JP2002206767A - Indoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit suitable for a highly airtight heat insulation house and a cold district house wherein a constitution with a high efficiency and excellent compactness is made up at a low cost by enabling extension of a suction area and increase of a mounting amount of a heat exchanger. SOLUTION: The indoor unit of an air conditioner comprises an indoor unit body 1 having a suction port 2 for sucking indoor air from a suction port 2a of a front surface and a suction port 2b of a lower surface, an air outlet 3 for diffusing the sucked air above the port 2a and a wind circuit 4 for communicating with the outlet 3 via the port 2 therein, a blower 5 provided to feed a wind from the outlet 3, a first heat exchanger 6 provided at the front surface, and a second heat exchanger 7 provided at a lower part of the blower 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner for cooling and heating a room.

[0002]

2. Description of the Related Art As shown in FIG. 10, a separate type indoor unit 101, which is a conventional air conditioner, is provided with a suction port 104 from a front surface 102 and an upper portion 103 of a ceiling, and is sucked from the suction port 104. Air and blower 1
In general, the air circuit 105 has a blower circuit having an outlet 107 for exchanging heat with a heat exchanger 106 disposed on the front and upper sides of the airbag 05 and blowing the cooled or heated air obliquely downward from the front with a blower 105. It is. As another proposal, there is an indoor unit in which a blower is sandwiched by a V-shaped heat exchanger in a wind circuit having a lower suction upper blowing configuration (see, for example, Japanese Patent Application Laid-Open No. Hei 6-272884).

[0003]

In recent years, air conditioners have
Especially, from the viewpoint of global environmental protection, we are rapidly promoting energy saving to tackle environmental issues. In order to address this energy-saving problem, conventional indoor units are working to increase the amount of heat exchangers installed. However, this approach increases the depth of the indoor unit and the height of the indoor unit main body, increases the size of the indoor unit, and has a problem that the feature of wall hanging which lacks compactness and has good interior characteristics is disappearing. .

[0004] In addition, in the case of the proposal, the suction opening is formed on the lower surface or the rear surface, the suction area is small, and the mounting amount of the heat exchanger is V-shaped. There is a problem that it is difficult to configure an efficient indoor unit main body because the contribution ratio at which the capability is increased is poor and the indoor unit is not compact.

[0005] The housing industry has also been making efforts to significantly improve the hermetic insulation structure of the house in response to environmental issues, to develop a highly airtight and highly insulated house, and to reduce the heat loss during air conditioning as much as possible. In such a house, the heat load at the start of cooling and heating is large, but once the temperature reaches the predetermined temperature, the carcass heat can be stored on the floor, wall, ceiling of the house,
The operation of cooling and heating can be performed with a small capacity, and a comfortable environment can be created only by supplying a predetermined small capacity. When a conventional indoor unit is operated in such a house, there is a problem that many people feel uncomfortable at the time of startup because the blowing wind is strong and the user feels unpleasant at the time of startup. In order to reduce the capacity of the machine, there is a problem that a low blowing temperature is blown out in the heating operation and the user feels a cool air feeling.

[0006] Also, indoor units of air conditioners in cold regions are typically floor-standing and wall-mounted types. The floor-standing has good heating comfort but requires a place for installation on the floor. There was a problem that the space became smaller. In addition, the wall-mounted type has a problem in that since warm air is generated from a place close to the ceiling, the warm air does not reach the floor surface and a sense of cool air is felt.

SUMMARY OF THE INVENTION The present invention has been made in view of such problems of the prior art, and has an indoor unit main body configuration capable of providing a large capacity, is excellent in compactness, and is capable of discharging air without a complicated structure. The air conditioner, which does not expose the user to the wind and uses the radiation as an indoor unit of the air conditioner in cold regions and has many excellent effects to solve the problems of installation and comfort due to the warm air It is intended to provide an indoor unit.

[0008]

In order to achieve the above object, the invention according to claim 1 of the present invention has a suction port for sucking room air from a front surface and a lower surface portion, and a suction port on a front surface. An indoor unit main body having an air outlet for blowing out the sucked air and having a wind circuit communicating the air inlet and the air outlet therein, and provided to blow air from the air outlet. A blower and a first heat exchanger are provided on a front face, and a second heat exchanger is provided at a lower part of the blower.

