JP7257468B2 - air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an air conditioner using a copper plate in a portion of an indoor unit that is likely to become unsanitary or visible.

An indoor unit of a room air conditioner has a cross-flow fan that draws in air from a room and blows out the air that has been heat-exchanged with a refrigerant into the room. An air outlet is provided from the lower side of the front surface of the indoor unit to the front side of the lower surface. The air sucked into the indoor unit by the cross-flow fan undergoes heat exchange in the heat exchanger, passes through a ventilation passage formed between the heat exchanger and the air outlet, and is blown out into the room from the air outlet. .

The air outlet is provided with a vertical wind direction plate for changing the wind direction up and down. When the operation of the indoor unit is stopped, the vertical wind direction plate is folded inward. The top surface of the vertical wind direction plate faces the inside of the indoor unit, and the bottom surface of the vertical wind direction plate faces the indoor side. During operation of the indoor unit, the vertical wind direction plate opens downward to deflect the air in a predetermined vertical direction.

An air suction port for sucking air from the room is provided on the front or top surface of the indoor unit. A filter is provided between the air inlet and the heat exchanger to remove dust and the like from the air. However, dust that cannot be removed by the filter and condensed water that has condensed in the heat exchanger and is entrained in the airflow may adhere to the inner wall surface of the ventilation passage and the upper surface of the vertical wind direction plate. Adherence of such foreign matter is unsanitary, so various countermeasures have been taken.

Patent Literature 1 describes an air conditioner that has a function of sterilizing ventilation with ultraviolet light from an ultraviolet lamp. An ultraviolet lamp is provided downstream of the cross-flow fan. The casing section for guiding the airflow from the cross-flow fan is provided with an ultraviolet protection member that blocks ultraviolet light and protects the casing section. The ultraviolet protection member is a stainless plate made of stainless steel.

Patent Literature 2 describes an air conditioner capable of improving the design of the indoor unit while keeping the air outlet clean. In this air conditioner, a metal sheet is attached to the surface of the vertical wind direction plate that becomes the upper surface when the operation is stopped. The metal sheet is made of stainless steel or aluminum.

JP 2011-226717 A JP 2017-040410 A

In Patent Literatures 1 and 2, in an indoor unit of an air conditioner, a stainless steel plate or an aluminum plate is provided on the wall surface of the ventilation passage and the surface of the vertical wind direction plate that come into contact with the airflow. By providing such a metal plate, the surface in contact with the airflow becomes smooth. Therefore, regardless of the use of ultraviolet rays, adhesion of dust, microorganisms, viruses, and condensed water scattered from the heat exchanger can be suppressed, and unsanitary contact with the airflow can be prevented to some extent. It can be said.

However, since the conventional metal plates used in Patent Documents 1 and 2 are made of stainless steel or aluminum, the antibacterial and antiviral properties of the metal itself are not so high. Therefore, there is a demand for a countermeasure to keep the portion in contact with the air flow located downstream of the heat exchanger clean for a longer period of time. In addition, the wall surface of the ventilation passage and the surface of the vertical airflow direction plate that come into contact with the airflow are places that are easily visible to the user in the room. Therefore, it is desired that such a portion be provided with high designability in terms of appearance.

The surface of the vertical wind direction plate and the like that come into contact with the airflow may be wiped by the user. If a metal plate having a low hardness, such as aluminum, is provided in such a place, it is likely to be scratched during wiping, resulting in a poor appearance. On the other hand, it has been confirmed that the higher the hardness and the thinner the metal plate, the more likely the waviness phenomenon occurs during rolling. A flat metal plate that has been bent by the waving phenomenon also has the problem that if it is placed in a flat place that is easily visible to the user, it tends to spoil the appearance.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an air conditioner in which the surfaces of the indoor unit that come into contact with the airflow are kept clean and the design of the indoor unit is enhanced.

In order to solve the above-mentioned problems, an air conditioner according to the present invention provides a copper plate or copper alloy plate in which at least a portion of a ventilation passage on the downstream side of a heat exchanger or at least a portion of an up-down wind direction plate has a wavy bend. It is equipped with an indoor unit that is arranged in a curved manner.

ADVANTAGE OF THE INVENTION According to this invention, the air conditioner which can keep the surface which contacts the airflow of an indoor unit clean, and can improve the designability of an indoor unit can be provided.

It is a figure which shows the structure of the whole air conditioner. It is a figure which shows an example of the refrigerant circuit of an air conditioner. Fig. 2 is a side cross-sectional view of an indoor unit of an air conditioner; Fig. 2 is a side cross-sectional view of the indoor unit showing locations where curved copper plates and flat copper plates are arranged; Fig. 3 is a bottom perspective view of the indoor unit of the air conditioner when operation is stopped; Fig. 2 is a bottom perspective view of the indoor unit of the air conditioner in operation; Fig. 3 is a side sectional view showing an enlarged air outlet of the indoor unit of the air conditioner; FIG. 4 is a perspective view of the front up-down wind direction plate showing a method of attaching a metal sheet; FIG. 4 is a perspective view of the front up-down wind direction plate showing a state in which a metal sheet is attached; FIG. 10 is a perspective view of a cover used for attaching a metal sheet to the front vertical airflow direction plate; FIG. 4 is a perspective view of the rear up-down wind direction plate showing how to attach the metal sheet; FIG. 4 is a perspective view of the rear up-down wind direction plate showing a state in which a metal sheet is attached; FIG. 4 is a perspective view of a cover used for attaching a metal sheet to the rear up/down wind direction plate. FIG. 4 is a perspective view of the rear part of the indoor unit before assembly, showing how to attach the metal sheet. Fig. 3 is a perspective view of the rear portion of the indoor unit before assembly, showing a state in which the metal sheet is attached;

An air conditioner according to an embodiment of the present invention will be described with reference to the drawings. In addition, the same code|symbol is attached|subjected about the structure which is common in each following figure, and the overlapping description is abbreviate|omitted.

FIG. 1 is a diagram showing the overall configuration of an air conditioner.
As shown in FIG. 1, the air conditioner AC includes an indoor unit 100 and an outdoor unit 200. As shown in FIG. Also, a remote control 300 is attached as a separate unit. The indoor unit 100 and the outdoor unit 200 are connected to each other via connecting pipes (not shown) through which refrigerant pipes and electric signal lines pass. The remote controller 300 is operated by a user and transmits an operation signal for driving to the indoor unit 100 .

The air conditioner AC is a device that air-conditions a space by blowing out heated, cooled, and dehumidified air. In the air conditioner AC, refrigerant circulates between the indoor unit 100 and the outdoor unit 200 through refrigerant pipes. In the outdoor unit 200, heat exchange is performed between the refrigerant and the outside air. In the indoor unit 100, heat exchange is performed between the refrigerant and indoor air. The indoor unit 100 blows out the air sucked from the room into the room after exchanging heat with the refrigerant to adjust the temperature and humidity of the room.

FIG. 2 is a diagram showing an example of a refrigerant circuit of an air conditioner.
As shown in FIG. 2, the air conditioner AC includes a refrigerant circuit 1 that constitutes a heat pump. A refrigerant circuit 1 includes a compressor 2, a four-way valve 3, an outdoor heat exchanger 4, an expansion valve 5, an indoor heat exchanger 6, and the like. These elements are connected to each other via refrigerant pipes through which refrigerant flows. These elements and the refrigerant pipe form a closed circuit in which the refrigerant circulates.

An outdoor blower fan 7 is attached near the outdoor heat exchanger 4 . An indoor blower fan 8 is attached near the indoor heat exchanger 6 . Compressor 2 , four-way valve 3 , outdoor heat exchanger 4 , expansion valve 5 and outdoor fan 7 are housed in outdoor unit 200 . Indoor heat exchanger 6 and indoor blower fan 8 are housed in indoor unit 100 .

The compressor 2 sucks the gas refrigerant, adiabatically compresses the low-temperature and low-pressure gas refrigerant, and discharges the high-temperature and high-pressure gas refrigerant. The four-way valve 3 switches the circulation direction of the refrigerant discharged from the compressor 2 according to the operation. The outdoor heat exchanger 4 exchanges heat between the refrigerant and the outside air, functions as a condenser during cooling operation, and functions as an evaporator during heating operation. The outdoor blower fan 7 blows air to facilitate heat exchange.

The expansion valve 5 works as a pressure reducer. The indoor heat exchanger 6 exchanges heat between the refrigerant and indoor air, and functions as an evaporator during cooling operation and as a condenser during heating operation. The indoor blower fan 8 blows air to promote heat exchange. As shown in FIG. 3, the indoor blower fan 8 is composed of a cylindrical cross-flow fan.

The cooling operation of the air conditioner AC is performed as follows. The high-temperature, high-pressure refrigerant gas adiabatically compressed by the compressor 2 is sent to the outdoor heat exchanger 4 through the four-way valve 3 . The high-temperature, high-pressure refrigerant gas is cooled by heat exchange with the outside air in the outdoor heat exchanger 4 that functions as a condenser, and becomes a liquid refrigerant. The liquid refrigerant is decompressed by the expansion valve 5 and expanded to become a low-temperature, low-pressure gas-liquid two-phase refrigerant containing a small amount of refrigerant gas.

The gas-liquid two-phase refrigerant is sent to the indoor heat exchanger 6 . The gas-liquid two-phase refrigerant evaporates by exchanging heat with indoor air in the indoor heat exchanger 6, which functions as an evaporator, and becomes a low-temperature, low-pressure gas refrigerant. The low-temperature, low-pressure gas refrigerant passes through the four-way valve 3 and returns to the compressor 2 . The indoor air is deprived of heat by heat exchange with the refrigerant in the indoor heat exchanger 6 which works as an evaporator. Such a cycle is repeated to cool the room.

