10 in that the second air purifying filter 92 is arranged in a curved shape so that the intermediate portion is separated from the indoor heat exchanger 54, but the frame body 292a is used. It is characterized in that it has a structure attached to the indoor unit main body 52 in use. Hereinafter, the mounting structure of the second air purifying filter 92 will be described in more detail.

As shown in FIGS. 12 and 13, the second air purifying filter 92 is detachable from the indoor unit main body 52 in the state of the filter unit 292 set in the frame body 292a. The second air purifying filter 92 has a pleated shape having a plurality of creases, and is set in a bent shape curved with respect to the frame body 292a. The second air purifying filter 92 can be attached to the inside of the indoor unit main body 52 in the state of the filter unit 292.

Specifically, as shown in FIG. 11, inside the indoor unit main body 52, an engaged portion 255 is provided on the front side with respect to the indoor heat exchanger 54. On the other hand, the frame body 292a forming the filter unit 292 is provided with an engaging portion 292b that can be engaged with the engaged portion 255. The engaged portion 255 and the engaging portion 292b can support the filter unit 292 at a predetermined position in the engaged state, and can be appropriately engaged and disengaged. The engaged portion 255 and the engaging portion 292b can be appropriately made as long as they can exhibit such a function, but in the present embodiment, the engaging portion 292b is directed downward. It has a substantially "U" shape that is open, and the engaged portion 255 has a protruding shape that fits into the open portion of the engaging portion 292b. Therefore, at the mounting position of the filter unit 292 with respect to the indoor unit main body 52, the filter unit 292 is slid downward and the engaging portion 292b is engaged with the engaged portion 255 to engage the filter unit 292 with the indoor unit main body. It can be fixed to 52.

Here, by engaging the engaging portion 292b with the engaged portion 255, the filter unit 292 and the pre-filter 280 (opening attachment) in a state where the filter unit 292 is attached to the indoor unit main body 52. The distance formed between the member) is less than the length (detachment distance) required to slide the filter unit 292 upward for removal. Therefore, the filter unit 292 does not come off from the indoor unit main body 52 when the pre-filter 280 is attached to the first suction region 55x constituting the suction port 55. On the other hand, as shown in FIG. 15A, when the pre-filter 280 is removed and the opening region forming the suction port 55 is opened, the filter unit 292 is directed in the detachment direction (upward in the present embodiment). Therefore, it becomes possible to move more than the departure distance. Therefore, as shown in FIG. 15A, the pre-filter 280 is first removed, the front panel 52f of the indoor unit main body 52 is opened, and then the filter is shown by an upward arrow in FIG. 15B. By sliding the unit 292 upward by a predetermined amount (disengagement distance), the engaging portion 292b is disengaged from the engaged portion 255, so that the filter unit 292 is disengaged from the indoor unit main body 52. .. In this state, the filter unit 292 can be removed from the indoor unit 292 by pulling out the filter unit 292 toward the front side of the indoor unit main body 52 as shown by an arrow in FIG. 15B. Further, when the filter unit 292 is attached, the filter unit 292 can be introduced into the indoor unit main body 52 and engaged with the filter unit 292 by performing the operation opposite to that described above.

[Structure of indoor heat exchanger 54]
Similar to the air conditioner 10 described above, the air conditioner 200 includes an indoor heat exchanger 54 for cooling or heating the air that has passed through the first air cleaning filter 90 and the second air cleaning filter 92. There is. The indoor heat exchanger 54 is a so-called plate fin type heat exchanger. As shown in FIG. 16, the indoor heat exchangers 54 are provided so as to penetrate a large number of fins 54f arranged side by side in the width direction (paper surface depth direction in FIG. 16) of the indoor unit main body 52 at intervals. It has a pipeline composed of connecting a plurality of pipes 54p. The indoor heat exchanger 54 causes the refrigerant (heat medium) to flow through the pipeline configured by the pipe 54p, and reciprocates the refrigerant in the direction in which the fins 54f are lined up, thereby causing the air flowing between the fins 54f and the pipe 54p to reciprocate. It is possible to exchange heat with the heat medium flowing inside the.

Here, in the air conditioner 200, the indoor heat exchanger 54 considers the ventilation resistance of the first air purifying filter 90 and the second air purifying filter 92, and determines the flow rate of the refrigerant flowing through the pipe 54p for each part and the flow rate of the refrigerant. The order in which the refrigerant flows is specified. Specifically, the indoor heat exchanger 54 is roughly divided into four areas: a first heat exchange area 54A, a second heat exchange area 54B, a third heat exchange area 54C, and a fourth heat exchange area 54D. ..