According to a second aspect of the present invention, the wind circuit is formed such that a horizontal or upper surface is curved convexly from a position closest to the blower toward the air outlet.
And a second fan casing formed so as to surround the fan along the back surface from a position where the fan casing and the fan are closest to each other.

The invention according to claim 3 is characterized in that a suction panel is provided from a front surface to a lower surface of the suction port.

Further, the invention according to claim 4 is characterized in that a filter for suction air is provided in a wind circuit between the suction panel and the second heat exchanger.

[0012] Further, the invention according to claim 5 is the second invention.
A water receiving tray for receiving condensed water generated by heat exchange with the sucked air is provided below the heat exchanger.

According to a sixth aspect of the present invention, there is provided a suction port for sucking room air from a front surface and a lower surface portion, and an air outlet for blowing out the sucked air is provided above the suction hole on the front surface, and is provided inside. An indoor unit main body having a wind circuit communicating the suction port and the air outlet, a blower provided to send out the air from the air outlet, and a first heat exchanger provided on a front surface, The heat exchanger is divided into a second heat exchanger and a third heat exchanger or more, and one end of the heat exchanger faces downward.

The invention according to claim 7 is characterized in that the lower part of the suction port is provided over the back surface.

The invention according to claim 8 is characterized in that a suction port is provided on a side surface of the indoor unit main body.

According to a ninth aspect of the present invention, the front panel of the indoor unit main body is a radiating section, and the front panel is driven to draw wind from the outlet into the suction port. And

Further, the invention according to claim 10 has a function of a water receiving tray below the second heat exchanger for receiving dripping water from the heat exchanger and rectifying the flow of wind. A plate is provided.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings.

(Embodiment 1) FIG. 1A is a schematic view of an indoor unit of an air conditioner according to Embodiment 1 of the present invention. In FIG. 1A, in the indoor unit main body 1,
It has a suction port 2 for sucking room air from a suction port 2a on the front surface and a suction port 2b on the lower surface, an outlet 3 for blowing out the sucked air is provided above the front suction port 2a, and the suction port 2 is provided inside. Circuit 4 that communicates with the outlet 3
, An air blower 5 provided to blow out the air from the outlet 3, a first heat exchanger 6 provided on a front surface, and a second heat exchanger 7 provided for the blower 5. It is configured to be provided at the lower part.

Further, the wind circuit 4 moves toward the outlet 3
A first fan casing 8a formed by projecting the upper surface in a convex shape from the position closest to the blower 5 and a second fan casing formed so as to surround the blower 5 along the back from the position closest to the blower 5. A fan casing 8b is provided. Further, a suction panel 9 is provided from the suction port 2a on the front surface of the suction port 2 to the suction port 2b on the lower surface. Also, the suction panel 9 and the second
A filter 10 for suction air is provided in a wind circuit between the heat exchanger 7 and the heat exchanger 7. Further, below the second heat exchanger 7, there is provided a water receiving tray 11 for receiving condensed water that is exchanged with the sucked air.

(Embodiment 2) FIG. 1B is a schematic view of an indoor unit of an air conditioner according to Embodiment 2 of the present invention. In FIG. 1B, the indoor unit main body 1 has a suction port 2 for sucking room air from a suction port 2a on the front surface and a suction port 2b on the lower surface, and above the suction port 2a on the front surface.
An indoor unit main body 1 having an air outlet 3 for blowing out the sucked air and having an air circuit 4 communicating the air inlet 2 and the air outlet 3 therein, and an air outlet 3 for blowing air from the air outlet 3 The second blower 5 and the first heat exchanger 6 are provided on the front face, and the second heat exchanger 7 is divided into a second heat exchanger 7a and a third heat exchanger 7b to perform the second heat exchange. One end of the heat exchanger and the third heat exchanger is configured to face downward. Also, the wind circuit 4 moves toward the outlet 3
A first fan casing 8a formed horizontally from a position closest to the blower 5 and a second fan casing 8b formed so as to surround the blower 5 from the position closest to the blower 5 along the back surface.