The heating operation of the air conditioner AC is performed in a cycle opposite to that of the cooling operation. The high-temperature, high-pressure refrigerant gas adiabatically compressed by the compressor 2 is sent to the indoor heat exchanger 6 by switching the four-way valve 3 . The high-temperature, high-pressure refrigerant gas is cooled by heat exchange with the indoor air in the indoor heat exchanger 6, which functions as a condenser, and becomes a liquid refrigerant. The liquid refrigerant is decompressed by the expansion valve 5 to become a low-temperature, low-pressure liquid refrigerant.

The low-temperature, low-pressure liquid refrigerant is sent to the outdoor heat exchanger 4 . The low-temperature, low-pressure liquid refrigerant evaporates by exchanging heat with the outside air in the outdoor heat exchanger 4, which functions as an evaporator, to become a low-temperature, low-pressure gas refrigerant. The low-temperature, low-pressure gas refrigerant passes through the four-way valve 3 and returns to the compressor 2 . The indoor air is given heat by heat exchange with the refrigerant in the indoor heat exchanger 6 which works as a condenser. Such a cycle is repeated to heat the room.

FIG. 3 is a side sectional view of the indoor unit of the air conditioner.
As shown in FIG. 3 , the housing of the indoor unit 100 accommodates internal structures such as the indoor heat exchanger 6 . The housing is composed of a housing base 11, a decorative frame 12, a front panel 13, and the like. A decorative frame 12 and the like are attached to the housing base 11 . A front panel 13 and the like are attached to the decorative frame 12 . These elements are assembled to form a housing that encloses the internal structure.

An upper surface air suction port 15 for sucking indoor air into the housing is opened on the upper surface of the housing. The upper air suction port 15 is not covered with a lid or the like, and is always open. A front air suction port 16 for sucking indoor air into the housing is open on the upper side of the front surface of the housing. An air outlet 17 for blowing air from the inside of the housing into the room is open from the lower side of the front surface of the housing to the front side of the lower surface.

Above the upper air suction port 15, an upper filter 15a is detachably attached. A front filter 16 a is detachably attached in front of the front air suction port 16 . These filters 15a and 16a are provided to remove dust and the like from the air sucked into the housing. The upper filter 15a is provided with a filter cleaning mechanism that moves on the filter in the longitudinal direction and cleans it in order to remove dust and the like adhering to the filter.

A front panel 13 is attached to the front surface of the decorative frame 12 . A panel member 30 is arranged below the front panel 13 . The panel member 30 is provided with a display section, a sensor section, and a light receiving section. The display unit is composed of a lamp or the like, and lights according to the operating state to indicate the operating state to the user. The sensor unit is composed of a CCD (Charge Coupled Device) image sensor or the like that detects movement in the room. The light-receiving unit is composed of an infrared sensor or the like, and receives an infrared operation signal from the remote controller 300 .

The front panel 13 is arranged so as to cover the front air suction port 16 and is provided so as to be openable and closable. A rotating shaft is formed on the lower end side of the front panel 13 . The rotating shaft of the front panel 13 is rotatably supported on the lower side of the front surface of the decorative frame 12 . The front panel 13 can be opened with the upper side tilted toward the front side by rotating around the rotating shaft on the lower end side. When the front panel 13 is opened, the front air inlet 16 is opened. In addition, the structure which the front panel 13 does not rotate may be sufficient.

An indoor heat exchanger 6 is arranged inside the housing of the indoor unit 100 . The indoor heat exchanger 6 is formed of a heat transfer tube through which a refrigerant flows and a plurality of fins joined to the heat transfer tube. The fins of the indoor heat exchanger 6 are provided to have an inverted V shape when the indoor unit 100 is viewed in cross section from the side. Below the indoor heat exchanger 6, an indoor blower fan 8 is arranged substantially in the center of a housing surrounded by inverted V-shaped fins.

The indoor blower fan 8 is configured by a cross-flow fan. The indoor blower fan 8 is provided in a cylindrical shape, and has a plurality of blades parallel to each other radially along the outer periphery. The indoor blower fan 8 has a rotating shaft arranged parallel to the lateral direction of the housing. The indoor blower fan 8 sucks in air and blows out air when it is driven to rotate about its rotation axis.

Below the indoor blower fan 8, an air outlet 17 is opened from the lower side of the front surface of the housing to the front side of the lower surface. An indoor blower fan 8 is arranged on the downstream side of the indoor heat exchanger 6 , and a ventilation passage 18 is formed up to an air outlet 17 . The air passage 18 forms a passage for sending the air heat-exchanged by the indoor heat exchanger 6 to the air outlet 17 .

The inner wall surface on the front side of the ventilation path 18 extends obliquely from the vicinity of the lower end of the indoor blower fan 8 to the lower side of the front surface of the housing in a side sectional view of the indoor unit 100 . A front portion of the inner wall surface on the front side of the ventilation passage 18 is formed by the lower surface of the front casing 19 . The rear portion of the inner wall surface on the front side of the ventilation passage 18 is formed by the lower surface of the drain pan 20 . The inner wall surface on the front side of the ventilation passage 18 is inclined downward toward the front side, forming a flat surface that is not substantially curved.

The front side casing 19 constitutes a part of the housing, and covers a region from the lower side of the front surface of the housing to the front side of the lower surface. The front casing 19 forms a wall covering between the panel member 30 and the air outlet 17 in a side sectional view of the indoor unit 100 . The rear portion of the lower surface of the front casing 19 is inclined so as to be positioned downward toward the front side, and faces downward of the ventilation passage 18 and the housing.

The drain pan 20 is arranged below the front portion of the indoor heat exchanger 6 and behind the front casing 19 so as to be sandwiched between the front casing 19 and the indoor blower fan 8 . A drain pan 20 is provided to receive dew condensation generated in the indoor heat exchanger 6 . The drain pan 20 is provided so as to have a U shape in a side cross-sectional view of the indoor unit 100 . The lower surface of the drain pan 20 is inclined downward toward the front side, and is flush with and continuous with the lower surface of the front casing 19 .

The inner wall surface on the rear side of the ventilation path 18 curves and extends from near the rear end of the indoor blower fan 8 to near the center of the lower surface of the housing when the indoor unit 100 is viewed in cross section from the side. A lower portion of the inner wall surface on the rear side of the ventilation passage 18 is formed by the upper surface of the rear casing 21 . The lower portion of the inner wall surface on the rear side of the ventilation passage 18 is inclined downward toward the front side. The upper portion of the inner wall surface on the rear side of the ventilation passage 18 is formed by the front surface of the rear casing 22 . The upper part of the inner wall surface on the rear side of the ventilation passage 18 is curved so as to protrude rearward.

The rear casing 21 forms part of the housing and covers the rear area of the lower surface of the housing. The rear casing 21 is provided in a nose shape in which the front side is bent upward so as to form an acute triangular shape in a side cross-sectional view of the indoor unit 100 . The upper surface of the rear casing 21 is inclined downward toward the front side, forming a wall surface extending inward from the rear end of the air outlet 17 .

The rear casing 22 is arranged behind the indoor blower fan 8 and above the rear casing 21 . The rear casing 22 is provided as a curved plate curved with a curvature smaller than that of the cylindrical indoor blower fan 8 . The upper end side of the rear casing 22 is tangentially close to the vicinity of the rear end of the indoor blower fan 8 . The rear casing 22 is curved so that the distance from the central axis of the indoor blower fan 8 gradually increases as it goes downward. The lower end side of the rear casing 22 continues flush with the inclined upper surface of the rear casing 21 .

A partition casing 23 is arranged above the rear casing 22 to partition the indoor blower fan 8 and the indoor heat exchanger 6 . The partition casing 23 is sandwiched between the indoor blower fan 8 and the rear portion of the indoor heat exchanger 6 . The partition casing 23 is provided in the shape of a thin plate, and is provided for the purpose of reducing the intake of dew condensation generated in the indoor heat exchanger 6 into the indoor blower fan 8 . The upper end side of the partition casing 23 is tangentially close to above the rear end of the indoor blower fan 8 . The lower end side of the partition casing 23 is flush with the curved front surface of the rear casing 22 and continues.

In the indoor unit 100 , when the indoor blower fan 8 is driven, indoor air is sucked into the housing from the top air inlet 15 and the front air inlet 16 and sent to the indoor heat exchanger 6 . The air sucked from the room is heat-exchanged with the refrigerant in the indoor heat exchanger 6 . The heat-exchanged air is sucked from the indoor heat exchanger 6 into the indoor ventilation fan 8 and discharged from the indoor ventilation fan 8 to the ventilation passage 18 . The air discharged from the indoor blower fan 8 passes through the ventilation path 18 and is blown into the room from the air outlet 17 .

The air outlet 17 is provided with vertical wind direction plates 24 and 25 for vertically changing the wind direction of the air blown into the room and a plurality of left and right wind direction plates 26 for changing the wind direction of the air blown into the room to the left and right. . As the vertical airflow direction plates 24 and 25 , a front side vertical airflow direction plate 24 is provided on the front side of the air outlet 17 . A rear vertical wind direction plate 25 is provided on the rear side of the air outlet 17 .

