JP5082639B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner that performs cooling and heating.

  Conventionally, when supplying conditioned air toward a target space for air conditioning, the supplied cold conditioned air tends to accumulate below the target space during the cooling operation, and the supplied warm conditioned air during the heating operation. It tends to accumulate above the target space.

On the other hand, in the apparatus shown in Patent Document 1 below, an upper air conditioner that is disposed above a room and has a heat exchanger and supplies conditioned air to the upper side of the room, and a heat that is disposed below the room and is heated. There has been proposed a technique for cooling and heating a room with a lower air conditioner that has an exchanger and supplies conditioned air to the lower part of the room. According to this device, when supplying cold conditioned air that tends to accumulate downward, increase the capacity of the upper air conditioner, and when supplying warm conditioned air that tends to accumulate upward, increase the capacity of the lower air conditioner, Temperature unevenness in the room is reduced.
JP-A-8-35704

  However, the apparatus described in Patent Document 1 requires two air conditioners, an upper air conditioner and a lower air conditioner, and the apparatus becomes large-scale.

  This invention is made | formed in view of the point mentioned above, The subject of this invention is providing the air conditioning apparatus which can reduce the temperature nonuniformity of object space by simple structure.

An air conditioner according to a first aspect of the present invention is an air conditioner capable of cooling and heating a target space, and includes a heat exchanger, a switching device, an upper temperature sensor, a lower temperature sensor, a capacity changing unit, And an adjustment unit . The switching device has a first air outlet and a second air outlet. The switching device targets the first state in which the air that has passed through the heat exchanger via the first blower port is sent above the target space, and the air that has passed through the heat exchanger via the second blower port. The second state to be sent below the space is switched. The upper temperature sensor detects the temperature above the target space. The lower temperature sensor detects the temperature below the target space. The capacity changing unit can change the cooling capacity or the heating capacity. The adjusting unit adjusts the capability of the capability changing unit based on the detection value of the lower temperature sensor during the heating operation, and adjusts the capability of the capability changing unit based on the detection value of the upper temperature sensor during the cooling operation.

  Here, by sending relatively cool air that tends to gather downward in the first state to the space above the target space, it is possible not only to reduce temperature unevenness when cooling the target space, but also to gather upward in the second state. By sending easy and relatively warm air to the space below the target space, it becomes possible to reduce temperature unevenness when the target space is warmed. And since both the air sent above the object space in the first state and the air sent below the object space in the second state are air that has passed through the same heat exchanger, one heat exchanger Can be used in common in the first state and the second state, and the configuration can be simplified.

  This makes it possible to reduce temperature unevenness with a simple configuration, whether the target space is cooled or warmed.

  In addition, here, when performing cooling operation to cool the target space, cold air tends to collect downward, so even if the lower temperature sensor located below detects the value cooled to the target temperature, The upper temperature sensor located above may not detect a value cooled to the target temperature. In addition, warm air tends to accumulate upward when heating the target space by performing heating operation, so even if the upper temperature sensor located above detects a value warmed to the target temperature, The lower temperature sensor that is positioned may not detect a value that has been warmed to the target temperature.

  On the other hand, the adjustment unit uses the capacity of the capacity changing unit that can change the cooling capacity or the heating capacity, based on the detection value of the lower temperature sensor during the heating operation, and the detection value of the upper temperature sensor during the cooling operation. Adjust each ability as a reference.

  This prevents only the upper part of the target space from being heated or cooled, prevents only the lower part of the target space from being heated or cooled, and makes the entire target space a target state. Capability adjustment can be performed.

  An air conditioner according to a second aspect of the present invention is an air conditioner capable of cooling and heating a target space, and includes a heat exchanger, a switching device, an upper temperature sensor, a lower temperature sensor, a capacity changing unit, And an adjustment unit. The switching device has a first air outlet and a second air outlet. The switching device targets the first state in which the air that has passed through the heat exchanger via the first blower port is sent above the target space, and the air that has passed through the heat exchanger via the second blower port. The second state to be sent below the space is switched. The upper temperature sensor detects the temperature above the target space. The lower temperature sensor detects the temperature below the target space. The capacity changing unit can change the cooling capacity or the heating capacity. The adjusting unit adjusts the ability of the ability changing unit such that the difference between the detected values of the upper temperature sensor and the lower temperature sensor is a predetermined value or less.