The first heat exchange area 54A is an area which is located at a position corresponding to the second air purifying filter 92 and whose main part is a portion facing the second air purifying filter 92. The second heat exchange area 54B is an area in which a portion adjacent to the indoor side blower 56 side with respect to the first heat exchange area 54A forms a main part. That is, the second heat exchange area 54B is an area that is located at a position corresponding to the second air purifying filter 92 and whose main part is a portion facing the indoor side blower 56 side. The third heat exchange area 54C is an area that is located at a position corresponding to the first air cleaning filter 90 and whose main part is a position facing the first air cleaning filter 90. The fourth heat exchange area 54D is an area in which a portion adjacent to the indoor side blower 56 side with respect to the third heat exchange area 54C forms a main part. That is, the fourth heat exchange area 54D is an area that is located at a position corresponding to the first air purifying filter 90 and whose main part is a portion facing the indoor side blower 56 side.

The indoor heat exchanger 54 distributes the refrigerant supplied from the outdoor unit 20 side to the first heat exchange area 54A from the first heat exchange area 54A to the second heat exchange area 54B and the third heat exchange area 54C. As possible, the pipes are connected between the areas via the distribution valve 54v. The distribution ratio of the refrigerant from the first heat exchange area 54A to the second heat exchange area 54B and the third heat exchange area 54C can be appropriately set, but in the present embodiment, it is 1: 1. Further, in the indoor heat exchanger 54, a pipe 54p is connected between both areas so that the refrigerant can be supplied from the third heat exchange area 54C to the fourth heat exchange area 54D. Therefore, the indoor heat exchanger 54 first supplies the refrigerant supplied from the outdoor unit 20 side to the pipe 54p provided in the first heat exchange area 54A, and exchanges heat with the air passing through the first heat exchange area 54A. Can be made to. Further, the air that has passed through the first heat exchange area 54A can further exchange heat with the refrigerant distributed from the first heat exchange area 54A to the second heat exchange area 54B. On the other hand, the air passing through the third heat exchange area 54C exchanges heat with the refrigerant distributed from the first heat exchange area 54A. Further, the air that has passed through the third heat exchange area 54C is further heat exchanged with the refrigerant supplied from the third heat exchange area 54C to the fourth heat exchange area 54D. The refrigerant that has reached the most downstream of the pipes 54p provided in the second heat exchange area 54B and the fourth heat exchange area 54D is connected to the collecting valve 54w by piping. The refrigerant collected in the collecting valve 54w is returned to the outdoor unit 20 side.

Since the indoor heat exchanger 54 has the flow path configuration as described above, the refrigerant can be preferentially flowed to the portion corresponding to the bent shape portion of the second air cleaning filter 92. Further, the amount of the refrigerant flowing in the portion corresponding to the bent shape portion of the second air purifying filter 92 is larger than the amount of the refrigerant flowing in the other portion in the indoor heat exchanger 54.

As described above, the air conditioner 200 according to the second embodiment has a configuration in which the refrigerant preferentially flows to the portion corresponding to the bent shape portion of the second air cleaning filter 92 in the indoor heat exchanger 54. .. Due to such a configuration, in the air conditioner 200, in the indoor heat exchanger 54, the refrigerant is preferentially given to the portion corresponding to the bent shape portion of the pleated second air cleaning filter 92. It is possible to improve the efficiency of flow and heat exchange.

Further, in the air conditioner 200, the amount of the refrigerant flowing in the portion corresponding to the bent shape portion of the second air cleaning filter 92 in the indoor heat exchanger 54 is the amount of the refrigerant flowing in the other portion in the indoor heat exchanger 54. It is supposed to be more than the amount. Therefore, the air conditioner 200 preferentially supplies a larger amount of refrigerant than the other parts to the first heat exchange area 54A, which is expected to have high heat exchange efficiency in the indoor heat exchanger 54, and has high heat exchange efficiency. Further improvement can be achieved.

Further, in the air conditioner 200 of the present embodiment, the frame body 292a constituting the filter unit 292 is engaged with and disengaged from the engaged portion 255 provided on the indoor unit main body 52 side, so that the indoor unit main body 52 The second air purifying filter 92 is removable. Therefore, the air conditioner 200 can improve the convenience of attaching / detaching the second air purifying filter 92.

In the air conditioner 200 described above, when the pre-filter 280 provided in the suction port 55 is attached, the distance formed between the filter unit 292 and the pre-filter 280 is such that the filter unit 292 is engaged on the housing side. It is said that it is less than the separation distance required to separate from the joint portion 255. Therefore, the air conditioner 200 can prevent the filter unit 292 from unexpectedly disengaging from the engaged portion 255 when the pre-filter 280 is attached to the suction port 55. Further, the air conditioner 200 moves the filter unit 292 by the disengagement distance required to disengage the filter unit 292 from the engaged portion 255 by removing the pre-filter 280 from the suction port 55 of the housing. Can be done. Therefore, the air conditioner 200 can detach the filter unit 292 by removing the pre-filter 280 from the suction port 55 as needed while suppressing the detachment of the filter unit 292 at all times.