The front up-down wind direction plate 24 is arranged so as to cover the front casing 19 and is provided so as to be openable and closable. A rotating shaft is formed on the rear end side of the front vertical wind direction plate 24 . The rotation axis of the front vertical wind direction plate 24 is rotatably supported near the rear end of the lower surface of the front casing 19 on the front side of the air outlet 17 . The front up/down wind direction plate 24 can be rotated around the rotation shaft on the rear end side so that the front side can be vertically opened and closed.

The rear up-down wind direction plate 25 is arranged so as to cover the air outlet 17 and is provided so as to be openable and closable. A rotating shaft is formed on the rear end side of the rear vertical wind direction plate 25 . The rotation axis of the rear vertical wind direction plate 25 is rotatably supported near the lower end of the upper surface of the rear casing 21 on the rear side of the air outlet 17 . The rear up/down wind direction plate 25 can be rotated about the rotation shaft on the rear end side so that the front side can be vertically opened and closed.

The left/right airflow direction plate 26 is arranged inside the air outlet 17 and on the outlet side of the ventilation passage 18 . The left/right wind direction plates 26 are arranged along the left/right direction of the indoor unit 100 with a space therebetween. A rotating shaft is formed on the rear end side of the left/right wind direction plate 26 . The rotation axis of the left/right wind direction plate 26 is rotatably supported near the center of the upper surface of the rear casing 21 behind the air outlet 17 . The left/right wind direction plate 26 can rotate about the rotation shaft on the rear end side, and the front side can swing left and right.

The operation of the front up/down airflow direction plate 24, the rear side up/down airflow direction plate 25, and the left/right airflow direction plate 26 is controlled by the control unit to adjust the wind direction. The front up-down wind direction plate 24 and the rear up-down wind direction plate 25 are closed when the air conditioner AC is stopped. On the other hand, during cooling operation, heating operation, and dehumidifying operation, the opening is controlled to an arbitrary or variable opening. The left/right airflow direction plate 26 is controlled to have an arbitrary or variable inclination during operation, and deflects the blown air in the left/right direction.

When the vertical wind direction plates 24 and 25 are opened, the air outlet 17 is opened to form an air passage from the inside of the ventilation passage 18 toward the interior. When the vertical airflow direction plates 24 and 25 are open, the upper surfaces of the vertical airflow direction plates 24 and 25 face the interior of the room and can be visually recognized by the user. Moreover, the side surface of the left/right wind direction plate 26 becomes visible to the user. When the vertical airflow direction plates 24 and 25 are closed, the upper surfaces of the vertical airflow direction plates 24 and 25 face the inside of the housing and become the bottom of the ventilation passage 18 . Dust and the like that may fall from the indoor heat exchanger 6 and the indoor blower fan 8 tend to adhere to the upper surfaces of the vertical wind direction plates 24 and 25 and the left and right wind direction plates 26 .

In the indoor unit 100 of the air conditioner AC according to the present embodiment, at least part of the ventilation passage 18 on the downstream side of the indoor heat exchanger 6 or at least part of the vertical wind direction plates 24 and 25 is provided with a copper plate or a copper alloy. It has a configuration in which plates are arranged in a curved shape. Dust, microorganisms, viruses entrained in the airflow, condensed water scattered from the heat exchanger, etc., easily come into contact with the members forming the ventilation passage 18 on the downstream side of the indoor heat exchanger 6 and the vertical wind direction plates 24, 25. It is a place. A curved copper plate or a curved copper alloy plate is arranged on at least the surface of such a portion.

The curved copper plate or copper alloy plate may be arranged in at least part of the ventilation passage 18, may be arranged in at least part of the vertical wind direction plates 24 and 25, or may be arranged in both of them. good. The curved copper plate or copper alloy plate is, for example, a front casing 19 and a drain pan 20 which are members forming the front inner wall surface of the ventilation passage 18, and a rear casing which is a member forming the rear inner wall surface of the ventilation passage 18. 21 and a rear casing 22, a partition casing 23 which is a member that partitions between the indoor blower fan 8 and the indoor heat exchanger 6, a casing forming the left and right inner wall surfaces of the ventilation passage 18, the indoor blower fan 8, and a left and right wind direction plate 26. etc., or as at least a part of any one of the vertical wind direction plates for opening and closing the ventilation passage 18, for example, the front side vertical direction plate 24, the rear side vertical direction plate 25, and the like.

The curved copper plate or copper alloy plate may be arranged as a structural member forming the housing, a member forming the ventilation passage 18, or the like so as to constitute one or more of them. Alternatively, it may be attached to the surface side of the structural material that forms the housing, the member that forms the ventilation path 18, the vertical wind direction plates 24 and 25, etc., so as to form a part of one or more of them. The curved copper plate or copper alloy plate is applied to the surfaces of the members forming the air passage 18, the vertical wind direction plates 24 and 25, etc., by welding such as brazing or fusion welding, mechanical joining using screws or the like, or bonding with an adhesive. It can be attached by an appropriate method, such as adhesion using, etc., or fixation using a fixture.

Conventionally, as in Patent Document 1 and Patent Document 2, techniques have been developed in which a stainless steel plate or an aluminum plate is used for the wall surface of the ventilation passage and the surface of the vertical airflow direction plate that come into contact with the airflow. Placing a stainless steel plate or an aluminum plate smoothes the surface in contact with the airflow. Therefore, it can be said that the adhesion of dust, microorganisms such as bacteria and mold, and viruses can be suppressed to a certain extent regardless of whether ultraviolet light for sterilization is irradiated or not.

However, the stainless steel plate and aluminum plate do not have high antibacterial and antiviral properties of the metal itself. Therefore, measures are desired to keep surfaces in contact with the airflow clean for a longer period of time. In addition, the front inner wall surface of the ventilation passage 18, the rear inner wall surface of the ventilation passage 18, the left and right inner wall surfaces of the ventilation passage 18, the surface of the indoor blower fan 8, the surfaces of the vertical wind direction plates 24 and 25, The surfaces of the left and right airflow direction plates 26 are not only prone to dust and the like, but also easily visible to users in the room. Such portions are desired to have a high degree of designability in terms of appearance.

On the other hand, when a copper plate or copper alloy plate is curved and arranged in at least a part of the ventilation passage 18 on the downstream side of the indoor heat exchanger 6, the copper itself forming these surfaces has high antibacterial and antiviral properties. show. Therefore, it is possible to sterilize or inactivate microorganisms such as bacteria and mold, viruses, etc., and keep the surface of the indoor unit 100 in contact with the airflow clean for a long period of time. In addition, since metallic luster or the like is exhibited, the design of the indoor unit 100 can be enhanced.

Conventionally, it is known that rolling a thin metal plate causes waviness. The rippling phenomenon is a phenomenon in which a metal plate undulates along the rolling direction, and is caused by non-uniform elongation in the rolling direction in the width direction. The waviness phenomenon is more likely to occur as the hardness of the metal plate increases and as the thickness of the metal plate decreases. A wavy metal sheet is unsuitable for improving designability because it flexes in a wavy shape along the rolling direction.

However, the member forming the inner wall surface on the front side of the ventilation passage 18, the member forming the inner wall surface on the rear side of the ventilation passage 18, the housing of the indoor blower fan 8, and the vertical wind direction plates 24 and 25 are curved. It is often provided in shape. In such a curved portion, even if the metal plate is wavy, the wavy deflection can be made inconspicuous by arranging the metal plate in a curved manner. Therefore, regardless of the hardness and thickness of the metal plate, the design of the indoor unit 100 can be enhanced by using the copper plate or the copper alloy plate obtained by bending the rolled material.

In addition, since conventional aluminum plates and the like have low hardness, they are easily scratched when wiped by a user. Appearance is spoiled when a scratch is generated in a location that is easily visible to the user. However, when a curved copper plate or copper alloy plate is used, the wave-like deflection is not conspicuous, so that high hardness is allowed. High hardness can be achieved by adjusting the amount of addition of an appropriate alloying element or by work hardening. Arranging a copper plate or copper alloy plate with a high hardness makes it difficult to cause scratches when wiped, so that the design of the indoor unit 100 can be improved.

In the indoor unit 100, at least a part of the ventilation path 18 on the downstream side of the indoor heat exchanger 6 or at least a part of the vertical wind direction plates 24 and 25 are curved and arranged flat. A flat copper plate or flat copper alloy plate having a similar shape may be arranged. The flat copper plate and the flat copper alloy plate are flat plates that are not subjected to bending and have a remarkably smaller curvature than the copper plate or the copper alloy plate that is curved.

The flat copper plate or flat copper alloy plate may be arranged in at least a part of the ventilation passage 18, may be arranged in at least a part of the vertical wind direction plates 24 and 25, or may be arranged in both of them. good. A flat copper plate or a flat copper alloy plate is, for example, a front casing 19 and a drain pan 20 which are members forming the front inner wall surface of the ventilation passage 18, and a rear casing which is a member forming the rear inner wall surface of the ventilation passage 18. 21, a partition casing 23 that is a member that partitions between the indoor blower fan 8 and the indoor heat exchanger 6, a casing that forms the left and right inner wall surfaces of the ventilation passage 18, the indoor blower fan 8, the left and right wind direction plates 26, etc., and the ventilation It can be used as at least a part of any one of the vertical wind direction plates for opening and closing the passage 18, for example, the front side vertical direction plate 24, the rear side vertical direction plate 25, and the like.