  Here, by sending relatively cool air that tends to gather downward in the first state to the space above the target space, it is possible not only to reduce temperature unevenness when cooling the target space, but also to gather upward in the second state. By sending easy and relatively warm air to the space below the target space, it becomes possible to reduce temperature unevenness when the target space is warmed. And since both the air sent above the object space in the first state and the air sent below the object space in the second state are air that has passed through the same heat exchanger, one heat exchanger Can be used in common in the first state and the second state, and the configuration can be simplified.

  This makes it possible to reduce temperature unevenness with a simple configuration, whether the target space is cooled or warmed.

  In addition, here, when performing cooling operation to cool the target space, cold air tends to collect downward, so even if the lower temperature sensor located below detects the value cooled to the target temperature, The upper temperature sensor located above may not detect a value cooled to the target temperature. In addition, warm air tends to accumulate upward when heating the target space by performing heating operation, so even if the upper temperature sensor located above detects a value warmed to the target temperature, The lower temperature sensor that is positioned may not detect a value that has been warmed to the target temperature.

  On the other hand, the adjusting unit adjusts the capacity of the capacity changing unit capable of changing the cooling capacity or the heating capacity so that the difference between the detected values of the upper temperature sensor and the lower temperature sensor is not more than a predetermined value. To do.

  This makes it possible to adjust the capacity so as to suppress the temperature difference between the upper side and the lower side in the target space.

An air conditioner according to a third aspect of the present invention is the air conditioner of the first aspect or the second aspect , further comprising a guide duct connected to the second air outlet and extending downward.

  Here, the guide duct can guide conditioned air directly to the space below.

  This makes it possible to more effectively reduce the temperature unevenness in the target space.

An air conditioner according to a fourth aspect of the present invention is the air conditioner according to the third aspect of the present invention, wherein the guide duct has an upper end opening and a lower end opening connected to the second blower opening, and the upper end opening and the lower end opening. There is no opening between.

  Here, the air that passes through the guide duct and is guided to the lower part of the target space does not leak out of the guide duct.

  Thereby, it becomes possible to reduce the heat loss in the middle of guiding conditioned air downward.

An air conditioner according to a fifth aspect of the present invention is the air conditioner according to the fourth aspect of the present invention, further comprising a heat insulating material that covers at least any part between the upper end and the lower end of the guide duct from the outside. The heat insulating material that covers the guide duct from the outside may cover not only a part of the guide duct but also the whole.

  Here, since the heat insulating material is provided outside the guide duct, heat exchange with the outside of the temperature-controlled air passing through the guide duct is reduced.

  This suppresses heat exchange with the air around the guide duct in the middle of the temperature-controlled air being led downward, making the heat loss of the temperature-controlled air supplied downward more effective Can be suppressed.

The air conditioner according to a sixth aspect of the present invention is the air conditioner according to the first to fifth aspects of the present invention, further comprising an upper duct and a lower duct. The upper duct extends so as to guide the conditioned air that has passed through the first air outlet to a predetermined upper position above the target space, and has a fine opening on the way to the predetermined upper position. The lower duct extends so as to guide the conditioned air that has passed through the second air outlet to a predetermined lower position below the target space, and has a fine opening on the way to the predetermined lower position.

  Here, not only the conditioned air is guided to a predetermined upper position of the target space by the upper duct, but also the conditioned air is sent out to the target space through the fine opening in the middle thereof. Further, not only the conditioned air is guided to a predetermined lower position of the target space by the lower duct, but also the conditioned air is sent out to the target space through the fine opening in the middle thereof.

  Thereby, it becomes possible to supply conditioned air more uniformly with respect to the upper and lower sides of the target space.

An air conditioner according to a seventh aspect is the air conditioner according to the sixth aspect, wherein the lower duct is arranged in the vicinity of the temperature controlled object existing in the target space.

  Here, since the lower duct is disposed in the vicinity of the temperature control object, the temperature control object can receive the temperature control effect more directly.

  Thereby, it becomes possible to temperature-control the temperature-controlled object more effectively.