FIGS. 2 (a) and 2 (b) are views for explaining the flow of wind with reference to the second embodiment, and FIG.
(B) is a cross-sectional and perspective view. Suction air from the front is sucked into the suction port 2a on the front, suction air from the bottom is sucked into the suction port 2b on the bottom, and passes through the blower 5 to blow out from the outlet 3.

FIGS. 3 (a) and 3 (b) are diagrams for explaining the flow of wind from the back with reference to the second embodiment, wherein FIG. 3 (a) is a schematic diagram, and FIG. is there. Suction air from the front is sucked into the suction port 2a on the front, suction air from the bottom is sucked into the suction port 2b on the bottom, suction air from the back is sucked into the suction port 2c on the back,
After passing through the blower 5, the blown air is emitted from the outlet 3.

FIGS. 4 (a) and 4 (b) are diagrams for explaining the flow of wind from the back and side surfaces with reference to the second embodiment. FIG. 4 (a) is a schematic diagram, and FIG. FIG.
Suction air from the front is sucked into the suction port 2a on the front, suction air from the bottom is sucked into the suction port 2b on the bottom, suction air from the back is sucked into the suction port 2c on the back, and suction air from the side. Is the suction port 2 on the side
Then, the air is sucked into the air outlet d, passes through the blower 5, and blows out from the outlet 3.

FIGS. 5 (a) and 5 (b) are diagrams for explaining the driving of the front panel with reference to the second embodiment, wherein FIG. 5 (a) is a schematic diagram and FIG. 5 (b) is a cross-sectional and perspective view. Suction air from the front is sucked into the suction port 2a on the front, suction air from the bottom is sucked into the suction port 2b on the bottom, suction air from the back is sucked into the suction port 2c on the back, and the front panel is driven. As a result, the air sucked from the front increases and is sucked into the suction port 2e on the front, is separated into the wind passing through the blower 5 and blowing out from the outlet 3 and the wind passing through the back of the front panel 12, and Is sucked into the front suction port 2e.

FIGS. 6 (a) and 6 (b) are views for explaining a current plate with reference to the second embodiment, and FIG.
(B) is a partial explanatory view. 2nd heat exchanger 7a, 3rd
Below the heat exchanger 7b, a water receiving tray 14 for receiving dripping water from the second heat exchanger 7a and the third heat exchanger 7b.
And a rectifying plate 13 for rectifying the flow of wind is formed below the second heat exchanger 7a and the third heat exchanger 7b. There is a relationship between the point A and the water tray at a position where the drop of water from the point A on the current plate is received in the lower water tray.

7 (a), 7 (b) and 7 (c) are diagrams for explaining the indoor temperature distribution when the conventional wall-mounted indoor unit and the floor-mounted indoor unit perform heating operation, and FIG. 7 (a) shows the wall-mounted indoor unit. FIG. 4B is a temperature distribution diagram of the strong wind operation, FIG. 4B is a temperature distribution diagram of the breeze operation of the wall-mounted indoor unit, and FIG.

In the temperature distribution in the strong wind operation of the wall-mounted indoor unit shown in FIG. 7 (a), there is a movement of air in the entire room, and when the house is a general house, the temperature distribution is particularly different between the floor and the ceiling. In the case where the user is lying near the floor as shown in the figure, the user often cannot feel the feeling of heating even if the room temperature is raised. In addition, there is also an unpleasant sensation that the user feels a cool wind at the place of the user and a hot wind comes from the head by operating the strong wind downward from the indoor unit.

In the temperature distribution of the breeze operation of the wall-mounted indoor unit shown in FIG. 7 (b), since the air volume is very small, the blown-out air easily rises and enters the suction, and the temperature rises only around the indoor unit. You will not be able to get a feeling of heating.

In the temperature distribution of the operation of the indoor unit placed on the floor shown in FIG. 7 (c), the heating feeling for the user is high even with partial heating because the heating outlet is located near the user. However, since the indoor unit is located close to the user due to the heating by blowing air, unnecessary high-temperature feeling after the room temperature rises and the low blown wind easily hits the user due to the reduced capacity at the time of stability and it is uncomfortable with the feeling of cold wind There are not a few opinions. There is also a fundamental problem that the living area of a narrow Japanese house is further reduced because it is installed on the floor.