A flat copper plate or a flat copper alloy plate may be arranged as a structural member forming a housing, a member forming a ventilation passage 18, or the like so as to constitute one or more of them. Alternatively, it may be attached to the surface side of the structural material that forms the housing, the member that forms the ventilation path 18, the vertical wind direction plates 24 and 25, etc., so as to form a part of one or more of them. The flat copper plate or flat copper alloy plate is applied to the surface of the member forming the air passage 18, the vertical wind direction plates 24 and 25, etc., by welding such as brazing or fusion welding, mechanical joining using screws or the like, or bonding with an adhesive. It can be attached by an appropriate method, such as adhesion using, etc., or fixation using a fixture.

FIG. 4 is a side cross-sectional view of the indoor unit showing locations where curved copper plates, copper alloy plates, flat copper plates, and flat copper alloy plates are arranged.
FIG. 4 shows specific examples of places where curved copper plates, copper alloy plates, flat copper plates, and flat copper alloy plates are preferably arranged. In FIG. 4, reference numeral 110 denotes a copper plate or copper alloy plate provided in a curved shape. Reference numeral 120 denotes a flat copper plate or flat copper alloy plate provided in a flat flat shape.

However, the curved copper plate or copper alloy plate can also be arranged at the place where the flat copper plate or flat copper alloy plate is arranged among the places shown in FIG. Further, the flat copper plate or the flat copper alloy plate can be arranged at a portion where the curved copper plate or copper alloy plate is arranged among the locations shown in FIG. In FIG. 4, the curved copper plate, the copper alloy plate, the flat copper plate, and the flat copper alloy plate are arranged on the surface where the airflow contacts. It may be arranged as a structural member forming a housing having a contact surface. Moreover, it may be arranged in the depth direction of FIG.

When the curved copper plate or copper alloy plate is used for the front casing 19 , it is attached at least to the lower surface of the front casing 19 , provided as a member forming the lower surface of the front casing 19 , or provided as a member forming the entire front casing 19 . It is preferable to use as Although the lower surface of the front casing 19 is provided as a flat surface in FIG. 4, it can be provided as a curved surface when a curved copper plate or copper alloy plate is used. When the flat copper plate or flat copper alloy plate is used for the front casing 19, it is preferable to arrange it in the same manner as the curved copper plate or copper alloy plate.

When the curved copper plate or copper alloy plate is used for the drain pan 20, it is attached at least to the lower surface of the drain pan 20, provided as a member forming the lower surface of the drain pan 20, or used as a member constituting the entire drain pan 20. is preferred. In FIG. 4, the downwardly facing lower surface of the drain pan 20 is provided as a flat surface, but it can be provided as a curved surface when a curved copper plate or copper alloy plate is used. A flat copper plate or a flat copper alloy plate, when used for the drain pan 20, is preferably arranged in the same manner as the curved copper plate or copper alloy plate.

Further, when the curved copper plate or copper alloy plate is used for the rear casing 21, it may be bonded to at least the inclined upper surface of the rear casing 21, provided as a member forming the upper surface of the rear casing 21, or provided as a member forming the upper surface of the rear casing 21. It is preferable to use it as a member constituting the entire casing 21 . Although the upper surface of the rear casing 21 is provided as a flat surface in FIG. 4, it can be provided as a curved surface when using a curved copper plate or copper alloy plate. When the flat copper plate or flat copper alloy plate is used for the rear casing 21, it is preferable to arrange it in the same manner as the curved copper plate or copper alloy plate.

In addition, when the curved copper plate or copper alloy plate is used for the rear casing 22, it is bonded at least to the front surface of the rear casing 22, provided as a member forming the front surface of the rear casing 22, or constitutes the entire rear casing 22. It is preferable to use it as a member to carry out.

Further, when the curved copper plate or copper alloy plate is used for the partition casing 23, it is bonded at least to the front surface of the partition casing 23, provided as a member forming the front surface of the partition casing 23, or constitutes the entire partition casing 23. It is preferable to use it as a member to carry out. Although the partition casing 23 is provided as a flat plate in FIG. 4, it can be provided as a curved plate when a curved copper plate or copper alloy plate is used. A flat copper plate or a flat copper alloy plate, when used for the partition casing 23, is preferably arranged in the same manner as the curved copper plate or copper alloy plate.

In addition, when the curved copper plate or copper alloy plate is used for the indoor blower fan 8, it is attached at least to the surface of the housing of the indoor blower fan 8, or provided as a member forming the surface of the housing of the indoor blower fan 8. Alternatively, it is preferable to use it as a member constituting the housing of the indoor blower fan 8 . A curved copper plate or copper alloy plate may be provided as a fin of the indoor blower fan 8 . A flat copper plate or a flat copper alloy plate is preferably arranged as fins of the indoor blower fan 8 when used for the indoor blower fan 8 .

Further, when the curved copper plate or copper alloy plate is used for the front up/down wind direction plate 24, it may be attached to at least the upper surface of the front up/down wind direction plate 24, or may be provided as a member forming the upper surface of the front up/down wind direction plate 24. It is preferable to use it as a member constituting the entire up/down wind direction plate 24 . The curved copper plate or copper alloy plate may be attached to the lower surface of the front up-down wind direction plate 24 or may be provided as a member forming the lower surface of the front up-down wind direction plate 24 . When a flat copper plate or a flat copper alloy plate is used for the front up/down wind direction plate 24, it is preferable to arrange the curved copper plate or copper alloy plate in the same manner. In FIG. 4, the upper surface of the front up/down wind direction plate 24 is provided in a curved shape, but when using a flat copper plate or a flat copper alloy plate, it can be provided in a flat shape.

Further, when the curved copper plate or copper alloy plate is used for the rear up/down wind direction plate 25, it is bonded to at least the upper surface of the rear up/down wind direction plate 25 or provided as a member forming the upper surface of the rear up/down wind direction plate 25. Alternatively, it is preferable to use it as a member that constitutes the entire rear up/down wind direction plate 25 . The curved copper plate or copper alloy plate may be attached to the lower surface of the rear up-down wind direction plate 25 or may be provided as a member forming the lower surface of the rear up-down wind direction plate 25 . In FIG. 4, the rear up-down wind direction plate 25 is provided in a flat shape, but when using a curved copper plate or copper alloy plate, it can be provided in a curved shape. When a flat copper plate or a flat copper alloy plate is used for the rear up/down wind direction plate 25, it is preferable to arrange the curved copper plate or copper alloy plate in the same manner.

Further, when a curved copper plate or copper alloy plate is used for the left/right air deflector 26, it may be attached to at least the side surface of the left/right air deflector 26, or may be provided as a member forming the side surface of the left/right air deflector 26. It is preferable to use it as a member constituting the whole of. The curved copper plate or copper alloy plate may be provided on one of the left and right sides of the left/right wind direction plate 26, or may be provided on both the left and right sides. The left-right wind direction plate 26 is normally provided in a flat shape, but when using a curved copper plate or copper alloy plate, it can be provided in a curved shape in any one of the vertical direction, the front-back direction, and the left-right direction. When a flat copper plate or a flat copper alloy plate is used for the left/right airflow direction plate 26, it is preferable to arrange the curved copper plate or copper alloy plate in the same manner.

The curved copper plate or copper alloy plate can be provided in an appropriate curved shape as long as it conforms to the shape of the corresponding portion. Specific examples of the curved shape include an appropriate curved shape such as arc curve, J-curve, elliptical curve, involute curve, and clothoid curve. When using a plurality of curved copper plates or copper alloy plates in the indoor unit 100, the curved shapes of the plates may be the same or different.

The curved copper plate or copper alloy plate can be provided with an appropriate curvature as long as it conforms to the shape of the corresponding portion. The curvature of a curved copper plate or copper alloy plate is defined as the distance between two tangential planes that sandwich the plate. When using a plurality of curved copper plates or copper alloy plates in the indoor unit 100, the curvatures of the plates may be the same or different.

Materials for curved copper plates, copper alloy plates, flat copper plates and flat copper alloy plates include pure copper, copper-zinc alloys in which zinc is added to copper, copper-nickel alloys in which nickel is added to copper, and copper and nickel. and zinc-added copper-nickel-zinc alloy, copper-tin alloy in which tin is added to copper, copper-aluminum alloy in which aluminum is added to copper, and the like. The use of such materials provides high antibacterial and antiviral properties compared to other metal plates. In addition, high corrosion resistance can be obtained against the presence of moisture such as dew condensation water.

As a material for the curved copper plate, copper alloy plate, flat copper plate, or flat copper alloy plate, copper or a copper alloy having a copper content of 60% by mass or more is preferable. High-copper alloys with a copper content of 60% by mass or more are known to exhibit particularly high antibacterial and antiviral properties. With such materials, the excellent antibacterial and antiviral properties of copper itself can keep surfaces in contact with the airflow clean for a long period of time.

A copper-zinc alloy or a copper-nickel-zinc alloy is more preferable as a material for the curved copper alloy plate and the flat copper alloy plate. The copper-zinc alloy preferably has a Zn content of 20% by mass or more. The copper-nickel-zinc alloy preferably has a Zn content of 13.5% by mass or more and 24.5% by mass or less. Also, the Ni content is preferably 16.5% by mass or more and 19.5% by mass or less.

In particular, as materials for curved copper alloy plates and flat copper alloy plates, from the viewpoint of mechanical strength and aesthetics, Cu is 62.0% by mass or more and 66.0% by mass or less, and Pb is 0.03% by mass or less. , Fe is 0.25% by mass or less, Zn is 13.7% by mass or more and 21.5% by mass or less, Mn is 0.50% by mass or less, and the balance is Ni and unavoidable impurities. Copper-nickel-zinc Nickel silver equivalent to C7521, which is an alloy, is preferred.