An air conditioner according to an eighth aspect of the present invention is the air conditioner according to any of the first to seventh aspects, further comprising a receiving unit that receives inputs for performing a cooling operation and a heating operation. The switching device switches between the first state and the second state based on the received input.

  Here, the switching device automatically switches between the first state and the second state based on the input for performing the cooling operation or the heating operation received by the reception unit.

  Thereby, it becomes possible to switch to a blowing state in which temperature unevenness is automatically reduced in accordance with an input of cooling operation or heating operation.

An air conditioner according to a ninth aspect of the present invention is the air conditioner according to any one of the first to eighth aspects, further comprising a supply mechanism for supplying air to the heat exchanger above the target space. . The heat exchanger is disposed above the target space, and the upper temperature sensor is disposed on the suction side of the heat exchanger.

  Here, it is possible to use the upper temperature sensor as a sensor for detecting the temperature of air sucked into the heat exchanger while using the upper temperature sensor as a sensor for detecting the upper temperature in the target space.

  Thereby, it becomes possible to reduce the number of sensors by serving as both the temperature detection sensor for the upper space and the suction temperature detection sensor for the heat exchanger.

In the air conditioner of the first invention, it is possible to reduce temperature unevenness with a simple configuration, whether the target space is cooled or warmed. Ability to prevent only the upper part of the target space from being heated or cooled, prevent only the lower part of the target space from being heated or cooled, and ensure that the entire target space is in the target state. Adjustments can be made.

  In the air conditioner according to the second aspect of the present invention, it is possible to reduce temperature unevenness with a simple configuration, whether the target space is cooled or warmed. Further, it is possible to adjust the capacity so as to suppress the temperature difference between the upper side and the lower side in the target space.

In the air conditioner according to the third aspect of the present invention, it becomes possible to more effectively reduce temperature unevenness in the target space.

In the air conditioning apparatus according to the fourth aspect of the present invention, it is possible to reduce heat loss in the middle of guiding the conditioned air downward.

In the air conditioner of the fifth aspect of the invention, it is possible to more effectively suppress the heat loss of the temperature-controlled air supplied downward.

In the air conditioning apparatus according to the sixth aspect of the invention, the conditioned air can be supplied more uniformly to the upper and lower sides of the target space.

In the air conditioning apparatus according to the seventh aspect of the present invention, it is possible to more effectively regulate the temperature of the temperature-controlled object.

In the air conditioner according to the eighth aspect of the present invention, it is possible to switch to an air blowing state in which temperature unevenness is automatically reduced according to an input of cooling operation or heating operation.

In the air conditioner according to the ninth aspect of the present invention, it is possible to reduce the number of sensors by serving both as a temperature detection sensor for the upper space and a suction temperature detection sensor for the heat exchanger.

<Schematic configuration of air conditioner>
In FIG. 1, the schematic block diagram of the air conditioning apparatus 100 by which one Embodiment of this invention was employ | adopted is shown.

  As shown in FIG. 1, an air conditioner 100 in which an embodiment of the present invention is used performs air conditioning with a space SI inside a vinyl house 90 as a target space, and an upper space in the vinyl house 90. And the outdoor unit 2 arranged outside the vinyl house 90. In the vinyl house 90, for example, a crop C such as shiitake mushrooms is cultivated as a temperature-controlled object that needs to be adjusted in temperature for growth. A heat exchanger is accommodated in each of the indoor unit 1 and the outdoor unit 2, and a refrigerant circuit is configured by connecting the heat exchangers with refrigerant pipes, and the refrigerant circulates.

<Outline of configuration of refrigerant circuit of air conditioner 100>
The structure of the refrigerant circuit of the air conditioning apparatus 100 is shown in FIG.

  This refrigerant circuit is mainly composed of the indoor heat exchanger 10, the accumulator 24, the compressor 21, the four-way switching valve 22, the outdoor heat exchanger 23, the expansion valve 25, the control device 8, and the like.

