JP2009085574A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner capable of selectively blowing cold air and warm air while preventing dew condensate from being blown out into a room, in an operation mode using a part of a heat exchanger as an evaporator and also using the other part of the heat exchanger as a condenser. <P>SOLUTION: In this air conditioner, a blowout passage 23 reaching a blowout port 24 from an indoor fan 11 is a single passage, and there is no partitioning member in the blowout passage 23. In an operation mode using the part of the indoor heat exchanger 30 as the evaporator and also using the other part of the indoor heat exchanger 30 as the condenser, a control device controls a refrigerant channel control section so that a second front heat exchanging part 6B is made to serve as the evaporator and a first front heat exchanging part 6A and a rear heat exchanging part 5 are made to serve as the condensers, and also controls first and second horizontal flaps 31, 32 and first and second vertical flaps 33, 34 in order to heat a local space in the room and cool the other local space therein at the same time. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air conditioner.

  Conventionally, as an air conditioner, the upper heat exchanger is used as a condenser and the lower heat exchanger is used as an evaporator, and the air sucked in by the blower fan through the upper heat exchanger and the lower heat exchanger is blown out. In some cases, the dehumidifying operation is performed by blowing out from the blowout port (for example, see JP-A-7-229635 (Patent Document 1)). In this air conditioner, by providing a partition body that divides the blowing passage up and down in the blowing passage, the cold air cooled by the lower heat exchanger is blown out upward in the room, and the warm air warmed by the upper heat exchanger is blown into the room. By blowing out downward, air conditioning of the head cold foot heat is performed without giving a cold wind to the person.

However, in the above air conditioner, the upper surface of the partition provided in the outlet passage is cooled while the lower surface of the partition is warmed, so that condensation occurs in the partition and the condensed water blows out into the room. is there.
Japanese Patent Laid-Open No. 7-229635

  Therefore, an object of the present invention is to prevent cold water and warm air from being blown out into the room in an operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser. The object is to provide an air conditioner capable of blowing wind.

In order to solve the above problems, the air conditioner of the present invention is
An inverted V-shaped heat exchanger having a front heat exchange section and a back heat exchange section;
A refrigerant flow path controller for controlling the refrigerant flow path of the heat exchanger;
A cross-flow fan that is arranged on the downstream side of the heat exchanger and blows out the air sucked through the heat exchanger from the outlet through the outlet passage;
A wind direction control unit which is provided at the outlet and controls the wind direction of the airflow from the crossflow fan;
A control device for controlling the refrigerant flow path control unit, the cross-flow fan, and the wind direction control unit;
The outlet passage from the cross-flow fan to the outlet is a single passage, and there is no partition member in the outlet passage,
In the operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the control device is provided at least on the lower side of the front heat exchange unit or the rear heat exchange unit. The air flow direction is controlled so that at least the lower side becomes an evaporator and the other part becomes a condenser, and the refrigerant flow path control unit is controlled and the indoor local space is heated and at the same time the other local space is cooled. The control unit is controlled.

  According to the air conditioner having the above configuration, a part of the inverted V-shaped heat exchanger having the front heat exchange part and the rear heat exchange part is used as an evaporator and the other part of the heat exchanger is used as a condenser. In the operation mode, the control unit controls the refrigerant flow path control unit so that at least the lower side of the front heat exchange unit becomes an evaporator and the other part becomes a condenser. At this time, even if there is no partition member in the outlet passage of the single passage from the cross flow fan to the outlet, the cold air cooled by the evaporator on at least the lower side of the front heat exchange section passes through the upper side in the outlet passage. The warm air warmed by the condenser in the other part of the heat exchanger passes through the lower side in the blowing passage and blows out from the outlet.

  Alternatively, the refrigerant flow control unit is controlled by the control device so that at least the lower side of the back heat exchange unit becomes an evaporator and the other part becomes a condenser. At this time, even if there is no partition member in the outlet passage of the single passage from the cross flow fan to the outlet, the cold air cooled by at least the lower evaporator of the rear heat exchange section passes through the lower side in the outlet passage. On the other hand, the warm air warmed by the condenser in the other part of the heat exchanger passes through the upper side of the blowout passage and blows out from the blowout port.

  In this way, by using the cool air and the warm air that are blown out without being mixed from the air outlet, the indoor local space is heated and the other local spaces are cooled at the same time without providing a partition member in the air outlet passage that is a single passage. By controlling the wind direction control unit with the control device, in an operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, it is possible to prevent the condensed water from blowing out into the room. While cold air and hot air can be blown apart.

  In an air conditioner according to an embodiment, in an operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the lower side of the front heat exchange part is the evaporation. It becomes a vessel.

  According to the above embodiment, in the operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the lower side of the front heat exchange unit is an evaporator, thereby controlling the control device. To control the wind direction control unit, for example, to heat the local space on the foot side of the room, to cool the local space on the front side of the room, or to heat the foot of the room with warm air and at the same time cool air above the hot air It is possible to effectively prevent the blow-up warm air from rising by blowing out the air.

  Moreover, in the air conditioner of one Embodiment, it becomes the said evaporator of the said heat exchanger in the operation mode which uses a part of said heat exchanger as an evaporator, and uses the other part of the said heat exchanger as a condenser. The part and the part that becomes the condenser do not overlap in the wind passage direction.