Copper-zinc alloys and copper-nickel-zinc alloys are suitable copper alloys for obtaining high strength and high hardness. When such a material is used, high rigidity and high hardness can be easily obtained by adding an appropriate amount of alloying elements and work hardening. If the material is highly rigid, it becomes possible to employ thin plates. Also, the high hardness of the material makes it less prone to scratches when wiped by the user. Therefore, using such a material can improve the maintainability and design of the indoor unit 100 .

A curved copper plate or copper alloy plate can be produced, for example, by subjecting a flat rolled material to press molding, bending, or the like to curve it. The surface of the curved copper plate, copper alloy plate, flat copper plate, or flat copper alloy plate may be subjected to polishing treatment, plating treatment such as silver plating or nickel plating, or painting treatment.

The curved copper plate, copper alloy plate, flat copper plate, or flat copper alloy plate may be formed of a material as manufactured, may be formed of a material that has undergone a predetermined annealing treatment, or may be formed of a material that has been subjected to a predetermined annealing treatment. It may be formed of a material that has undergone a work hardening treatment. By applying work hardening treatment, appropriate hardness and tensile strength can be adjusted such as a high Vickers hardness (HV) of 185 or more and a high tensile strength of 610 MPa or more.

The curved copper plate or copper alloy plate preferably has a Vickers hardness of 185 or higher. If the Vickers hardness is 185 or more, waviness tends to occur during rolling of the material. However, with respect to the plate arranged at the curved portion, even if the undulation phenomenon occurs, the bending due to the undulation phenomenon becomes inconspicuous. Therefore, if the Vickers hardness is 185 or more, it is possible to improve the design of the indoor unit 100 while ensuring the rigidity and scratch resistance of the corresponding portions.

On the other hand, the flat copper plate and the flat copper alloy plate preferably have a Vickers hardness of less than 185. When the Vickers hardness is less than 185, waviness is less likely to occur during rolling of the material. For a plate placed on a flat surface, a low-hardness material that hardly causes the waving phenomenon is suitable because the bending due to the waving phenomenon is likely to be conspicuous. However, when the Vickers hardness is less than 185, the strength is low and the rigidity of the material itself is low. However, the rigidity required for the place where it is arranged can be ensured by increasing the thickness.

The curved copper plate, copper alloy plate, flat copper plate, and flat copper alloy plate preferably have a tensile strength of 610 MPa or more. When the tensile strength is 610 MPa or more, burrs generated on the end face of the plate can be reduced when the copper plate is punched out during press molding. Further, even if a local load is applied by hanging or the like during removal from the press molding machine or transportation, the plate can be prevented from being significantly deformed.

A curved copper plate, a copper alloy plate, a flat copper plate, or a flat copper alloy plate can be provided with an appropriate thickness as long as the thickness and weight are suitable for the place where they are arranged. In indoor unit 100, when a plurality of curved copper plates or copper alloy plates or a plurality of flat copper plates or flat copper alloy plates are used, the thicknesses of these plates may be the same or different. may However, it is preferable that the thicknesses of the plates be adjusted according to the place where they are arranged from the viewpoint of cost, moldability, rigidity, and the like.

The curved copper plate or copper alloy plate preferably has a thickness of 0.1 mm or less. When the thickness is 0.1 mm or less, if the Vickers hardness is 185 or more, waviness tends to occur during rolling of the material. However, with respect to the plate arranged at the curved portion, even if the waving phenomenon occurs, the bending caused by the waving phenomenon is not conspicuous. Therefore, if the thickness is set to 0.1 mm or less, it is possible to improve the design of the indoor unit 100, reduce the cost of raw materials, ensure curving formability, and reduce the weight.

On the other hand, the flat copper plate and flat copper alloy plate preferably have a thickness of more than 0.1 mm, and more preferably have a thickness of 0.11 mm or more. The thickness of the flat copper plate or flat copper alloy plate is preferably 0.12 mm or more and 0.18 mm or less, and preferably about 0.15 mm. When the thickness exceeds 0.1 mm, it is possible to easily secure the rigidity of the place where the plate is arranged. A flat copper plate or a flat copper alloy plate does not need to be bent, so it is allowed to be thickened.

FIG. 5 is a bottom perspective view of the indoor unit of the air conditioner when operation is stopped. FIG. 6 is a bottom perspective view of the indoor unit of the air conditioner during operation.
As shown in FIGS. 5 and 6, the front up-down wind direction plate 24 can be provided in a structure divided into a plurality of pieces along the left-right direction of the housing. A curved copper plate, a copper alloy plate, a flat copper plate, or a flat copper alloy plate can be arranged on all or part of the divided front up-down wind direction plates 24 .

5 and 6, the front vertical wind direction plate 24 is divided into three parts along the left-right direction of the housing, and is composed of a left side vertical direction plate 24a, a center vertical direction plate 24b, and a right side vertical direction plate 24c. It is The left up-down wind direction plate 24a, the center up-down wind direction plate 24b and the right up-down direction plate 24c can be provided so as to open and close independently of each other.

As shown in FIG. 5, when the operation of the indoor unit 100 is stopped, the left up-down wind direction plate 24a, the center up-down direction plate 24b, the right side up-down direction plate 24c, and the rear side up-down direction plate 25 are closed, and the upper surfaces of these are closed. facing the inside of the body. If a curved copper plate, a copper alloy plate, a flat copper plate, or a flat copper alloy plate is arranged on these upper surfaces, dust, microorganisms, viruses, condensed water, etc. falling from the indoor heat exchanger 6 or the indoor blower fan 8 will be received. be done. Therefore, the upper surfaces of the front up-down wind direction plate 24 and the rear up-down wind direction plate 25 can be kept clean due to the smoothness of the surface of the plate and the high antibacterial and antiviral properties exhibited by copper itself.

On the other hand, as shown in FIG. 6, when the indoor unit 100 is in operation, the left up-down wind direction plate 24a, the center up-down direction plate 24b, the right side up-down direction plate 24c, and the rear side up-down direction plate 25 are open, and the upper surfaces of these are open. facing inward. If a curved copper plate, a copper alloy plate, a flat copper plate, or a flat copper alloy plate are arranged on these upper surfaces, the upper surfaces of the front up-down wind direction plate 24 and the rear up-down wind direction plate 25, which are easily visible to the user during driving, are made of metal. The gloss of the interior unit 100 is enhanced.

FIG. 7 is a side sectional view showing an enlarged air outlet of the indoor unit of the air conditioner.
As shown in FIG. 7 , the indoor unit 100 preferably includes at least a curved copper plate or copper alloy plate 110 on the upper surface of the front up/down wind direction plate 24 . Moreover, it is preferable to provide a flat copper plate or a flat copper alloy plate 120 on the upper surface of the rear vertical wind direction plate 25 .

In FIG. 7 , the front vertical airflow direction plate 24 is provided in a curved shape so as to protrude downward when viewed in cross section from the side of the indoor unit 100 . The rear up/down wind direction plate 25 is provided in a flat shape that is not substantially curved in a side sectional view of the indoor unit 100 . The width of the front up/down wind direction plate 24 , that is, the length along the longitudinal direction of the indoor unit 100 is larger than that of the rear up/down wind direction plate 25 .

According to the curved front vertical airflow direction plate 24, in a side cross-sectional view of the indoor unit 100, it is possible to provide a curved contour extending from the lower side of the front surface of the housing to the front side of the lower surface. Further, the air blown from the air outlet 17 can be deflected forward along the upper surface of the front up-down wind direction plate 24 . In addition, with the flat rear up/down wind direction plate 25, the lower surface of the housing can be flatly closed when the operation of the indoor unit 100 is stopped.

If the curved copper plate or copper alloy plate 110 and the flat copper plate or flat copper alloy plate 120 are combined and arranged in such a place, the function of the front up-down wind direction plate 24 and the rear side up-down wind direction plate 25 and the curved outline The cleanliness and design of the indoor unit 100 can be further improved while ensuring the design. If a curved copper plate or copper alloy plate 110 is arranged on the front vertical airflow direction plate 24 having a large width in the lateral direction, the bending caused by the waving phenomenon is less noticeable, so that a large-area metal surface with high designability can be used as the front surface of the housing. Obtained from the underside to the front side of the underside.

If the curved copper plate or copper alloy plate 110 or the flat copper plate or flat copper alloy plate 120 is provided on the upper surface of the front vertical airflow direction plate 24 or the rear vertical airflow direction plate 25 or the side surface of the left/right airflow direction plate 26 , Although the design of the appearance of the indoor unit 100 is enhanced during operation, if it is provided on the lower surface of the front up-down wind direction plate 24 or the rear up-down wind direction plate 25, the appearance of the design can be enhanced when the operation of the indoor unit 100 is stopped. can be done.

The curved copper plate or copper alloy plate 110 is curved by bending, and the flat copper plate or flat copper alloy plate 120 is not bent and is more curved than the curved copper plate or copper alloy plate 110 . rate is small. By using such a curved copper plate or copper alloy plate 110, it is possible to obtain a unique shape design of a curved plate that cannot be obtained with a flat plate alone. For the curved copper plate or copper alloy plate 110 and the flat copper plate or flat copper alloy plate 120, by adjusting the amount of alloying elements added, the conditions for work hardening treatment, the thickness, etc., while ensuring appropriate hardness and rigidity, A sense of unity can be obtained with the same color tone and gloss.