  The indoor heat exchanger 10 provided in the indoor unit 1 performs heat exchange with the air in contact therewith. Further, the indoor unit 1 is provided with a cross flow fan 11 for sucking air in the vinyl house 90 and passing the air through the indoor heat exchanger 10 to discharge the air into the vinyl house 90. ing. The cross flow fan 11 is rotationally driven by one indoor fan motor 11 m provided in the indoor unit 1. When the cross flow fan 11 is rotationally driven, the indoor unit 1 takes in the air in the vinyl house 90 through the indoor heat exchanger 10 and returns the conditioned air subjected to heat exchange back into the vinyl house 90, thereby The space in the house 90 is air-conditioned.

  The outdoor unit 2 is connected to a compressor 21, a four-way switching valve 22 connected to the discharge side of the compressor 21, an accumulator 24 connected to the suction side of the compressor 21, and a four-way switching valve 22. An outdoor heat exchanger 23 and an expansion valve 25 connected to the outdoor heat exchanger 23 are provided. The expansion valve 25 is connected to a pipe via a liquid closing valve 26 and is connected to one end of the indoor heat exchanger 10 via this pipe. Moreover, the four-way switching valve 22 is connected to piping via the gas closing valve 27, and is connected to the other end of the indoor heat exchanger 10 via this piping. In addition, the outdoor unit 2 is provided with a propeller fan 28 for discharging the air after heat exchange in the outdoor heat exchanger 23 to the outside. The propeller fan 28 is rotationally driven by an outdoor fan motor 28m. Note that, by switching the connection state of the four-way switching valve 22, the air-conditioning apparatus 100 can switch between the heating operation and the cooling operation. The switching of the connection state of the four-way switching valve 22 is switched by a control command from the control device 8 described later.

  As shown in FIG. 2, the control device 8 includes an information processing device in the indoor unit 1 and an information processing device in the outdoor unit 2, and controls based on values obtained from various sensors T <b> 1 to T <b> 3. I do.

<Other configurations associated with installing an air conditioner in a vinyl house>
As shown in FIG. 1, the air conditioner 100 further includes a blowing switching device 40, a guide duct 60, an upper sock duct 50, a lower sock duct 70, various temperature sensors T, a remote controller 30, and the like.

  The blowing switching device 40 is provided so as to be connected to the conditioned air blowing side of the indoor unit 1 and includes a casing 41, a flap 47, and a wind direction switching control unit 48 as shown in FIG. The casing 41 includes an indoor unit side opening 46 for guiding conditioned air from the indoor unit 1 to the inside of the blowing switching device 40, an upper right opening 42 for guiding conditioned air to the upper space side of the vinyl house 90, and an upper left side. An opening 43 and a lower right opening 44 and a lower left opening 45 for guiding conditioned air to the lower space of the vinyl house 90 are provided. Here, the surface on which the upper right opening 42 and the upper left opening 43 are provided and the surface on which the lower right opening 44 and the lower left opening 45 are provided have substantially the same shape. The flap 47 has a shape that covers the surface on which the lower right opening 44 and the lower left opening 45 are provided so as to take a first state in which the lower right opening 44 and the lower left opening 45 are closed. The upper right opening 42 and the upper left opening 43 are covered so that the second state of closing the upper left opening 43 and the upper left opening 43 can be taken. And this flap 47 is provided so that it may rotate centering on the leeward side lower end part of the conditioned air flow sent from the indoor unit 1. A wind direction switching control unit 48 is provided on the rotating shaft portion of the flap 47. The wind direction switching control unit 48 is connected to the control device 8 described above, and rotates the flap 47 by performing control described later to switch between the first state and the second state.

  As shown in a schematic perspective view of FIG. 4, the guide duct 60 includes a right guide duct 61 having an upper end opening 60U (61U) and a lower end opening 60D (61D), an upper end opening 60U (62U), and a lower end opening 60D (62D). And a left guide duct 62. The right guide duct 61 extends downward so that its upper end 61U is aligned with the lower right opening 44 of the blowing switching device 40. The left guide duct 62 extends downward so that the upper end port 62 </ b> U matches the lower left opening 45 of the blowing switching device 40. These guide ducts 60 do not have an opening from the upper end port 60U to the lower end port 60D. For this reason, while maintaining the state of conditioned air, the conditioned air can be guided downward without leaking along the way.