As shown in FIG. 11 and the like, in the air conditioner 200 according to the second embodiment, the area on the front side of the indoor unit main body 52 is a filter installation area in which the second air purifying filter 92 (filter unit 292) is arranged. The structure is such that other configurations are integrated in the area on the back side (right side in the figure). Therefore, the air conditioner 200 can be shared with the same configuration as the air conditioner of the type in which the second air purifying filter 92 is not provided except for the filter installation area. Specifically, for example, a portion other than the second air purifying filter 92 can be unitized, and the unit can be shared by the air conditioner 200 and a type without the second air purifying filter 92.

The present invention is not limited to those shown as the above-described embodiments, modifications, and the like, and there may be other embodiments from the teaching and spirit within the scope of the claims. The components of the above-described embodiment may be arbitrarily selected and combined. Further, any component of the embodiment and any component described in the means for solving the invention or a component embodying any component described in the means for solving the invention are arbitrarily combined. May be configured. We also intend to acquire the rights to these in the amendment or divisional application of the present application.

The present invention can be suitably used in all air conditioners.

10: Air conditioner 50: Indoor unit 52: Indoor unit body 52a: Top surface 52b: Front 54: Indoor heat exchanger 55: Suction port (opening)
55x: First suction area 55y: Second suction area 56: Indoor side blower 56a: Cross flow fan 57: Outlet 80: First pre-filter 82: Second pre-filter 90: First air cleaning filter 92: Second air Cleaning filter 100: Drain pan 110: Vaporizing filter 200: Air conditioner 255: Engagement part 280: Pre-filter 292: Filter unit 292a: Frame

Claims (11)

It has an indoor unit that houses a heat exchanger and a blower inside the main body of the indoor unit.
The indoor unit body
A suction port that opens to allow air to be sucked in,
An air outlet that opens to allow air to blow out,
Have,
The heat exchanger is arranged between the suction port and the blower.
Between the suction port and the heat exchanger
With a mesh pre-filter,
An air purifying filter that purifies the air sucked through the suction port,
Is placed,
An air conditioner characterized in that the air purifying filter is provided corresponding to the entire area of the opening forming the suction port. The first aspect of the present invention is characterized in that a part or all of the air cleaning filter has a pleated shape having a plurality of folds and a curved or bent shape so as to separate from the heat exchanger. The described air conditioner. It has an indoor unit that houses a heat exchanger and a blower inside the main body of the indoor unit.
The indoor unit body
A suction port that opens to allow air to be sucked in,
An air outlet that opens to allow air to blow out,
Have,
An air purifying filter that purifies the air sucked through the suction port is arranged between the suction port and the heat exchanger.
A part or all of the air purifying filter is pleated with a plurality of creases, and has a bent shape portion curved or bent so as to separate from the heat exchanger.
An air conditioner characterized in that a refrigerant preferentially flows to a portion of the heat exchanger corresponding to the bent shape portion of the air purifying filter. 3. The third aspect of the heat exchanger is that the amount of the refrigerant flowing in the portion of the air cleaning filter corresponding to the bent shape portion is larger than the amount of the refrigerant flowing in the portion of the heat exchanger corresponding to the bent shape portion. The air conditioner described in. It has a refrigeration cycle that circulates the refrigerant with the heat exchanger.
The refrigerant returned from the refrigeration cycle to the heat exchanger is supplied to the portion of the air cleaning filter corresponding to the bent shape portion in the heat exchanger, and then supplied to other portions in the heat exchanger. The air conditioner according to claim 3 or 4, characterized in that. The air conditioner according to any one of claims 1 to 5, wherein either one or both of a quasi-HEPA filter and a HEPA filter are used as the air purifying filter. The air conditioning according to any one of claims 1 to 6, wherein the air cleaning filter arranged on the top surface side of the indoor unit main body has a flat plate shape. Machine. The blower has a cross-flow fan that rotates around a horizontal axis.
The suction port of the indoor unit main body is provided at a first suction region provided on the upstream side in the rotation direction of the cross flow fan and on the upstream side in the rotation direction of the cross flow fan with respect to the first suction region. Has two suction areas,
The air cleaning filter provided corresponding to the first suction region has a larger pressure loss due to the passage of air than the air cleaning filter provided corresponding to the second suction region. The air conditioner according to any one of claims 1 to 7. The heat exchanger is arranged so as to be curved or bent on the outer peripheral side of the blower, and is arranged so as to face the suction port.
The air conditioner according to any one of claims 1 to 8, wherein the air purifying filter is curved or bent according to the bending or bending of the arrangement of the heat exchanger. The drain pan provided inside the indoor unit body and
It has a vaporization filter capable of absorbing the drain water accumulated in the drain pan.
The air conditioner according to any one of claims 1 to 9, wherein a part of the vaporization filter is arranged inside the indoor unit main body at a position where it comes into contact with an air flow accompanying the operation of the blower. .. The air conditioner according to any one of claims 1 to 10, wherein the indoor unit main body has a dimension in the height direction shorter than a dimension in the depth direction.

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