Next, a method of attaching metal sheets 110 and 120, which are curved copper plates or copper alloy plates 110 or flat copper plates or flat copper alloy plates 120, to the upper surface of the front up-down wind direction plate 24 or the upper surface of the rear up-down wind direction plate 25. An example will be described with reference to the drawings.

As shown in FIG. 7, the metal sheet 110 can be fixed to the upper surface of the front vertical wind direction plate 24 using a cover 150 that holds the front end. Also, the metal sheet 120 can be fixed to the upper surface of the rear up/down wind direction plate 25 using a cover 160 that holds the front end. Such a fixing method can be applied even if the curved copper plate or copper alloy plate 110 and the flat copper plate or flat copper alloy plate 120 are exchanged.

FIG. 8 is a perspective view of the front up-down wind direction plate showing how to attach the metal sheet. FIG. 9 is a perspective view of the front up-down wind direction plate showing a state in which the metal sheet is attached. FIG. 10 is a perspective view of a cover used for attaching a metal sheet to the front vertical wind direction plate.
As shown in FIGS. 8 and 9, the metal sheet 110 can be attached to the upper surface of the front vertical wind direction plate 24 using a cover 150 that fixes the front end side of the metal sheet 110 . The front vertical wind direction plate 24 is preferably provided in a structure to which the cover 150 is fixed.

As shown in FIG. 8, a convex locking portion 111 is formed in the middle portion in the left-right direction of the rear end of the metal sheet 110 . Locking portion 111 is formed such that the rear end of metal sheet 110 protrudes rearward. The locking portion 111 can be formed by an appropriate processing method such as punching or cutting. In FIG. 8, a total of two locking portions 111 are provided in a line-symmetrical manner with respect to the central axis in the left-right direction, and protrude rearward in a substantially trapezoidal shape.

A bearing portion 240 that is a sliding bearing is provided at the left end of the rear end of the front vertical wind direction plate 24 . A connecting portion 241 connected to the drive shaft is provided at the right end of the rear end of the front vertical wind direction plate 24 . The bearing portion 240 and the connecting portion 241 are respectively supported on the upper surface side of the rear end of the front up/down wind direction plate 24 via an arm portion 242 extending vertically in a plate shape.

A fixed shaft provided on the front side of the air outlet 17 is inserted into the bearing portion 240 . The fixed shaft is slidably supported by the bearing portion 240 . A drive shaft provided on the front side of the air outlet 17 is inserted into the connecting portion 241 . The drive shaft is fixed to the connecting portion 241 and driven to rotate by the motor based on the control of the wind direction. The front up/down wind direction plate 24 is provided so that the front side opens and closes up and down around a rotating shaft formed by the bearing portion 240 and the connecting portion 241 .

Folded portions 244 are provided at the left and right side ends of the front vertical wind direction plate 24 from the front end to the rear end. The folded portion 244 is formed by folding back the side end of the main body portion of the front vertical wind direction plate 24 inward on the upper surface side. Between the main body portion of the front up/down wind direction plate 24 and the folded portion 244, a gap large enough to accommodate the metal sheet 110 is formed.

A wall-shaped rear edge portion 245 is provided at the rear end of the front vertical wind direction plate 24 from the right end to the left end. The rear edge portion 245 is provided in the form of a wall that rises on the upper surface side of the front vertical wind direction plate 24 . The rear edge portion 245 is provided at approximately the same height as the folded portion 244 with respect to the main body portion of the front vertical wind direction plate 24 .

A recessed engagement slit 246 is formed in the middle portion of the rear edge portion 245 in the left-right direction. The locking slit 246 is provided in a recess shape in which the lower side of the front end of the wall-shaped rear edge portion 245 is recessed toward the rear. In FIG. 8, two locking slits 246 are provided in line symmetry with respect to the central axis in the left-right direction so as to correspond to the locking portion 111 of the metal sheet 110. It has a trapezoidal thinned shape.

At the front end of the front up/down wind direction plate 24, a claw receiving portion 248 projecting forward and a claw receiving portion 249 projecting rearward are provided in the middle portion in the left-right direction. A plurality of claw receiving portions 248 projecting forward and claw receiving portions 249 projecting rearward are provided along the front end of the front up-down wind direction plate 24 and arranged alternately.

The claw receiving portion 248 protruding forward is provided in a shape in which the tip side is folded forward from the upper surface side of the front end of the front vertical wind direction plate 24 . The claw receiving portion 249 protruding rearward is provided in a shape in which the tip end side is folded back from the upper surface side of the front end of the front vertical wind direction plate 24 .

The cover 150 is provided in the shape of an elongated rectangular plate. The length of the cover 150 is equal to the length of the front up-down wind direction plate 24 in the left-right direction. The cover 150 is detachably attached along the front end of the front vertical wind direction plate 24 and arranged to form the outer frame of the metal sheet 110 together with the folded portion 244 and the rear edge portion 245 . The metal sheet 110 is held visible within this outer frame.

As shown in FIG. 10, the lower surface of the cover 150 is provided with a claw portion 158 projecting rearward and a claw portion 159 projecting forward. A plurality of claw portions 158 protruding rearward and claw portions 159 protruding forward are provided along the longitudinal direction of the cover 150 and arranged alternately.

The cover 150, the claw portion 158 projecting backward, and the claw portion 159 projecting forward can be made of resin or the like, for example. The rearwardly projecting claw portion 158 and the forwardly projecting claw portion 159 may be molded integrally with the body portion of the cover 150, or may be attached as components. The cover 150 may be provided in the same color tone as the front up/down wind direction plate 24, or may be provided in a different color tone.

The claw portion 158 protruding rearward is provided in a shape in which the tip side is folded back from the lower surface of the cover 150 toward the rear. The claw portion 159 protruding forward is provided in a shape in which the tip side is folded forward from the lower surface of the cover 150 . The claw portion 158 projecting rearward corresponds to the claw receiving portion 248 projecting forward provided on the front vertical wind direction plate 24 . The claw portion 159 projecting forward corresponds to the claw receiving portion 249 projecting backward provided on the front vertical wind direction plate 24 .

As shown in FIG. 8, when attaching the metal sheet 110 to the front up/down wind direction plate 24, the metal sheet 110 is inserted from the front into the gap between the main body portion and the folded portion 244 of the front up/down wind direction plate 24. . The metal sheet 110 is inserted from the rear end side where the engaging portion 111 is formed, and is inserted along the upper surface of the front vertical wind direction plate 24 until it contacts the rear edge portion 245 .

When the metal sheet 110 is inserted until it abuts against the rear edge 245 , the convex locking portion 111 formed on the metal sheet 110 fits into the concave locking slit 246 formed on the rear edge 245 . The claw receiving portions 248 and 249 provided at the front end of the front vertical wind direction plate 24 are exposed forward from the front end of the inserted metal sheet 110 .

Next, the lower surface of the cover 150 provided with the claw portions 158 and 159 and the front end of the front vertical wind direction plate 24 where the claw receiving portions 248 and 249 are exposed are separated into the claw portions 158 and 159 and the claw receiving portions 248 and 249. are shifted to the left and right so that they do not overlap each other. Then, the cover 150 is slid in the horizontal direction so that the claw portions 158 and 159 and the claw receiving portions 248 and 249 are engaged with each other.

When the cover 150 is slid and the claw portions 158 and 159 and the claw receiving portions 248 and 249 are engaged with each other, the cover 150 is fixed to the front end of the front vertical wind direction plate 24 . Forward movement of the metal sheet 110 is restricted by the cover 150 . Rearward movement of the metal sheet 110 is restricted by the trailing edge 245 . Further, the lateral movement of the metal sheet 110 is restricted by the folded portion 244 . The left and right side edges of the metal sheet 110 can be vertically fixed by the folded portion 244 .

Moreover, the rear end side of the metal sheet 110 can be fixed in the horizontal direction and the vertical direction by the structure in which the convex locking portion 111 and the concave locking slit 246 are engaged with each other. Moreover, the structure in which the claw portions 158 and 159 and the claw receiving portions 248 and 249 are engaged with each other allows the front end side of the metal sheet 110 to be fixed in the longitudinal direction and the vertical direction.

By using such a slide-type cover 150, the metal sheet 110 can be easily fixed to the front vertical wind direction plate 24. As shown in FIG. Since the metal sheet 110 is held within the outer frame formed by the cover 150, the folded portion 244 and the rear edge portion 245, when the indoor unit 100 is in operation, the metal surface with metallic luster or the like can be seen from the inside of the room. Become. In addition, since the metal surface is smooth, it is difficult for foreign matter to adhere to it, which facilitates wiping.

In FIG. 8, two locking portions 111 and two locking slits 246 are provided in line symmetry with respect to the central axis in the left-right direction, and are provided in a substantially trapezoidal shape. The portions 111 and locking slits 246 can be provided in an appropriate number, shape, and arrangement. Moreover, the claw portions 158 and 159 and the claw receiving portions 248 and 249 can be provided in an appropriate number, shape, and arrangement as long as they mesh with each other.

FIG. 11 is a perspective view of the rear up-down wind direction plate showing how to attach the metal sheet. FIG. 12 is a perspective view of the rear up-down wind direction plate showing a state in which the metal sheet is attached. FIG. 13 is a perspective view of a cover used for attaching a metal sheet to the rear up/down wind direction plate.
As shown in FIGS. 11 and 12, the metal sheet 120 can be attached to the upper surface of the rear vertical wind direction plate 25 using a cover 160 that fixes the front end side of the metal sheet 120 . The rear vertical wind direction plate 25 is preferably provided in a structure to which the cover 160 is fixed.