  According to the above-described embodiment, in the operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the part that becomes the evaporator and the part that becomes the condenser of the heat exchanger are By avoiding overlapping in the wind passage direction, mixing of the cool air and the warm air can be minimized and the cool air and the warm air can be blown apart.

  Moreover, in the air conditioner of one Embodiment, it becomes the said evaporator of the said heat exchanger in the operation mode which uses a part of said heat exchanger as an evaporator, and uses the other part of the said heat exchanger as a condenser. A part and the part used as the said condenser overlap in a wind passage direction.

  According to the above-described embodiment, in the operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the part that becomes the evaporator and the part that becomes the condenser of the heat exchanger are By overlapping in the wind passage direction, an intermediate layer (intermediate temperature between cold air and warm air) is created between the cool air and warm air in the outlet passage, and the cool air and warm air are separated in the intermediate layer, so mixing of cold air and warm air It is possible to effectively prevent condensation in the outlet passage.

  Moreover, in the air conditioner of one embodiment, the portion that becomes the evaporator of the heat exchanger is the portion that becomes the evaporator of the heat exchanger and the portion that becomes the condenser overlap in the wind passage direction. It arrange | positions rather than the part used as the said condenser in the upstream of a wind passage direction.

  According to the above-described embodiment, in the part where the part that becomes the evaporator of the heat exchanger and the part that becomes the condenser overlap in the wind passage direction, the part that becomes the evaporator of the heat exchanger passes the wind more than the part that becomes the condenser. Since the air sucked from the room is effectively dehumidified first by the evaporator, the dehumidified air flows between the cool air and the warm air in the blowout passage as an intermediate layer. Coupled with the separation of cold air and warm air in the intermediate layer, dew condensation in the air conditioner can be suppressed.

Moreover, in the air conditioner of one embodiment,
The wind direction control unit has a vertical flap disposed at the air outlet,
By the vertical flap of the airflow direction control unit, one of the upper component and the lower component of the air flow in the blowing passage is blown out to the right or left side of the room, and the upper component or the lower side of the air flow in the blowing passage. The other of the components is blown out to the right or left side of the room with the blowing air direction controlled more gently than one of the upper component and the lower component of the air flow in the blowing passage.

  According to the above embodiment, the cool air cooled by the evaporator of the heat exchanger passes through one of the upper side and the lower side in the outlet passage, and the warm air warmed by the condenser in the other part of the heat exchanger is blown out. When passing the other of the upper side or the lower side in the passage, one of the upper component and the lower component of the air flow in the blowout passage is changed to the right side or the left side of the room by the vertical flap of the wind direction control unit arranged in the blowout port. The other of the upper component and the lower component of the air flow in the blow-off passage is controlled more gently than the one of the upper component and the lower component of the air flow in the blow-off passage so that the right side or the left side of the room To blow out. In this way, the vertical flap of the airflow direction control unit arranged at the air outlet allows one of the right and left sides of the room to be cooled or heated and the other local space in the room to be cooled or heated. It becomes.

  For example, use vertical flaps that can change the lower half of the blown air in the left-right direction more than the upper half, or change the upper half of the blown air in the left-right direction larger than the lower half To do. As a specific configuration example in which the upper half is largely changed in the left-right direction, the upper and lower gaps formed between the wall of the blowout passage and the blades of the vertical flap are made larger than the lower gap. Alternatively, the lower width of the vertical flap blade is made longer than the upper width. In addition, as a specific configuration example for changing the horizontal direction more greatly than the lower half, the upper and lower gaps formed between the wall of the blowout passage and the blades of the vertical flap, the lower gap than the upper gap Enlarge. Alternatively, the upper width of the vertical flap blades is made longer than the lower width. With such a configuration, even if a single-stage vertical flap is used, the cool air and the warm air can be blown to the left and right to some extent.

Moreover, in the air conditioner of one embodiment,
The wind direction control unit has a vertical flap disposed at the air outlet,
By the vertical flap, the upper component and the lower component of the air flow in the blowing passage are blown in different directions on the left and right.

  According to the above-described embodiment, the upper and lower components of the air flow in the outlet passage are blown out in different directions on the left and right sides by the vertical flaps arranged at the outlet, so that either the right side or the left side of the room The other local space on the right or left side of the room can be cooled simultaneously with heating the local space.

Moreover, in the air conditioner of one embodiment,
The vertical flap has an upper and lower two-stage structure or a multistage structure.

  According to the above embodiment, when a vertical flap having a two-stage upper and lower structure is used, the cold air cooled by the evaporator of the heat exchanger passes through one of the upper side and the lower side in the outlet passage, and the other heat exchanger When the warmed air warmed by the condenser in this part passes through the other of the upper side and the lower side in the outlet passage, the upper vertical flap causes the upper component of the air flow in the outlet passage to The air is blown into the local space, and the lower component of the air flow in the blow-out passage is blown out to the other local space on the right or left side of the room by the lower vertical flap. In this way, by using the vertical flaps of the upper and lower two-stage structure of the wind direction control unit arranged at the air outlet, one of the right and left local spaces in the room is heated and the other right and left local space in the room is simultaneously cooled. be able to. Note that the vertical flap of the upper and lower two-stage structure is not limited to a structure in which the upper and lower sides are divided, and the upper and lower sides may be connected as long as the upper and lower sides have a function of facing different directions. For example, by configuring the vertical flap with a material having flexibility such as an elastic material, the upper component and the lower component of the air flow in the blowing passage can be directed in different directions without dividing the upper and lower portions. In addition, when a multi-stage vertical flap is used, finer local air conditioning is possible.