  As shown in FIG. 1, the upper sock duct 50 is a duct made of paper and functioning as an air filter provided with innumerable fine openings, and includes a right upper sock duct 51 and a left upper sock duct 52. Yes. The upper right sock duct 51 extends from the upper right opening 42 toward the end (predetermined upper position) opposite to the end on which the indoor unit 1 is provided in a plan view in the space above the vinyl house 90. It is provided as follows. Similarly, the upper left sock duct 52 also has an upper left opening 43 toward the end (predetermined lower position) opposite to the end where the indoor unit 1 is provided in plan view in the space above the vinyl house 90. It is provided to extend from. The upper right sock duct 51 and the upper left sock duct 52 are respectively placed in a state of being hung from the ceiling by being hooked on a plurality of hooks provided on the ceiling of the vinyl house 90 (not shown).

  As shown in FIG. 1, the lower sock duct 70 is a duct made of paper and functioning as an air filter provided with innumerable fine openings, like the upper sock duct 50. And a sock duct 72. The lower right sock duct 71 extends from the lower end 61D of the right guide duct 61 toward the end opposite to the end where the indoor unit 1 is provided in plan view on the ground below the vinyl house 90. It is provided as follows. Similarly, the lower left sock duct 72 has a lower end 62D of the left guide duct 62 facing the end opposite to the end where the indoor unit 1 is provided in plan view on the ground below the vinyl house 90. It is provided to extend from. These lower right sock duct 71 and lower left sock duct 72 are arranged along the vicinity of the crop C planted on the ground in the vinyl house 90. Thereby, the temperature control effect with respect to the crop C can be improved more directly.

  As shown in FIGS. 1 and 2, the temperature sensor T includes a lower temperature sensor T1, an upper temperature sensor T2, and a suction temperature sensor T3. The lower temperature sensor T1 is disposed in a lower space in the space SI in the vinyl house 90, and transmits a detection value to the control device 8 and the like. The upper temperature sensor T2 is disposed in an upper space in the space SI in the vinyl house 90, and transmits a detection value to the control device 8 and the like. The suction temperature sensor T3 is disposed on the leeward side of the indoor heat exchanger 10 in the indoor unit 1 and transmits a detection value to the control device 8 and the like.

  The remote controller 30 is a controller that can input the operation mode of the air conditioning apparatus 100, receives an instruction for cooling operation or heating operation, and transmits the instruction to the control device 8.

<Air-conditioning control in a vinyl house using an air conditioner>
(Cooling operation)
First, the user inputs to the remote controller 30 that cooling operation is to be performed. For example, an input is received via a button or the like (not shown) provided on the remote controller 30.

  Then, the remote controller 30 that has received the cooling operation instruction informs the control device 8 that it has received a command to perform the cooling operation.

  Thereby, the control apparatus 8 performs control for performing a cooling operation. Specifically, the control device 8 switches the four-way switching valve 22 to a connection state for cooling operation.

  Then, as shown in FIG. 5, the control device 8 sends an instruction to the wind direction switching control unit 48, so that the flap 47 is placed in the first state in which the lower right opening 44 and the lower left opening 45 are closed. Rotate. Thereby, the conditioned air that has passed through the indoor heat exchanger 10 is supplied to the upper right sock duct 51 via the upper right opening 42 without going to the lower right opening 44 or the lower left opening 45 side, and the upper left opening. It is supplied to the upper left sock duct 52 through 43 to cool the space above the vinyl house 90.

  Here, as shown in FIG. 7, since the control device 8 has received an instruction for the cooling operation, the control device 8 performs the cooling operation capacity control based on the value detected by the upper temperature sensor T2. Specifically, when the value detected by the upper temperature sensor T2 is much higher than the target set temperature, the heat output is increased by increasing the drive output of the compressor 21 and increasing the rotational speed of the indoor fan motor 11m. Adjust the exchange capacity. When the temperature detected by the upper temperature sensor T2 reaches the target set temperature, the compressor 21 is stopped and the rotation of the indoor fan motor 11m is also stopped.

(Heating operation)
First, the user inputs to the remote controller 30 that heating operation is to be performed. For example, an input is received via a button or the like (not shown) provided on the remote controller 30.

  If it does so, the remote control 30 which received the instruction | indication of heating operation will notify having received the instruction | indication which performs heating operation with respect to the control apparatus 8. FIG.