As shown in FIG. 11, a concave notch 121 is formed in the middle portion of the rear end of the metal sheet 120 in the left-right direction. The notch 121 is formed such that the rear end of the metal sheet 120 is notched in a concave shape toward the front. The notch 121 can be formed by an appropriate processing method such as punching or cutting. In FIG. 11, one notch 121 is provided in the central portion in the left-right direction, and the notch 121 is cut in a substantially rectangular shape toward the inside of the plane.

11 and 12, a heat insulating material 180 is interposed between the rear vertical wind direction plate 25 and the metal sheet 120. In FIG. A recessed notch 181 is formed in the middle of the rear end of the heat insulating material 180 in the left-right direction, similarly to the metal sheet 120 . The heat insulating material 180 can be made of, for example, urethane foam. The heat insulating material 180 is provided in a thin plate shape so as to be insertable between the rear vertical wind direction plate 25 and the metal sheet 120 .

In general, a large temperature difference is formed between the upper surface and the lower surface of the vertical wind direction plate because the air that has been heat-exchanged along the upper surface side is blown out. The temperature difference between the air in the room that contacts the bottom side and the air that blows out along the top side is particularly large during the heating operation compared to the cooling operation. If there is a large temperature difference, the plate may warp due to the difference in coefficient of thermal expansion. However, if the heat insulating material 180 is interposed, the temperature difference occurring between the vertical wind direction plates 24 and 25 can be suppressed, and thermal deformation can be prevented.

A bearing portion 250 that is a slide bearing is provided in the central portion of the rear end of the rear up/down wind direction plate 25 . A connecting portion 251 that is connected to the drive shaft is provided at the rear left end and the rear right end of the rear up/down wind direction plate 25 . The bearing portion 250 and the connecting portion 251 are supported on the upper surface side of the rear end of the rear up/down wind direction plate 25 via an arm portion 252 extending vertically in a plate shape. The central arm portion 252 is supported by a substantially rectangular base portion 253 provided on the front side of the central portion of the rear end of the rear vertical wind direction plate 25 .

A fixed shaft provided on the rear side of the air outlet 17 is inserted into the bearing portion 250 . The fixed shaft is slidably supported by the bearing portion 250 . A drive shaft provided on the rear side of the air outlet 17 is inserted into the connecting portion 251 . The drive shaft is fixed to the connecting portion 251 and driven to rotate by the motor based on the control of the wind direction. The rear up/down wind direction plate 25 is provided so that the front side opens and closes up and down around a rotation axis formed by the bearing portion 250 and the connecting portion 251 .

Folded portions 254 are provided at the left and right side ends of the rear vertical wind direction plate 25 from the front end to the rear end. The folded portion 254 is formed by folding back the side end of the body portion of the rear up/down wind direction plate 25 inward on the upper surface side. Between the main body portion of the rear up/down wind direction plate 25 and the folded portion 254, a gap large enough to accommodate the metal sheet 120 and the heat insulating material 180 is formed.

A wall-shaped rear edge portion 255 is provided at the rear end of the rear vertical wind direction plate 25 from the right end to the left end. The rear edge portion 255 is provided in the form of a wall that rises on the upper surface side of the rear vertical wind direction plate 25 . The rear edge portion 255 is provided at approximately the same height as the folded portion 254 with respect to the main body portion of the rear vertical wind direction plate 25 .

A folding piece 256 is formed in the middle portion of the rear edge portion 255 in the left-right direction. The folded piece 256 is provided in the shape of a plate that is folded forward from the upper end of the middle portion in the left-right direction of the wall-shaped rear edge portion 255 and protrudes. In FIG. 11, a total of two folding pieces 256 are provided in line symmetry with respect to the central axis in the left-right direction.

A wall-shaped front edge portion 257 is provided at the front end of the rear vertical wind direction plate 25 from the right end to the left end. The front edge portion 257 is provided in the shape of a wall that rises on the upper surface side of the rear vertical wind direction plate 25 . The front edge portion 257 is provided at approximately the same height as the folded portion 254 with respect to the main body portion of the rear vertical wind direction plate 25 .

A claw receiving portion 258 and a guide opening portion 259 are provided in the middle portion of the front edge portion 257 in the left-right direction. A plurality of claw receiving portions 258 and guide openings 259 are provided along the left-right direction of the front edge portion 257 and arranged alternately.

The claw receiving portion 258 penetrates the front edge portion 257 in the front-rear direction, and is provided in a rectangular tubular shape protruding forward from the front edge portion 257 . The guide opening 259 is provided as a rectangular opening extending in the front-rear direction of the front edge 257 . The claw receiving portion 258 and the guide opening portion 259 are opened side by side on the front surface of the front edge portion 257 .

The cover 160 is provided in the shape of an elongated rectangular plate. The length of the cover 160 is equal to the length of the rear up-down wind direction plate 25 in the left-right direction. The front edge portion 257 , the folded portion 254 and the rear edge portion 255 form the outer frame of the metal sheet 120 on the upper surface side of the rear vertical wind direction plate 25 . The cover 160 is detachably attached along the front end of the rear up/down wind direction plate 25 and arranged to cover the front end of the outer frame. The metal sheet 120 is held visible within this outer frame.

As shown in FIG. 13, the rear surface of the cover 160 is provided with a claw portion 168 protruding rearward and a guide portion 169 protruding rearward. A plurality of claw portions 168 protruding rearward and guide portions 169 protruding rearward are provided along the longitudinal direction of the cover 160 and arranged alternately.

The cover 160, the claw portion 168, and the guide portion 169 can be made of, for example, elastic resin or the like. The claw portion 168 and the guide portion 169 may be molded integrally with the main body portion of the cover 160, or may be attached as components. The cover 160 may be provided in the same color tone as the rear up/down wind direction plate 25, or may be provided in a different color tone.

The claw portion 168 protruding rearward is provided in the shape of a rectangular plate protruding rearward from the rear surface of the cover 160 . A barb is provided on the projecting tip side of the claw portion 168 . The rearwardly protruding guide portion 169 is provided in the shape of a rectangular plate that protrudes rearward from the rear surface of the cover 160 . The claw portion 168 protruding rearward corresponds to the claw receiving portion 258 provided on the rear vertical wind direction plate 25 . The guide portion 169 corresponds to the guide opening portion 259 provided in the rear up-down wind direction plate 25 .

As shown in FIG. 11 , when attaching the metal sheet 120 to the rear up/down wind direction plate 25 , the metal sheet 120 is placed from the front against the gap between the main body portion and the folded portion 254 of the rear up/down wind direction plate 25 . insert. The metal sheet 120 is inserted from the rear end side where the notch 121 is formed, and is inserted along the upper surface of the rear vertical wind direction plate 25 until it contacts the rear edge portion 255 . The heat insulating material 180 can be inserted below the metal sheet 120 by overlapping with the metal sheet 120 or the like.

When the metal sheet 120 is inserted until it abuts against the trailing edge 255 , the base 253 supporting the central arm 252 engages the notch 121 formed in the metal sheet 120 and the notch 181 formed in the insulation 180 . be fitted. The claw receiving portion 258 and the guide opening portion 259 which are open to the front surface of the front edge portion 257 are opened further forward than the front ends of the inserted metal sheet 120 and heat insulating material 180 .

Next, the rear surface of the cover 160 provided with the claw portion 168 and the guide portion 169 is opposed to the front surface of the front edge portion 257 in which the claw receiving portion 258 and the guide opening portion 259 are opened. Then, the cover is mounted on the front end side of the rear up-down wind direction plate 25 so that the claw portion 168 and the guide portion 169 of the cover 160 are inserted into the claw receiving portion 258 and the guide opening portion 259 of the rear up-down wind direction plate 25, respectively. 160 is fitted.

When the claw portion 168 of the cover 160 is inserted into the claw receiving portion 258 , the cover 160 is fixed to the front end of the rear vertical wind direction plate 25 . When the pawl portion 168 is inserted into the pawl receiving portion 258 , the distal end side of the pawl portion 168 is elastically deformed and passes through the pawl receiving portion 258 provided in a cylindrical shape. Since the tip side of the claw portion 168 is provided with a barb, the tip side of the claw portion 168 is difficult to come off from the claw receiving portion 258 .

Further, when the guide portion 169 of the cover 160 is inserted into the guide opening portion 259, the cover 160 is vertically fixed. Forward movement of the metal sheet 120 is restricted by the front edge 257 . Rearward movement of the metal sheet 120 is restricted by the trailing edge 255 . Further, the lateral movement of the metal sheet 120 is restricted by the folded portion 254 . The left and right side end sides of the metal sheet 120 can be fixed vertically by the folded portion 254 .

Further, the structure in which the concave notch 121 and the base 253 supporting the arm 252 are engaged allows the rear end side of the metal sheet 120 to be easily aligned and fixed in the left-right direction. Further, the rear end side of the metal sheet 120 can be vertically fixed by the folding piece 256 formed on the rear edge portion 255 . Moreover, the structure in which the claw portion 168 and the guide portion 169 are inserted into the claw receiving portion 258 and the guide opening portion 259 allows the front end side of the metal sheet 120 to be fixed in the longitudinal direction, the vertical direction and the lateral direction.

Using such an insert-type cover 160 makes it possible to easily fix the metal sheet 120 to the rear vertical wind direction plate 25 . Since the metal sheet 120 is held within the outer frame formed by the front edge portion 257, the folded portion 254, and the rear edge portion 255, the metal surface with metallic luster or the like can be seen from the inside of the room when the indoor unit 100 is in operation. become. In addition, since the metal surface is smooth, it is difficult for foreign matter to adhere to it, which facilitates wiping.