Moreover, in the air conditioner of one embodiment,
The wind direction control unit has a horizontal flap disposed at the air outlet,
By the horizontal flap of the wind direction control unit, one of the upper component and the lower component of the air flow in the blowing passage is blown to one of the upper side and the lower side of the room, and the upper component of the air flow in the blowing passage. Alternatively, the other of the lower components is blown into the local space on the upper or lower side of the room by controlling the blowing direction more gently than one of the upper component and the lower component of the air flow in the blowing passage.

  According to the above embodiment, the cool air cooled by the evaporator of the heat exchanger passes through one of the upper side and the lower side in the outlet passage, and the warm air warmed by the condenser in the other part of the heat exchanger is blown out. When passing through the other of the upper side and the lower side in the passage, one of the upper component and the lower component of the air flow in the blow-off passage is changed to the upper or lower portion of the room by the horizontal flap of the wind direction control unit arranged at the outlet. The lower component of the airflow in the outlet passage is controlled more gently than the upper or lower component of the airflow in the outlet passage so that the direction of the blowout is controlled more slowly or lower in the room. Blow out. In this way, the horizontal flap of the airflow direction control unit arranged at the outlet allows one of the upper side or the lower side of the room to be cooled or heated and at the same time the other side to be cooled or heated. It becomes.

  For example, when lower blowing, the air passing through the upper side in the blowing passage is blown above the air passing through the lower side, or when passing upward, the air passing through the lower side in the blowing passage is Use a horizontal flap that can be blown below the air passing above. In the case of lower blowing, the air passing through the upper side in the blowing passage is blown out higher than the air passing through the lower side. As a specific configuration example, when the horizontal flap is set to the lower blowing position, there is a gap between the upper side of the horizontal flap and the inside of the blowing passage (upper wall surface) (the blowing air leaks from above). Or when it is made to blow up, the air which passes the lower side in a blowing channel | path is made to blow out below the air which passes an upper side. As a specific configuration example, when the horizontal flap is set to the upper blowing position, there is a gap between the horizontal flap and the blowing passage (lower wall surface) (the blowing air leaks from below).

  With such a configuration, the lower half and the upper half of the blown air can be blown up and down to some extent without using a plurality of horizontal flaps.

  Note that the position of the horizontal flap during simultaneous cooling and heating operation may be the same as the normal cooling operation or heating operation position, but the horizontal flap and the blowout air channel (lower Set a horizontal flap position for simultaneous cooling and heating operation by increasing the gap between the wall and the horizontal flap and the gap between the horizontal flap and the blowout air channel (upper wall surface) than during normal heating operation. Also good.

Moreover, in the air conditioner of one embodiment,
The wind direction control unit has a plurality of horizontal flaps arranged at the outlet,
By the horizontal flap, the upper component and the lower component of the air flow in the blowing passage are blown out in different directions.

  According to the above embodiment, for example, the wind direction control unit has two horizontal flaps arranged at the outlet, and the upper component of the air flow in the blowout passage by one horizontal flap of the wind direction control unit, By blowing out into the local space on the front side of the room and blowing out the lower component of the air flow in the blow-out passage to the local space on the foot side of the room by the other horizontal flap, it is possible to reliably blow cold air and hot air it can. In this case, not only when there are two horizontal flaps, a plurality of horizontal flaps may be used, or a movable diffuser or the like may be used in combination. Here, the movable diffuser is an air passage that controls the air blown out from the blowout port in the vertical direction by moving at least a part of the outlet side of the upper wall surface or the outlet side of the lower wall surface constituting the blowout passage in the vertical direction. It is a configuration.

Moreover, in the air conditioner of one embodiment,
The upper component of the air flow in the blowing passage is blown out to the local space on the front side in the room, and the lower component of the air flow in the blowing passage is blown out to the local space on the foot side in the room.

  According to the above embodiment, the upper component of the air flow in the outlet passage is blown into the local space on the front side of the room to perform either cooling or heating, and the lower component of the air flow in the outlet passage is changed to the indoor component. It can blow out into the local space on the foot side and perform the other of cooling or heating.

  As is clear from the above, according to the air conditioner of the present invention, a part of the inverted V-shaped heat exchanger having the front heat exchange part and the rear heat exchange part is used as an evaporator and the heat exchanger In the operation mode in which the section is used as a condenser, the local space in the room is heated at the same time without using a partition member in the blowout passage that is a single passage using the cool air and the warm air blown out without being mixed from the blowout port. By controlling the wind direction control unit with the control device so as to cool other local spaces, it is possible to blow cold air and hot air while preventing the condensed water from blowing into the room.

  Further, according to the air conditioner of one embodiment, in an operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the lower side of the front heat exchange part is an evaporator. Thus, the control device controls the wind direction control unit to heat the local space on the foot side in the room, to cool the local space on the front side in the room, or to heat the foot in the room with warm air and at the same time By blowing cold air on the upper side of the air, it is possible to effectively prevent the hot air from rising.

  Further, according to the air conditioner of one embodiment, in the operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the part that becomes the evaporator of the heat exchanger; By preventing the condenser portion from overlapping the wind passage direction, mixing of the cool air and the warm air can be minimized and the cool air and the warm air can be blown apart.