FIGS. 8 (a) and 8 (b) are diagrams for explaining the indoor temperature distribution during the heating operation according to the embodiment of the present invention, and FIG. 8 (a) is a temperature distribution diagram for the strong wind operation of the indoor unit.
(B) is a temperature distribution diagram of the breeze operation of the indoor unit.

In the temperature distribution in the strong wind operation of the indoor unit shown in FIG. 8 (a), since the blowout is located above the indoor unit, even when the strong wind operation is performed, the air is not moved to the entire room by the blowout but used. People do not feel the wind relatively, and there is a feeling of heating for room temperature. Since the suction is at the lower surface of the indoor unit, the room temperature rises faster by sucking and heating a lower temperature.

In the temperature distribution of the breeze operation of the indoor unit shown in FIG. 8 (b), the blown air remains near the ceiling due to the small air volume, but the air flow is gentle because the suction is performed from below. The temperature distribution performed is likely to be relatively uniform. If this indoor unit is installed in a highly airtight and highly insulated house, the temperature distribution of the indoor temperature is good and the heating energy only needs to be supplied minutely, so that the feeling of heating is further improved.

FIGS. 9 (a), 9 (b) and 9 (c) are diagrams for explaining the indoor temperature distribution when installed in a cold area according to the embodiment of the present invention. FIG. (B) is a temperature distribution diagram of the airflow operation of the indoor unit, and (c) is a temperature distribution diagram of the heating operation using the radiation unit.

In the temperature distribution of the indoor unit in the strong wind operation shown in FIG. 9 (a), the blowing is at the upper part of the indoor unit, and the wind does not hit the user even in the strong wind operation.
Instead of moving the air to the whole room by blowing, the user does not feel the wind relatively, and there is a feeling of heating instead of room temperature. Since the suction is at the lower surface of the indoor unit, the room temperature rises faster by sucking and heating a lower temperature. In addition, since the heating outlet is near the user, the feeling of heating is high.

In the temperature distribution at the time of the breeze operation of the indoor unit shown in FIG. 9 (b), the blown air tends to rise because the air volume is very small, but the suction is near the floor, so that the temperature is low. It can be replaced and the temperature tends to be uniform. In addition, there is an indoor unit near the user, but the balloon is blown upward, and the feeling of cool wind due to the wind is small.

In the temperature distribution at the time of the heating operation using the radiating portion shown in FIG. 9C, since the temperature of the radiating portion on the front panel is increased by suppressing the blown air, the ideal airflow is not felt at all. Radiant heating is possible. As for the temperature distribution, there is a place where the temperature is low in the corner of the room, but the user does not feel a cool air feeling from the radiant heating.

With respect to the implementation according to claim 1 of the present invention,
As can be seen from FIGS. 1 (a) and 1 (b), since the indoor air is sucked from the front and lower surfaces, the suction resistance can be reduced, a large capacity can be obtained, and the operation can be performed with low noise. In addition, the heat exchanger is divided into a first heat exchanger and a second heat exchanger, and the second heat exchanger is arranged at a lower part of the blower. By doing so, the rate at which the capacity of the heat exchanger can be maximized and used for the capacity of the air conditioner indoor unit body (the capacity contribution rate of the heat exchanger) increases.

Further, with regard to the embodiment of the present invention, as shown in FIGS. 1 (a), (b) and FIGS. 2 (a), (b), the outlet and the inlet are close to each other. Therefore, the phenomenon that the blown-out cold air and hot air are sucked into the suction port, that is, a so-called short circuit tends to occur easily. However, the first fan casing that serves to separate the air from the air-out from the indoor unit body is provided. This phenomenon does not occur by providing. Also, a second fan casing is arranged so that the wind circuit can be operated with low noise and high efficiency.

As can be seen from FIGS. 1 (a) and 1 (b), a suction panel is arranged from the front surface to the lower surface of the suction port. The indoor air can be sucked from the entire front and lower surface of the suction port so as to maximize the suction area of the exchanger and not to oppose the flow of the suction air. In addition, since the lower suction is performed, the driving unit cannot be seen during operation, which is not an image of a conventional air conditioner.