  Thereby, the control apparatus 8 performs control for performing heating operation. Specifically, the control device 8 switches the four-way switching valve 22 to a connection state for heating operation.

  Then, as shown in FIG. 6, the control device 8 sends an instruction to the wind direction switching control unit 48 so that the flap 47 is placed in the second state in which the upper right opening 42 and the upper left opening 43 are closed. Rotate. Thus, the conditioned air that has passed through the indoor heat exchanger 10 passes through the right guide duct 61 via the lower right opening 44 to the lower right sock duct 71 without going to the upper right opening 42 or the upper left opening 43 side. It is supplied, passes through the left guide duct 62 through the lower left opening 45, and is supplied to the lower left sock duct 72 to warm the space near the crop C below the vinyl house 90.

  Here, as shown in FIG. 7, since the control device 8 has received the instruction for the heating operation, the control device 8 performs the capacity control of the heating operation based on the value detected by the lower temperature sensor T1. Specifically, when the value detected by the lower temperature sensor T1 is much lower than the target set temperature, the heat output is increased by increasing the drive output of the compressor 21 and increasing the rotational speed of the indoor fan motor 11m. Adjust the exchange capacity. When the temperature detected by the lower temperature sensor T1 reaches the target set temperature, the compressor 21 is stopped and the rotation of the indoor fan motor 11m is also stopped.

<Characteristics of the air conditioning apparatus 100 according to the present embodiment>
(1)
In the air conditioner 100 of the present embodiment, as the first state, relatively cold air that tends to gather downward is sent above the space SI, so that temperature unevenness when the space SI is cooled can be reduced. Furthermore, as the second state, by sending relatively warm air that tends to gather upward to the lower side of the space SI, it is possible to reduce temperature unevenness when the space SI is warmed.

  The conditioned air that is sent above the space SI in the first state and the conditioned air that is sent below the space SI in the second state both pass through the same indoor heat exchanger 10 and are subjected to heat exchange. Since it is air, one indoor heat exchanger 10 can be used in common in the first state and the second state, and the configuration can be simplified. Thereby, even when the space SI is cooled or warmed, temperature unevenness can be reduced with a simple configuration.

(2)
In the air conditioning apparatus 100 of this embodiment, since the guide duct 60 is provided, warm conditioned air can be more directly and reliably guided to the lower space. Thereby, reduction of the temperature nonuniformity of space SI in the vinyl house 90 can be made more effective.

  Further, the warm conditioned air that passes through the guide duct 60 and is guided to the lower side of the space SI does not leak out of the guide duct 60 on the way because the opening is not provided on the side surface of the guide duct 60. Thereby, the heat loss in the middle of guiding warm conditioned air to the lower part can be reduced. Warm conditioned air leaks from the middle from the lower sock duct 70 disposed below, but the guide duct 60 does not leak from the middle. Thereby, compared with the case where warm conditioned air leaks out in the middle of the guide duct 60, the structure which does not leak warm air in the middle of the guide duct 60 can improve the effect which warms the crop C more. .

(3)
In the air conditioning apparatus 100 of the present embodiment, an upper sock duct 50 and a lower sock duct 70 are employed as ducts for supplying conditioned air. The upper sock duct 50 not only guides the conditioned air to a position of the space SI opposite to the indoor unit 1, but also sends the conditioned air to everywhere in the space SI through a fine opening in the middle. . Further, the conditioned air is not only guided to the position opposite to the indoor unit 1 in the space SI by the lower sock duct 70, but also conditioned air is sent out through the fine openings toward everywhere in the space SI. It is. Thereby, conditioned air can be supplied more uniformly to the upper and lower portions of the space SI.

(4)
In the air conditioning apparatus 100 of this embodiment, it can switch to the ventilation | gas_flowing state which automatically reduces the temperature nonuniformity of space SI according to the input of the cooling operation or heating operation which the remote control 30 receives.

(5)
When performing temperature control by air conditioning for a relatively large space in a vinyl house as described above, especially when performing cooling operation, cold air tends to accumulate below the space, so it is positioned below. Even if the lower temperature sensor T1 detects the value cooled to the target temperature, the upper temperature sensor T2 positioned above may not detect the value cooled to the target temperature. In addition, when performing a heating operation, warm air tends to accumulate upward, so even if the upper temperature sensor T2 located above detects a value warmed to a target temperature, it is located below. The lower temperature sensor T1 may not detect a value warmed to a target temperature.