  Further, according to the air conditioner of one embodiment, in the operation mode in which a part of the heat exchanger is used as an evaporator and the other part of the heat exchanger is used as a condenser, the part that becomes the evaporator of the heat exchanger; Since the condenser part overlaps in the wind passage direction, cold air and warm air are separated by an intermediate layer (intermediate temperature between cold air and warm air) formed between the cold air and warm air in the outlet passage. Mixing can be suppressed, and condensation in the blowout passage can be effectively prevented.

  Further, according to the air conditioner of one embodiment, the portion that becomes the evaporator of the heat exchanger and the portion that becomes the condenser overlap in the wind passage direction, and the portion that becomes the evaporator of the heat exchanger is the condenser and Since the air sucked in from the room is effectively dehumidified first by the evaporator by being arranged upstream of the portion where the wind passes, the air is dehumidified between the cold air and the warm air in the outlet passage. Condensation in the air conditioner can be suppressed in combination with the fact that air flows as an intermediate layer and cold air and warm air are separated in the intermediate layer.

  Further, according to the air conditioner of one embodiment, one of the upper component and the lower component of the air flow in the blowout passage is placed on the right side or the left side of the room by the vertical flap of the wind direction control unit arranged at the blowout port. The other of the upper component and the lower component of the airflow in the blowout and outlet passages is controlled more gently than the one of the upper and lower components of the airflow in the outlet passage so that By blowing out, it is possible to heat one of the right side and the left side of the room and simultaneously cool the other side of the room.

  In addition, according to the air conditioner of one embodiment, the vertical flaps arranged at the air outlets blow out the upper component and the lower component of the air flow in the air outlet passage in different directions on the left and right sides. It is possible to heat one local space on the right side or left side of the room and simultaneously cool the other local space on the right side or left side of the room.

  In addition, according to the air conditioner of the embodiment, at the same time as heating one local space on the right side or the left side of the room by the vertical flaps of the upper and lower two-stage structure or the multi-stage structure of the wind direction control unit arranged at the outlet. The other local space on the right or left side of the room can be cooled.

  Moreover, according to the air conditioner of one embodiment, one of the upper side component or the lower side component of the air flow in the outlet passage is changed to the upper side or the lower side of the room by the horizontal flap of the wind direction control unit arranged at the outlet. The lower component of the air flow in the outlet passage is blown out to the upper side or the lower side of the room with the blowing direction controlled more gently than one of the upper component or the lower component of the air flow in the outlet passage. Thus, by the horizontal flap of the airflow direction control unit arranged at the air outlet, one of the upper side and the lower side of the room can be cooled or heated, and at the same time the other side can be cooled or heated.

  Moreover, according to the air conditioner of one embodiment, the wind direction control unit has, for example, two horizontal flaps arranged at the outlet, and one of the horizontal flaps of the wind direction control unit controls the air flow in the blowout passage. The upper component is blown out into the local space on the front side of the room, and the lower component of the air flow in the blow-out passage is blown out to the local space on the foot side of the room by the other horizontal flap, thereby ensuring cold air and hot air. Can be blown out.

  Further, according to the air conditioner of one embodiment, the upper component of the airflow in the blowout passage is blown out to the local space on the front side of the room to perform either cooling or heating, and the airflow in the blowout passage is reduced. The side component can be blown out into the local space on the foot side in the room to perform the other of cooling or heating.

  Hereinafter, the air conditioner of this invention is demonstrated in detail by embodiment of illustration.

  FIG. 1 shows a refrigerant circuit of an air conditioner according to an embodiment of the present invention. This air conditioner is connected to a compressor 1 and a discharge side of the compressor 1 as shown in FIG. A four-way switching valve 2, an outdoor heat exchanger 3 having one end connected to one end of the four-way switching valve 2, an electric expansion valve 4 having one end connected to the other end of the outdoor heat exchanger 3, A second front heat exchange unit 6B having one end connected to the other end of the electric expansion valve 4, and an electromagnetic valve 7 having one end connected to the other end of the second front heat exchange unit 6B and being in a throttled state by a closing operation. The first front heat exchange section 6A having one end connected to the other end of the electromagnetic valve 7, the other end connected to the other end of the first front heat exchange section 6A, and the other end to the four-way switching valve 2. The back heat exchange part 5 connected is provided. The air conditioner includes an indoor fan 11 disposed in the vicinity of the rear heat exchanger 5, the first front heat exchanger 6A, and the second front heat exchanger 6B, and an outdoor disposed in the vicinity of the outdoor heat exchanger 3. The fan 12 and the control apparatus 10 which controls the compressor 1, the four-way switching valve 2, the electric expansion valve 4, the electromagnetic valve 7, the indoor fan 11, the outdoor fan 12, etc. are provided. The four-way switching valve 2, the electric expansion valve 4, and the electromagnetic valve 7 constitute a refrigerant flow path control unit.

  The compressor 1, the four-way switching valve 2, the outdoor heat exchanger 3, the electric expansion valve 4, the outdoor fan 12, and the control device 10 constitute an outdoor unit, and the back heat exchange unit 5 and the first front heat exchange unit 6A The second front heat exchange unit 6B, the electromagnetic valve 7 and the indoor fan 11 constitute an indoor unit.

  In the air conditioner having the above-described configuration, during the cooling operation, the electric expansion valve 4 is in the throttle state, the electromagnetic valve 7 is fully opened, and the four-way switching valve 2 is switched to the dotted line position to operate the compressor 1. Then, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is condensed by the outdoor heat exchanger 3 and depressurized by the electric expansion valve 4, and then evaporated by the indoor heat exchanger (5, 6A, 6B). Return to the suction side of the compressor 1 via the four-way selector valve 2.