As shown in FIGS. 1 (a) and 1 (b), with regard to the embodiment of the present invention, the filter for the suction air is provided in the room which is sucked from the front surface and the lower surface of the suction port. In addition to purifying the air in the space, an upward flow of air is created near the indoor wall surface to clean the dust on the wall surface to which dust tends to adhere.

As can be seen from FIGS. 1 (a) and 1 (b), the water receiving tray is located below the heat exchanger and can be viewed from the front and the bottom. It functions to receive condensed water condensed from the first heat exchanger and the second heat exchanger that exchange heat with the sucked air.

Further, regarding the embodiment of the present invention, as can be seen from FIG. 1B, the first heat exchanger is disposed on the front side and the second heat exchanger and the third heat exchanger are arranged. By placing the heat exchanger in the lower part of the blower, the second heat exchanger and the third heat exchanger can be arranged at an extremely high inclination, so that the contribution rate that the efficiency of the heat exchanger can be used with high efficiency is improved. Since the arrangement can be made high and the position from the blower to the lower end of the heat exchanger can be shortened, the wind circuit can be configured with a smaller volume than the conventional indoor unit body.

As can be seen from FIGS. 3 (a) and 3 (b), the suction area can be increased by arranging the lower portion of the suction port over the back surface. As a result, it is possible to further increase the capacity, use a highly efficient heat exchanger, and reduce noise from the first aspect.

As can be seen from FIGS. 4 (a) and 4 (b), the suction area is increased by arranging the suction port on the side surface of the indoor unit body. As a result, it is possible to further increase the capacity, use a highly efficient heat exchanger, and reduce noise from the first aspect.

As can be seen from FIGS. 5 (a) and 5 (b), when the heating operation is performed, the front panel is used as a radiating portion and the front panel is used as an embodiment of the present invention. By driving, the wind coming out of the outlet is drawn into the inlet, the radiant portion of the front panel is heated, and the heat is used as radiant heat for heating. In this method, heating by radiation can be performed. Therefore, when room temperature is stable and large capacity is not required, the radiation feeling is very good when the radiation heating is performed.

As can be seen from FIGS. 7 (a), 7 (b) and 7 (c), in the conventional wall-mounted heating, the temperature rises due to a sense of wind speed in a strong operation, but does not feel warmth. . Further, in the weak operation, the wind blown out from the indoor unit main body is immediately sucked, and the high temperature stays only around the indoor unit main body. Further, in the case of a floor-standing type indoor unit, the user feels a sense of the wind speed and feels uncomfortable even when the blowing temperature is high because the user is close to the user in strong wind operation.

As can be seen from FIGS. 8 (a) and 8 (b), when the indoor unit body is mounted at the conventional wall-mounted position, the user feels a sense of wind speed even during high heating operation. Does not feel a cool wind at a uniform temperature. Further, even if the vehicle is weakly driven, the room temperature tends to be uniform due to the convection of the wind blown upward and downward.

Also, as can be seen from FIGS. 9 (a) and 9 (b), in a cold region, the indoor unit main body is installed near the floor so that the wind does not directly hit the user even during strong wind operation. Heating operation is possible. In addition, even when the room temperature is stable, the air can be heated with less sense of airflow because the air is suctioned under the upper air outlet even when the operation is weak. Further, by performing the radiant heating when the room temperature is stable, it is possible to obtain comfort without feeling the feeling of cool wind due to the airflow at all.

As can be seen from FIGS. 6 (a) and 6 (b), the second and third heat exchangers are extremely inclined with respect to the embodiment of the present invention. If this is done, condensed water may drop from the dust and dirt attached to the heat exchanger. Therefore, a rectifying plate serving as a water receiving tow below the second heat exchanger and the third heat exchanger. Is provided. The current plate serves as a water receiver, serves to clean the air sucked into the second heat exchanger and the third heat exchanger, thereby maintaining the temperature balance of the heat exchanger, and serves to reduce suction noise. The current plate is provided with a water receiving tray portion so that water can be received in the vertical direction.