In FIG. 11, the notch 121 and the base portion 253 that supports the arm portion 252 are provided at the central portion in the left-right direction, and are provided in a substantially rectangular shape. , the base 253 that supports the arm 252 can be provided in an appropriate number, shape, and arrangement. Further, the claw portion 168, the guide portion 169, the claw receiving portion 258, and the guide opening portion 259 can be provided in an appropriate number, shape, and arrangement as long as they can be engaged with each other or their movement can be restricted.

The metal sheets 110 and 120, which are the curved copper plate or copper alloy plate 110 or the flat copper plate or flat copper alloy plate 120, may be hemmed at the front end, the left and right side ends, and the rear end. When punching out a plate during press molding, burrs may occur on the end face of the plate, but if hemming bending is performed to fold and crush the end, it is possible to prevent cuts, etc., when the user or manufacturer touches it. . The heat insulating material 180 may be interposed only in the rear vertical airflow direction plate 25, but may be interposed only in the front side vertical airflow direction plate 24, or may be interposed in both of them.

When attaching the metal sheets 110, 120, which are the curved copper plate or copper alloy plate 110 or the flat copper plate or flat copper alloy plate 120, to the front up-down wind direction plate 24 or the rear up-down wind direction plate 25, the sliding cover 150 and insertion are required. The cover 160 of the formula may be applied in exchange with each other, or a method different from these may be applied. In addition, when arranging as a member forming a part of the front up-down wind direction plate 24 or the rear up-down wind direction plate 25 or a member constituting the whole, the same joining method as that for the conventional members can be used.

Next, an example of a method of attaching a metal sheet 110, which is a curved copper plate or copper alloy plate 110, to the front surface of the rear casing 22 forming the rear wall surface of the ventilation passage 18 will be described with reference to the drawings.

FIG. 14 is a pre-assembly perspective view of the rear part of the indoor unit showing how to attach the metal sheet. FIG. 15 is a perspective view of the rear portion of the indoor unit before assembly, showing a state in which the metal sheet is attached.
As shown in FIGS. 14 and 15, the metal sheet 110 can be attached to the front surface of the rear casing 22 using fasteners 170 such as screws.

As shown in FIG. 14 , a plurality of through holes 115 are formed in the metal sheet 110 along the horizontal direction. In FIG. 14, a total of three through holes 115 are provided at the front end side of the metal sheet 110, at both left and right sides and at the center in the left and right direction.

A recessed notch 116 is formed in the middle portion of the rear end of the metal sheet 110 in the left-right direction. The notch 116 is formed such that the rear end of the metal sheet 110 is notched in a concave shape toward the front. The notch 116 can be formed by an appropriate processing method such as punching or cutting. In FIG. 14, one notch 116 is provided in the central portion in the left-right direction, and the notch 116 is cut in a substantially rectangular shape toward the inside of the plane.

The rear casing 22 is arranged in the rear part of the indoor unit 100 and in front of the lower part of the housing base 11 . The rear casing 22 is arranged above the rear casing 21 and below the partition casing 23 . The rear casing 22 is provided as a curved plate that projects rearward, and has a front surface curved forward. The rear casing 22 is made of resin or the like, for example, and forms the rear inner wall surface of the ventilation passage 18 .

A plurality of screw holes 222 are formed in the front surface of the rear casing 22 along the left-right direction. In FIG. 14, a total of three screw holes 222 are provided at the lower end side of the rear casing 22, at the left and right side ends and at the center in the left and right direction. Screw holes 222 correspond to through holes 115 formed in metal sheet 110 .

A protrusion 221 is formed in the middle portion of the upper end of the rear casing 22 in the left-right direction. The protrusion 221 protrudes forward from the front surface of the rear casing 22 . In FIG. 14, one projecting portion 221 is provided in the central portion of the rear casing 22 in the left-right direction, and protrudes forward in a substantially rectangular shape.

As shown in FIG. 14, when attaching the metal sheet 110 to the front surface of the rear casing 22, the metal sheet 110 is brought into contact with the front surface of the rear casing 22 so that the side on which the notch 116 is formed faces upward. . When the notches 116 formed in the metal sheet 110 are fitted into the protrusions 221 projecting to the front surface of the rear casing 22, the metal sheet 110 is less likely to shift in the left-right direction. Therefore, the through hole 115 formed in the metal sheet 110 and the screw hole 222 formed in the front surface of the rear casing 22 can be easily aligned.

A fastener 170 such as a screw is screwed into the threaded hole 222 through the through hole 115 to fix the metal sheet 110 to the front surface of the rear casing 22 . Since the metal sheet 110 forms the inner wall surface on the rear side of the ventilation passage 18, when the indoor unit 100 is in operation, the metal surface with metallic luster or the like can be seen when looking into the inside of the air outlet 17 from the inside of the room. Become. In addition, since the metal surface is smooth, it is difficult for foreign matter blown out from the indoor blower fan 8 to adhere.

In FIG. 14, three through-holes 115 and three screw holes 222 are provided at both left and right ends and at the center in the left-right direction. , can be provided in the arrangement. Also, the notch 116 and the protrusion 221 can be provided in an appropriate number, shape, and arrangement as long as they mesh with each other. For example, it may be provided on the front end side of the metal sheet 110 or the lower end side of the rear casing 22 .

The metal sheets 110 and 120, which are curved copper plates or copper alloy plates 110 or flat copper plates or flat copper alloy plates 120, are placed on the lower surface of the front casing 19, the lower surface of the drain pan 20, the upper surface of the rear casing 21, the front surface of the partition casing 23, and the like. 14 and 15, the same method as in the case of attaching to the front surface of the rear casing 22 can be used. Moreover, when arranging as a member forming a part of these or a member forming all of them, the same joining method as that for conventional members can be used.

Although the embodiments according to the present invention have been described above, the present invention is not limited to the above embodiments, and includes various modifications without departing from the technical scope. For example, the above embodiments are not necessarily limited to having all the configurations described. Also, it is possible to replace part of the configuration of an embodiment with another configuration, or add another configuration to the configuration of a certain embodiment. Moreover, it is also possible to add another configuration, delete a configuration, or replace a part of the configuration of a certain embodiment.

For example, the structure of the indoor unit 100 shown in FIGS. 1 and 3 to 7 and the structure of the refrigerant circuit 1 shown in FIG. or configuration. In FIGS. 8 to 15, a single curved copper plate, copper alloy plate, flat copper plate, or flat copper alloy plate is arranged at the location where the airflow contacts, but a plurality of them may be arranged side by side.

In addition, the curved copper plate, copper alloy plate, flat copper plate, and flat copper alloy plate are not limited to room air conditioners, and may be applied to places where air currents come into contact, such as commercial air conditioners and multi-air conditioners for buildings. The curved copper plate or copper alloy plate may have a flat flat surface on the other surface as long as one surface is curved, and is not limited to those made of a rolled material.

1 Refrigerant circuit 2 Compressor 3 Four-way valve 4 Outdoor heat exchanger 5 Expansion valve 6 Indoor heat exchanger 7 Outdoor blower fan 8 Indoor blower fan 11 Case base 12 Decorative frame 13 Front panel 15 Upper surface air inlet 15a Upper surface filter 16 Front Air inlet 16a Front filter 17 Air outlet 18 Ventilation path 19 Front casing 20 Drain pan 21 Rear casing 22 Rear casing 23 Partition casing 24 Front up-down wind direction plate (up-down wind direction plate)
25 Rear up/down wind direction plate (up/down wind direction plate)
26 Left and right wind direction plate 30 Panel member 100 Indoor unit 110 Curved copper plate or copper alloy plate (metal sheet)
120 flat copper plate or flat copper alloy plate (metal sheet)
200 outdoor unit 300 remote control AC air conditioner

Claims (9)

An air conditioner comprising an indoor unit in which a copper plate or a copper alloy plate having wavy bending is arranged in a curved manner in at least part of a ventilation passage on the downstream side of a heat exchanger or at least part of a vertical wind direction plate. The air conditioner according to claim 1,
An air conditioner in which the ventilation passage is at least one of a casing, a lower surface of a drain pan, a left and right wind direction plate, and an indoor blower fan. The air conditioner according to claim 1,
The air conditioner, wherein the copper alloy plate is a copper-zinc alloy in which zinc is added to copper, or a copper-nickel-zinc alloy in which nickel and zinc are added to copper. The air conditioner according to claim 1,
The air conditioner, wherein the copper plate or the copper alloy plate has a Vickers hardness of 185 or more. The air conditioner according to claim 1,
The air conditioner, wherein the copper plate or the copper alloy plate has a Vickers hardness of 185 or more and a tensile strength of 610 MPa or more. The air conditioner according to claim 1,
An air conditioner in which a flat copper plate or flat copper alloy plate is arranged in at least a part of the ventilation passage in addition to the curved copper plate or copper alloy plate. The air conditioner according to claim 6,
The copper plate or the copper alloy plate has a thickness of 0.1 mm or less, and the flat copper plate or the flat copper alloy plate has a thickness of more than 0.1 mm. The air conditioner according to claim 6,
The copper plate or the copper alloy plate has a Vickers hardness of 185 or more, and the flat copper plate or the flat copper alloy plate has a Vickers hardness of less than 185. The air conditioner according to claim 6,
The copper plate or the copper alloy plate is bent and curved, and the flat copper plate or the flat copper alloy plate is not bent and has a higher curvature than the copper plate or the copper alloy plate. A small air conditioner.

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