  On the other hand, during the heating operation, the electric expansion valve 4 is in the throttle state, the electromagnetic valve 7 is fully opened, the four-way switching valve 2 is switched to the position of the solid line, and the compressor 1 is operated. Then, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is condensed by the indoor heat exchanger (5, 6A, 6B), depressurized by the electric expansion valve 4, and then evaporated by the outdoor heat exchanger 3. Return to the suction side of the compressor 1 via the four-way selector valve 2.

  In the cooling and heating simultaneous operation as an example of the operation mode in which a part of the indoor heat exchanger 30 is used as an evaporator and the other part of the indoor heat exchanger 30 is used as a condenser, the electric expansion valve 4 is fully opened. The compressor 1 is operated by switching the electromagnetic valve 7 to the throttle state and switching the four-way switching valve 2 to the solid line position. Then, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is condensed by the back heat exchange unit 5 and the first front heat exchange unit 6A and decompressed by the electromagnetic valve 7, and then the second front heat exchange unit 6B. Then, it evaporates in the outdoor heat exchanger 3 and returns to the suction side of the compressor 1 through the four-way switching valve 2. Thereby, the 2nd front heat exchange part 6B cools suction air as an evaporator, and warms suction air by using back heat exchange part 5 and the 1st front heat exchange part 6A as a condenser.

  The simultaneous cooling / heating operation may be performed in the refrigeration cycle during the cooling operation. In this case, the electric expansion valve 4 is fully opened, the electromagnetic valve 7 is throttled, the four-way switching valve 2 is switched to the dotted line position, and the compressor 1 is operated. Thus, the high-temperature and high-pressure refrigerant compressed by the compressor 1 is condensed by the outdoor heat exchanger 3 and the second front heat exchange unit 6B and decompressed by the electromagnetic valve 7, and then the first front heat exchange unit 6A. And it evaporates in the back surface heat exchange part 5 and returns to the suction side of the compressor 1 through the four-way switching valve 2. Thereby, the 2nd front heat exchange part 6B warms suction air as a condenser, and cools suction air by using back heat exchange part 5 and the 1st front heat exchange part 6A as an evaporator.

  FIG. 2 shows a cross-sectional view of the indoor unit for simultaneous cooling and heating of the air conditioner. As shown in FIG. 2, the indoor unit has a bottom frame 21 whose back side is attached to a wall surface and a bottom frame 21. A casing 20 having a front panel 22 attached thereto is provided. The indoor unit is disposed in the casing 20 and has an inverted V-shaped indoor heat exchanger 30 having first and second front heat exchange units 6A and 6B and a rear heat exchange unit 5, and its indoor heat exchange. And an indoor fan 11 disposed on the downstream side of the container 30. A cross-flow fan is used as the indoor fan 11.

  Further, an air outlet 24 is provided below the casing 20, and an air outlet passage 23 that is a single passage is provided between the indoor fan 11 and the air outlet 24. There is no partition member in the blowing passage 23. The air sucked by the indoor fan 11 through the indoor heat exchanger 30 is blown out from the blowout port 24 through the blowout passage 23.

  In addition, the first and second horizontal flaps 31 and 32 are disposed at the outlet 24 of the casing 20, and the first and second two-stage upper and lower structures are disposed upstream of the first and second horizontal flaps 31 and 32. Two vertical flaps 33 and 34 are arranged. The first and second vertical flaps 33 and 34 are attached to the blowout passage 23 via a support portion 36. The first and second horizontal flaps 31 and 32 and the first and second vertical flaps 33 and 34 having an upper and lower two-stage structure constitute a wind direction control unit. The first and second horizontal flaps 31 and 32 and the first and second vertical flaps 33 and 34 are rotated by driving units (not shown).

  Here, the first horizontal flap 31 is rotated so that the blowing air direction is directed to the local space ahead of the room, while the second horizontal flap 32 is rotated so that the blowing air direction is directed to the local space at the foot of the room. To do.

  In this case, the local space on the front side of the room can be cooled by the first and second horizontal flaps 31 and 32 and at the same time the local space on the foot side of the room can be heated. Further, the first and second vertical flaps 33 and 34 may be directed in the direction in which the air conditioning is desired. For example, when air conditioning is particularly desired on the front surface of the main body, the first and second vertical flaps are directed so that the blowing air direction is directed in the front direction. What is necessary is just to face 33,34 to a front direction.

  FIG. 3 shows a simulation result of the air flow of the indoor unit. In FIG. 3, an arrow indicates a wind direction. In FIG. 3, reference numbers of the main parts are attached to the schematic diagram on the right side in order to make the drawing easier to see.

  As shown in FIG. 3, the air sucked by the indoor fan 11 from the front side through the indoor heat exchanger 30 crosses the indoor fan 11 and forwards and obliquely downward from the outlet 24 through the outlet passage 23. And blow out (see FIG. 2). Here, the cold air cooled by the second front heat exchange unit 6B flows through the upper side of the blowout passage 23 and blows out as it is, and the warm air warmed by the first front heat exchange unit 6A and the rear heat exchange unit 5 is It flows through the lower side in the blowing passage 23 and blows out as it is. That is, the cold air and the warm air are blown out from the outlet 24 with almost no mixing.