[0051]

Since the present invention is configured as described above, it has the following effects. According to the first aspect of the present invention, it is possible to secure a large indoor air intake area and increase the mounting amount of the heat exchanger, thereby achieving low noise, large capacity, and energy saving. Further, the height of the indoor unit main body can be made relatively low, and there is no problem even if the top surface of the indoor unit main body contacts the ceiling surface, and the degree of freedom in installation is increased.

According to the second aspect of the present invention, the wind circuit has an effect that a phenomenon that the blown-out cold air and hot air are not sucked into the suction port does not occur. This has the effect of suppressing the occurrence of dew condensation around the air outlet due to the disturbance of indoor air.

According to the third aspect of the present invention, the suction panel secures the suction area of the heat exchanger to the maximum and prevents the suction air from flowing against the flow of the suction air. Room air can be sucked in from the entire front surface and the lower surface. In addition, since the lower suction is performed, the driving unit cannot be seen during operation, which is not an image of a conventional air conditioner. Further, when the suction panel is cleaned, the suction filter is located at a lower position with respect to the indoor unit main body, so that even a short user can easily clean the suction panel.

According to the fourth aspect of the present invention, the suction air filter cleans the air in the indoor space sucked from the front surface and the lower surface of the suction port, and increases the flow of air rising near the indoor wall surface. This has the effect that the dust on the wall surface to which dust tends to adhere can be cleaned. In addition, when the suction panel is removed from the user, the entire air filter can be seen and cleaned without removing it.

According to the fifth aspect of the present invention, the water receiving tray is located below the heat exchanger and exchanges heat with the air sucked in from the front and lower surfaces.
Has the effect of receiving condensed water condensed from the heat exchanger.
In addition, since the water receiving tray is located at the lowest position of the indoor unit main body, it is also possible to collect all the dew water condensed on the indoor unit main body, so that the heat insulation structure of the indoor unit main body can be simplified and the cost reduced. it can.

According to the sixth aspect of the present invention, the heat exchanger is provided with the first heat exchanger on the front side and the second and third heat exchangers on the lower part of the blower. By placing it,
Since the second heat exchanger and the third heat exchanger can be arranged at an extremely high inclination, a high contribution ratio can be obtained in which the capacity of the heat exchanger can be used with high efficiency. Since the position of the indoor unit can be shortened, the indoor unit body can be made compact and the interior characteristics can be enhanced.

According to the seventh aspect of the present invention, the suction area can be increased by disposing the lower portion of the suction port over the back surface, so that the heat exchanger with higher capacity and higher efficiency than the first aspect can be obtained. This has the effect of reducing the use of noise and reducing noise.

According to the eighth aspect of the present invention, the suction area can be enlarged by arranging the suction port on the side surface of the indoor unit main body.
This has the effect of using a highly efficient heat exchanger and reducing noise.

According to the ninth aspect of the present invention, radiant heating can be performed using warm air in the air conditioner. Heating can be done. Further, since the indoor unit main body is installed near the user, there is an effect that the feeling of heating is high even in local heating.

According to the tenth aspect of the present invention,
The current plate has a water receiving effect below the second heat exchanger and the third heat exchanger, and cleans the air sucked into the second heat exchanger and the third heat exchanger to generate heat. This has the effect of maintaining the temperature balance of the exchanger. In addition, there is an effect that the suction noise is reduced by flushing the suction air.

[Brief description of the drawings]

FIG. 1A is a schematic diagram of an indoor unit of an air conditioner according to Embodiment 1 of the present invention. FIG. 1B is a schematic diagram of an indoor unit of an air conditioner according to Embodiment 2 of the present invention.

FIGS. 2A and 2B are schematic views of a flow of a wind according to an embodiment of the present invention, and FIGS.

FIG. 3A is a schematic view of the flow of wind from the back according to an embodiment of the present invention. FIG. 3B is a cross-sectional view and a perspective view of the flow of wind from the back according to the embodiment of the present invention.

FIG. 4A is a schematic view of the flow of wind from the back and side surfaces according to an embodiment of the present invention. FIG. 4B is a cross-sectional and perspective view of the flow of wind from the back surface and side surfaces according to an embodiment of the present invention.