  On the other hand, in the air conditioning apparatus 100 of the present embodiment, when performing the cooling operation, the heat exchange capacity control is performed based on the detection value of the upper temperature sensor T2 disposed above, and the heating operation is performed. In this case, the heat exchange capacity control is performed based on the detection value of the lower temperature sensor T1 disposed below, so that the reference temperature sensor is switched by cooling and heating. As a result, it is possible to prevent only the upper part from being heated or cooled, to prevent only the lower part from being heated or cooled, and to adjust the capacity so that the entire space SI becomes a target state. it can. Then, it is possible to automatically switch the air blowing state so that the temperature unevenness is reduced in accordance with the input of the cooling operation or the heating operation.

<Modified example of air conditioner>
As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not restricted to these embodiment, It can change in the range which does not deviate from the summary of invention.

(A)
In the embodiment described above, the configuration using three temperature sensors, that is, the lower temperature sensor T1, the upper temperature sensor T2, and the suction temperature sensor T3 has been described as an example.

  However, the present invention is not limited to this. For example, as shown in FIG. 8, the suction temperature sensor T3 may also serve as the upper temperature sensor T2, and the upper temperature sensor T2 may be omitted. In this way, the detection value of the suction temperature sensor T3 of the indoor unit 1 is used as a detection value instead of the detection value of the upper temperature sensor T2 in the above embodiment, thereby reducing the number of sensors and simplifying the configuration. The same effect as the form can be achieved.

(B)
In the above-described embodiment, the guide duct 60 having no opening has been described as an example of the configuration in which the conditioned air is guided below the space SI in the vinyl house 90.

  However, the present invention is not limited to this. For example, as shown in FIG. 9, the right guide duct 61 (60) is provided with a heat insulating material 81 (80) covering the outside. Also good. The same applies to the left guide duct 62. The heat insulating material 80 may be provided in a part of the guide duct 60 or may be provided in the entire vertical direction. By covering the guide duct 60 with the heat insulating material 80 in this way, heat exchange with the outside of the temperature-controlled air passing through the guide duct 60 is reduced. As a result, heat exchange with the air around the guide duct 60 in the middle of the temperature-controlled air being led downward is suppressed, and the heat loss of the temperature-controlled air supplied downward is further reduced. It can be effectively suppressed.

(C)
In the above embodiment, the configuration in which the position of the flap 47 is automatically changed by the wind direction switching control unit 48 has been described as an example.

  However, the present invention is not limited to this, and for example, a configuration in which the above-described wind direction switching control unit 48 is not provided may be employed. In this case, the flap 47 may be manually switched so as to be in the same position as in the above embodiment when switching between cooling and heating.

(D)
In the above embodiment, the configuration in which the guide duct 60 and the lower sock duct 70 are directly connected via the lower end opening 60D of the guide duct 60 has been described as an example.

  However, the present invention is not limited to this. For example, the guide duct 60 and the lower sock duct 70 may be connected via a connection body having two openings.

  If the present invention is used, it is possible to reduce the temperature unevenness of the target space with a simple configuration, and therefore, it is particularly effective when used as an air conditioner that switches between cooling and heating.

The schematic block diagram which shows the installation state of the air conditioning apparatus concerning one Embodiment of this invention. The refrigerant circuit figure of an air conditioning apparatus. The perspective view of a blowing switching apparatus. The perspective view of a guide duct. The schematic sectional drawing which shows an upward blowing state. The schematic sectional drawing which shows a downward blowing state. Explanatory drawing regarding the position of the temperature sensor made into a reference | standard. Explanatory drawing regarding the position of the temperature sensor used as the reference | standard of the air conditioning apparatus which concerns on a modification (A). The schematic perspective view of the guide duct with a heat insulating material of the air conditioning apparatus which concerns on a modification (B).