  Thus, cold air and hot air can be blown separately without providing a partition member in the blow-out passage 23 which is a single passage.

  FIG. 4 is a cross-sectional view of the indoor unit during the step heating operation. In the indoor unit shown in FIG. 4, except for the first and second horizontal flaps 31 and 32, the other operations are almost the same as the simultaneous cooling and heating operation shown in FIGS.

  As shown in FIG. 4, the first and second horizontal flaps 31 and 32 rotate so that the blowing air direction is directed downward of the feet, and the first and second vertical flaps 33 and 34 are blowing air direction in the front direction. It does not rotate in either the left or right direction.

  As a result, the warm air blown to the feet by the first and second horizontal flaps 31 and 32 heats the indoor feet, and at the same time cool air is blown on the upper side of the hot air, thereby effectively preventing the warm air from rising. To do.

  FIG. 5A shows a cross-sectional view of the indoor unit when the left local space in the room is cooled and the right local space is heated. In the indoor unit shown in FIG. 5A, except for the first and second horizontal flaps 31 and 32 and the first and second vertical flaps 33 and 34, the other operations are the simultaneous cooling and heating operation shown in FIGS. Is almost the same.

  As shown in FIG. 5A, the first horizontal flap 31 rotates so that the blowing wind direction is directed toward the local space ahead of the room, while the second horizontal flap 32 is directed toward the local space ahead of the room. It is rotated as follows. Further, the upper first vertical flap 33 is rotated so that the blowing air direction is directed to the left side from the front toward the indoor unit, while the lower second vertical flap 34 is disposed on the right side from the front toward the indoor unit. It turns so that the blowing wind direction faces.

  As a result, as shown in FIG. 5B, it is possible to realize a cooling and heating simultaneous operation in which the left local space is cooled from the front toward the indoor unit and the right local space is heated from the front toward the indoor unit.

  FIG. 6A shows a cross-sectional view of the indoor unit when the front local space in the room is cooled and the right local space is heated. In the indoor unit shown in FIG. 6A, the other operations except for the first and second vertical flaps 33 and 34 are substantially the same as the simultaneous cooling and heating operation shown in FIGS.

  As shown in FIG. 6A, the first horizontal flap 31 rotates so that the blowing air direction is directed to the local space ahead of the room, while the second horizontal flap 32 is directed to the local space at the foot of the room. It is rotated as follows. Further, the upper first vertical flap 33 rotates so that the blowing air direction is directed to the left side toward the front, while the lower second vertical flap 34 is directed so that the blowing air direction is directed to the right side from the front. Rotate.

  As a result, as shown in FIG. 6B, it is possible to cool the local space in front of the room front and simultaneously perform the cooling and heating simultaneous operation of head cold foot heat that heats the local space on the right side toward the front of the room and close to the foot side.

  In addition, when the local space in front of the room is cooled and the local space close to the foot side is heated toward the front of the room, the upper first vertical flap 33 is not necessary. Also good.

  According to the air conditioner having the above configuration, in the operation mode in which a part of the indoor heat exchanger 30 is used as an evaporator and the other part of the indoor heat exchanger 30 is used as a condenser, the air conditioner blows out from the outlet 24 without being mixed. Using the cool air and the warm air, the air flow direction control unit is controlled by the controller 10 so as to heat the indoor local space and simultaneously cool the other local space without providing a partition member in the outlet passage 23 that is a single passage. By controlling (31-34), it is possible to separate cold air and hot air while preventing the condensed water from blowing out into the room.

  In the operation mode (simultaneous cooling and heating operation, foot heating operation) in which a part of the indoor heat exchanger 30 is used as an evaporator and the other part of the indoor heat exchanger 30 is used as a condenser, the second front heat exchange unit 6B. Becomes an evaporator, the control device 10 controls the wind direction control units (31 to 34) to heat the local space on the foot side of the room, to cool the local space on the front side of the room, By heating the feet with hot air and simultaneously blowing off the cold air on the upper side of the hot air, it is possible to effectively prevent the hot air from rising.

  Further, in the operation mode (simultaneous cooling heating operation and foot heating operation) in which a part of the indoor heat exchanger 30 is used as an evaporator and the other part of the indoor heat exchanger 30 is used as a condenser, the evaporation of the indoor heat exchanger 30 is performed. The cooler and warm air can be blown apart by minimizing the mixing of cool air and warm air so that the portion that becomes the condenser and the portion that becomes the condenser do not overlap with each other in the wind passage direction.

  Further, the upper first vertical flap 33 blows the upper component of the air flow in the blowing passage 23 into one of the right and left local spaces in the room, and the lower second vertical flap 34 blows the air in the blowing passage 23. By blowing the lower component of the flow into the other local space on the right or left side of the room, one local space on the right or left side of the room is heated, and at the same time, the other local space on the right or left side of the room is cooled. Can do.

  Also, the first horizontal flap 31 of the airflow direction control unit disposed at the outlet 24 blows the upper component of the air flow in the blowout passage 23 into the local space on the front side of the room, and the second horizontal flap 32 blows out the blowout passage. By blowing out the lower component of the air flow in the room 23 to the local space on the foot side in the room, one of the local space on the front side of the room or the local space on the foot side is heated and at the same time the other local space is cooled. Can do.