FIG. 5A is a schematic view of a front panel driven according to an embodiment of the present invention, and FIG. 5B is a cross-sectional view and a perspective view of the front panel driven according to an embodiment of the present invention.

FIG. 6A is a schematic view of a current plate mounting indoor unit main body according to an embodiment of the present invention. FIG. 6B is a position explanatory view of a current plate and a water receiving tray portion according to an embodiment of the present invention.

FIG. 7 (a) Temperature distribution diagram of conventional wind-driven indoor unit for strong wind operation (b) Temperature distribution diagram of conventional wall-mounted indoor unit for light wind operation (c) Temperature distribution diagram of conventional floor-mounted indoor unit operation

FIG. 8 (a) Temperature distribution diagram of strong wind operation of an indoor unit according to an embodiment of the present invention (b) Temperature distribution diagram of light wind operation of an indoor unit according to an embodiment of the present invention

FIG. 9A shows a temperature distribution diagram of a strong wind operation of an indoor unit when installed in a cold area according to the embodiment of the present invention. FIG. 9B shows an indoor unit when installed in a cold area according to the embodiment of the present invention. Temperature distribution diagram of breeze operation (c) Temperature distribution diagram of heating operation using a radiation part when installed in a cold region in the embodiment of the present invention

FIG. 10 is a sectional view of a conventional indoor unit.

[Explanation of symbols]

 Reference Signs List 1 indoor unit main body 2 suction port 2a front suction port 2b bottom suction port 2c rear suction port 2d side suction port 3 blowout port 4 wind circuit 5 blower 6 first heat exchanger 7 second heat exchanger 8 Fan casing 9 Suction panel 10 Filter for suction air 11 Water tray 12 Front panel

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24F 13/32 F24F 1/00 421

Claims (10)

[Claims] 1. A suction port for sucking room air from a front surface and a lower surface portion, an air outlet for blowing out the sucked air is provided above the front air inlet, and the air inlet and the air outlet are provided inside. An indoor unit main body having a communicating wind circuit, a blower provided to send out wind from the outlet, a first heat exchanger provided on a front surface, and a second heat exchanger provided at a lower portion of the blower. An indoor unit for an air conditioner, wherein the indoor unit is provided. 2. The air circuit, wherein: a first fan casing formed by bending a horizontal or upper surface convexly from a position closest to the blower toward the air outlet; and a position closest to the blower. The indoor unit for an air conditioner according to claim 1, further comprising a second fan casing formed so as to surround the blower along the rear surface from the rear. 3. The indoor unit of an air conditioner according to claim 1, wherein a suction panel is provided from a front surface to a lower surface of the suction port. 4. The indoor unit for an air conditioner according to claim 1, wherein a filter for suction air is provided in a wind circuit between the suction panel and the second heat exchanger. 5. The air conditioner according to claim 1, wherein a water receiving tray for receiving condensed water that has undergone heat exchange with the sucked air is provided below the second heat exchanger. Indoor unit. 6. A suction port for sucking room air from a front surface and a lower surface portion, an air outlet for blowing out the sucked air is provided above the air inlet on the front surface, and the air inlet and the air outlet are provided inside. An indoor unit main body having a communicating wind circuit, a blower provided to send out the wind from the outlet, a first heat exchanger provided on a front surface, and a second heat exchanger provided with a second heat exchanger. An indoor unit for an air conditioner, wherein one end of the heat exchanger is directed downward, which is divided into a heat exchanger and a third heat exchanger or more. 7. The indoor unit of an air conditioner according to claim 1, wherein a lower portion of the suction port is provided over a back surface. 8. The indoor unit for an air conditioner according to claim 1, wherein a suction port is provided on a side surface of the indoor unit main body. 9. The front panel of the indoor unit main body as a radiating portion, wherein the front panel is driven to draw wind from the outlet into the suction port. The indoor unit of the air conditioner as described. 10. A rectifying plate having a function of a water receiving tray for receiving dripping water from the heat exchanger and rectifying a flow of wind is provided below the second heat exchanger. The indoor unit of the air conditioner according to claim 1 or 6.