8 Control device (adjustment unit)
10 Indoor heat exchanger (heat exchanger, capacity changing part)
11 Cross flow fan (capacity changing part)
11m indoor fan motor (capacity changing part)
21 Compressor (Capacity changing department)
30 Remote control (reception part)
40 Air outlet switching device (switching device)
42 Upper right opening (first air outlet)
43 Upper left opening (first air outlet)
44 Lower right opening (second air outlet)
45 Lower left opening (second air outlet)
50 Upper sock duct (upper duct)
60 Guide duct 60U Upper end opening 60D Lower end opening 70 Lower sock duct (lower duct)
80 Heat Insulation Material 100 Air Conditioner C Crop (Target temperature control)
SI Inside the vinyl house (target space)
T1 Upper temperature sensor T2 Lower temperature sensor T3 Upper temperature sensor (suction temperature sensor)

Claims (9)

An air conditioner (100) capable of cooling and heating a target space (SI),
A heat exchanger (10);
It has a 1st ventilation opening (42, 43) and a 2nd ventilation opening (44, 45), The air which passed this heat exchanger (10) via the 1st ventilation opening (42, 43) is the above-mentioned A first state to send above the target space (SI) and a second state to send the air that has passed through the heat exchanger (10) via the second blower opening (44, 45) to below the target space (SI). A switching device (40) for switching between two states;
An upper temperature sensor (T2) for detecting a temperature above the target space (SI);
A lower temperature sensor (T1) for detecting a temperature below the target space (SI);
A capacity changing section (10, 21, 11, 11m) capable of changing the cooling capacity or heating capacity;
During the heating operation, the ability of the ability changing unit is adjusted based on the detection value of the lower temperature sensor (T1), and during the cooling operation, the ability of the ability changing unit is adjusted based on the detection value of the upper temperature sensor (T2). An adjustment unit (8) to perform,
An air conditioner (100) comprising: An air conditioner (100) capable of cooling and heating a target space (SI),
A heat exchanger (10);
It has a 1st ventilation opening (42, 43) and a 2nd ventilation opening (44, 45), The air which passed this heat exchanger (10) via the 1st ventilation opening (42, 43) is the above-mentioned A first state to send above the target space (SI) and a second state to send the air that has passed through the heat exchanger (10) via the second blower opening (44, 45) to below the target space (SI). A switching device (40) for switching between two states;
An upper temperature sensor (T2) for detecting a temperature above the target space (SI);
A lower temperature sensor (T1) for detecting a temperature below the target space (SI);
A capacity changing section (10, 21, 11, 11m) capable of changing the cooling capacity or heating capacity;
An adjustment unit (8) that adjusts the capability of the capability changing unit so that a difference between detected values of the upper temperature sensor (T2) and the lower temperature sensor (T1) is a predetermined value or less;
An air conditioner (100) comprising: A guide duct (60) connected to the second air outlet (44, 45) and extending downward;
The air conditioner (100) according to claim 1 or 2 . The guide duct (60) has an upper end opening (60U) connected to the second blower opening (44, 45) and a lower end opening (60D), and the upper end opening (60U) and the There is no opening between the lower end (60D),
The air conditioning apparatus (100) according to claim 3 . A heat insulating material (80) for covering at least any part between the upper end opening (60U) and the lower end opening (60D) of the guide duct (60) from the outside;
The air conditioner (100) according to claim 4 . The conditioned air that has passed through the first air vents (42, 43) extends so as to be guided to a predetermined upper position above the target space (SI), and has a fine opening on the way to the predetermined upper position. An upper duct (50),
The conditioned air that has passed through the second air blowing port (44, 45) extends so as to be guided to a predetermined lower position below the target space (SI), and has a fine opening on the way to the predetermined lower position. And a lower duct (70),
The air conditioner (100) according to any one of claims 1 to 5 . The lower duct (70) is disposed in the vicinity of the temperature controlled object (C) present in the target space (SI).
The air conditioner (100) according to claim 6 . A reception unit (30) for receiving an input for performing a cooling operation and a heating operation;
The switching device (40) switches between the first state and the second state based on the received input,
The air conditioner (100) according to any one of claims 1 to 7 . A supply mechanism for supplying air to the heat exchanger (10) above the target space (SI);
The heat exchanger (10) is disposed above the target space (SI),
The upper temperature sensor (T3) is disposed on the suction side of the heat exchanger (10),
The air conditioner (100) according to any one of claims 1 to 8 .

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