  In the above embodiment, the second front heat exchange unit 6B is an evaporator, and the rear heat exchange unit 5 and the first front heat exchange unit 6A are condensers. However, a part of the indoor heat exchanger is used as an evaporator. In addition, in the operation mode in which the other part of the indoor heat exchanger is used as a condenser, at least the lower side of the front heat exchange part or at least the lower side of the rear heat exchange part is an evaporator, and the other part is a condenser. Anything is acceptable.

  For example, the first front heat exchange unit 6A and the second front heat exchange unit 6B may be an evaporator, and the rear heat exchange unit 5 may be a condenser. The simulation result of the air flow of the indoor unit in this case is shown in FIG. In FIG. 7, reference numbers of main parts are attached to the schematic diagram on the right side to make the drawing easier to see.

  As shown in FIG. 7, the cold air cooled by the first front heat exchange unit 6A and the second front heat exchange unit 6B flows through the upper side in the blowout passage 23 and blows out as it is, and is also warmed by the rear heat exchange unit 5. The warm air flows through the lower side of the blowout passage 23, and the cool air and the warm air are blown out from the blowout port 24 with almost no mixing.

  Here, the second front heat exchange unit 6B may be a condenser, and the back heat exchange unit 5 and the first front heat exchange unit 6A may be an evaporator to exchange cold air and warm air.

  Alternatively, the first front heat exchanging part 6A is an intermediate part in which the evaporator part and the condenser part are overlapped in the wind passage direction, the second front heat exchanging part 6B is an evaporator, and the rear heat exchanging part 5 is condensed. It is good also as a vessel. The simulation result of the air flow of the indoor unit in this case is shown in FIG. In FIG. 8, reference numbers of the main parts are attached to the schematic diagram on the right side in order to make the drawing easier to see.

  As shown in FIG. 8, the cold air cooled by the second front heat exchange unit 6 </ b> B flows on the upper side in the blowout passage 23, and the warm air warmed by the rear heat exchange unit 5 is on the lower side in the blowout passage 23. In addition, the air warmed after cooling by the first front heat exchanger 6A flows between the cool air and the warm air, and the intermediate air flow ensures that the cool air and the warm air are reliably separated and hardly mixed. It is possible to prevent dew condensation by suppressing the occurrence of condensation and condensation from the air outlet 24 (see FIG. 2).

  Here, the second front heat exchange unit 6B may be a condenser, and the back heat exchange unit 5 may be an evaporator to exchange cold air and warm air.

  As described above, in the operation mode (cooling heating simultaneous operation, foot heating operation) in which a part of the indoor heat exchanger 30 is used as an evaporator and the other part of the indoor heat exchanger 30 is used as a condenser, the indoor heat exchanger 30 is used. In the first front heat exchange section 6A, the evaporator portion and the condenser portion overlap in the wind passage direction, so that an intermediate layer (intermediate temperature between the cold air and the warm air) is formed between the cool air and the warm air in the blowout passage 23. ) And the cool air and the warm air are separated in the intermediate layer, so that the mixture of the cool air and the warm air can be effectively suppressed. In addition, the area | region where the part used as an evaporator and the part used as a condenser of an indoor heat exchanger overlaps with a wind passage direction is not restricted to upper parts of heat exchangers, such as a 1st front surface heat exchange part.

  Further, in the first front heat exchange section 6A in which the portion that becomes the evaporator and the portion that becomes the condenser of the indoor heat exchanger 30 overlap in the wind passage direction, the portion that becomes the evaporator of the indoor heat exchanger 30 becomes the condenser. Since the air sucked from the room is effectively dehumidified first by the evaporator by being arranged upstream of the portion in the wind passage direction, the air is dehumidified between the cold air and the warm air in the blowout passage 23. Condensation in the air conditioner can be suppressed in combination with the fact that air flows as an intermediate layer and cold air and warm air are separated in the intermediate layer.

  In the above embodiment, the operation mode in which a part of the indoor heat exchanger 30 is used as an evaporator and the other part of the indoor heat exchanger 30 is used as a condenser is not limited to the simultaneous cooling / heating operation or the foot heating operation. The reheat dehumidification operation by the same refrigeration cycle as in the cooling operation or the reheat dehumidification operation by the reverse cycle may be used.

  In the conventional reheat dehumidification operation, the purpose is dehumidification to the last, and the air conditioner of the present invention is controlled to blow upward so as not to hit the person with raw warm or cold air. While preventing condensed water from blowing out into the room, it is possible to blow cold air and hot air into different local spaces in the room.

FIG. 1 is a diagram showing a refrigerant circuit of an air conditioner according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the indoor unit during the simultaneous cooling and heating operation of the air conditioner. FIG. 3 is a diagram showing a simulation result of the air flow of the indoor unit. FIG. 4 is a cross-sectional view of the indoor unit during foot heating operation. FIG. 5A is a cross-sectional view of the indoor unit when the left local space in the room is cooled and the right local space is heated. FIG. 5B is a schematic front view of the indoor unit when the left local space in the room is cooled and the right local space is heated. FIG. 6A is a cross-sectional view of the indoor unit when the front local space in the room is cooled and the right local space is heated. FIG. 6B is a schematic front view of the indoor unit when the local space ahead of the room is cooled and the right local space is heated. FIG. 7 is a diagram showing a simulation result of the air flow in the indoor unit when the first and second front heat exchange units are evaporators and the rear heat exchange unit is a condenser. FIG. 8 shows the air in the indoor unit when the second front heat exchange part is an evaporator, the first front heat exchange part is an evaporator / condenser superposed in the wind passage direction, and the rear heat exchange part is a condenser. It is a figure which shows the simulation result of a flow.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Compressor 2 ... Four-way switching valve 3 ... Outdoor heat exchanger 4 ... Electric expansion valve 5 ... Back surface heat exchange part 6A ... 1st front surface heat exchange part 6B ... 2nd front surface heat exchange part 7 ... Solenoid valve 10 ... Control Apparatus 11 ... Indoor fan 12 ... Outdoor fan 20 ... Casing 21 ... Bottom frame 22 ... Front panel 23 ... Outlet passage 24 ... Outlet 30 ... Indoor heat exchanger 31 ... First horizontal flap 32 ... Second horizontal flap 33 ... First Vertical flap 34 ... 2nd vertical flap 36 ... Supporting part

Claims (11)

An inverted V-shaped heat exchanger (30) having a front heat exchange section (6A, 6B) and a rear heat exchange section (5);
A refrigerant flow path control unit (2, 4, 7) for controlling the refrigerant flow path of the heat exchanger (30);
A cross flow fan (11) disposed downstream of the heat exchanger (30) and for blowing air sucked in through the heat exchanger (30) from the outlet (24) through the outlet passage (23);
Wind direction control units (31 to 34) provided at the air outlet (24) and controlling the air direction of the air flow from the cross flow fan (11);
A control device (10) for controlling the refrigerant flow path control unit (2, 4, 7), the cross-flow fan (11), and the wind direction control units (31 to 34);
The outlet passage (23) from the cross-flow fan (11) to the outlet (24) is a single passage, and there is no partition member in the outlet passage (23).
In the operation mode in which a part of the heat exchanger (30) is used as an evaporator and the other part of the heat exchanger (30) is used as a condenser, the control device (10) includes the front heat exchanger (6A). , 6B) or the refrigerant flow path controller (2, 4, 7) so that at least the lower side of the back heat exchanger (5) is an evaporator and the other part is a condenser. The air conditioner characterized by controlling said wind direction control part (31-34) so that other local space may be cooled simultaneously with heating while heating local local space. In the air conditioner according to claim 1,
In an operation mode in which a part of the heat exchanger (30) is used as an evaporator and the other part of the heat exchanger (30) is used as a condenser, the lower side of the front heat exchange part (6A, 6B) is the evaporation. Air conditioner characterized by becoming a vessel. In the air conditioner according to claim 1 or 2,
In an operation mode in which a part of the heat exchanger (30) is used as an evaporator and the other part of the heat exchanger (30) is used as a condenser, a portion of the heat exchanger (30) that serves as the evaporator; An air conditioner characterized in that a portion to be the condenser does not overlap with a wind passage direction. In the air conditioner according to claim 1 or 2,
In an operation mode in which a part of the heat exchanger (30) is used as an evaporator and the other part of the heat exchanger (30) is used as a condenser, a portion of the heat exchanger (30) that serves as the evaporator; An air conditioner characterized in that a portion to be the condenser overlaps in a wind passage direction. The air conditioner according to claim 4,
The portion of the heat exchanger (30) that becomes the evaporator and the portion that becomes the condenser overlap in the wind passage direction, and the portion of the heat exchanger (30) that becomes the evaporator becomes the condenser. An air conditioner that is disposed upstream of the portion in the wind passage direction. The air conditioner according to any one of claims 1 to 5,
The wind direction control unit has vertical flaps (33, 34) disposed at the outlet (24),
By means of the vertical flaps (33, 34) of the wind direction control section, one of the upper component and the lower component of the air flow in the blowing passage (23) is blown out to the right or left side of the room, and the blowing passage (23 ) Is controlled more gently than one of the upper component and the lower component of the air flow in the outlet passage (23), so that the direction of the blown air is controlled more slowly than the right side of the room. An air conditioner that blows to the left. The air conditioner according to any one of claims 1 to 5,
The wind direction control unit has vertical flaps (33, 34) disposed at the outlet (24),
An air conditioner characterized in that the upper and lower components of the air flow in the blowing passage (23) are blown out in the left and right directions by the vertical flaps (33, 34). The air conditioner according to claim 7,
The air conditioner characterized in that the vertical flaps (33, 34) have an upper and lower two-stage structure or a multi-stage structure. The air conditioner according to any one of claims 1 to 8,
The wind direction control unit has horizontal flaps (31, 32) arranged at the air outlet (24),
By means of the horizontal flaps (31, 32) of the wind direction control unit, one of the upper component and the lower component of the air flow in the outlet passage (23) is blown out to the upper or lower side of the room, and the outlet The other of the upper component and the lower component of the air flow in the passage (23) is controlled more gently than the one of the upper component and the lower component of the air flow in the blow-off passage (23), so An air conditioner that blows out into a local space on the upper side or the lower side. The air conditioner according to any one of claims 1 to 8,
The wind direction control unit has a plurality of horizontal flaps (31, 32) arranged at the air outlet (24),
An air conditioner characterized in that the upper and lower components of the air flow in the blowing passage (23) are blown out in different directions in the vertical direction by the horizontal flaps (31, 32). The air conditioner according to claim 9 or 10,
The upper component of the air flow in the blowing passage (23) is blown out to the local space on the front side in the room, and the lower component of the air flow in the blowing passage (23) is blown to the local space on the foot side in the room. An air conditioner characterized by being blown out.