JP2008122020A - Air conditioner indoor unit - Google Patents

Abstract

An indoor unit of an air conditioner that performs indoor humidification without newly providing a heating means for heating an adsorbent, reduces the size of the indoor unit, and improves humidification performance.
In an indoor unit 1 of an air conditioner, a suction port 4 through which indoor air is sucked and a blow-out port 6 through which air sucked from the suction port 4 blows out into the room are formed. The indoor unit main body 3 installed in the room, the cross-flow fan 8 installed in the indoor unit main body 3 and generating air flow sucked from the inlet 4 and blown out from the outlet 6, A heat exchanger 9 that is installed and heats the air that is sucked in from the suction port 4 and blown out from the blower port 6, and the upper side of the blower port 6 in the blowout passage 6 a between the cross-flow fan 8 and the blower port 6; And an adsorbent 11 that is located on the inner peripheral side in the flow direction of the blown air blown by the crossflow fan 8 and from which moisture is desorbed by the air heated by the heat exchanger 9 blown by the crossflow fan 8.
[Selection] Figure 1

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner having an adsorption / desorption function of a substance to be adsorbed such as a humidifying function.

  For example, as described in Patent Documents 1 and 2 below, an indoor unit of an air conditioner that performs indoor humidification using an adsorbent that can adsorb and desorb moisture in the air is known.

In these indoor units, the adsorbent is heated by blowing heated air to the adsorbent to desorb moisture from the adsorbent. A heater is used as means for heating the air blown to the adsorbent.
Japanese Patent No. 3132940 Japanese Patent No. 3254381

  However, in the air conditioner indoor unit described above, the following points are not considered.

  The indoor unit of an air conditioner is attached to an indoor wall surface or the like, and there is a strong demand for downsizing. In the indoor unit of the air conditioner described above, since the heater is used as a heating means for heating the adsorbent and desorbing moisture, it is necessary to secure a space for installing the heater in the indoor unit. This is the cause of the increase in size.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to humidify the room without newly providing a heating means for heating the adsorbent, to reduce the size of the indoor unit, and to further improve the humidification performance. It is providing the indoor unit of the air conditioner which can aim at improvement.

  A first feature according to an embodiment of the present invention is that, in an indoor unit of an air conditioner, the air sucked from the suction port blows out into the room below the suction port into which the indoor air is sucked and the suction port. An indoor unit body that is formed in a room and is installed in the room, a cross-flow fan that is installed in the indoor unit body and generates a flow of air that is sucked from the suction port and blown out from the blower port; A heat exchanger that is installed in the machine body and heats air that is sucked from the suction port and blown out from the blower port, and above the blower port in the blowout passage between the cross-flow fan and the blower port. An adsorbent that is located on the inner peripheral side in the flow direction of the blown air blown by the crossflow fan and from which moisture is desorbed by the air heated by the heat exchanger blown by the crossflow fan; It is be provided.

  According to the present invention, indoor humidification can be performed without newly providing a heating means for heating the adsorbent, the indoor unit including the adsorbent can be downsized, and the humidification performance can be improved. Can be achieved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
An indoor unit 1 of an air conditioner according to a first embodiment of the present invention has an indoor unit main body 3 attached to the inner wall surface of a wall 2 that partitions the room from the outside as shown in FIG. A plurality of suction ports 4 are formed in the front surface portion and the upper surface portion of the main body 3. A blower outlet 6 whose opening degree can be adjusted by a louver 5 is formed in the lower part of the indoor unit body 3.

  As shown in FIGS. 1 and 2, the indoor unit body 3 includes an air filter 7, a cross flow fan 8, a heat exchanger 9, an outdoor exhaust fan 10, an adsorbent 11, and a controller 12. is set up.

  The air filter 7 is disposed at a position facing the suction port 4 between the front surface portion and the upper surface portion of the indoor unit body 3 and is formed in a mesh shape. When dust is contained in the air sucked from the suction port 4, the dust is collected by the air filter 7 in the process in which the air passes through the air filter 7.

  The heat exchanger 9 is connected to an outdoor heat exchanger or the like provided in an outdoor unit (not shown) installed outside by two refrigerant pipes 13 and 14, and the refrigerant flows into the interior for cooling. It is provided to be switchable between an operation state and a heating operation state. The heat exchanger 9 cools the air passing through the heat exchanger 9 at a low temperature during the cooling operation, and heats the air passing through the heat exchanger 9 at a high temperature during the heating operation.

  The outdoor exhaust fan 10 is installed in an exhaust pipe 15 communicating with the outside, and a motor 16 that rotates the outdoor exhaust fan 10 is connected to the outdoor exhaust fan 10. The exhaust pipe 15 is connected to an intake pipe 17 communicating with the outside through the adsorbent 11, and one end of the exhaust pipe 15 and one end of the intake pipe 17 pass through the wall 2 and open to the outside of the room. is doing. When the outdoor exhaust fan 10 is driven, outdoor air is sucked from the intake pipe 17, and the sucked air flows in a direction indicated by an arrow a in FIGS. 2, 3, and 5. The air is blown through first air passages 30a and 30b, which will be described later, and after being blown through the first air passages 30a and 30b, the air is exhausted outside through the exhaust pipe 15. The intake pipe 17, the exhaust pipe 15, and the two refrigerant pipes 13 and 14 are penetrated to the outside by using one hole 2 a provided in the wall 2 in common. The hole 2a is provided at a position on the back side of the indoor unit main body 3 that cannot be seen from the indoor side, thereby improving the appearance.

  The cross-flow fan 8 is a cross-flow fan formed in a long cylindrical shape, and is installed in the longitudinal direction in the indoor unit main body 3 and is located in parallel with the longitudinal direction of the adsorbent 11. That is, when the indoor unit 1 is attached to the wall 2, the cross flow fan 8 installed in the indoor unit body 3 is oriented in a horizontal direction with the longitudinal direction of the cross flow fan 8 parallel to the wall 2. . The cross flow fan 8 is connected to a motor 18 that rotationally drives the cross flow fan 8. When the cross flow fan 8 is driven, indoor air is sucked into the indoor unit main body 3 from the suction port 4, and the sucked air is heated or cooled by passing through the heat exchanger 9, and is heated. Hot air or cooled cold air is blown out into the room from the air outlet 6.

  As shown in FIGS. 3 to 5, the adsorbing body 11 is formed by a cylindrical adsorbing plate unit 19 and a holding body 20 that holds the adsorbing plate unit 19.

  The suction plate unit 19 has a long partition 21 whose outer shape has a long cylindrical shape and a Y-shaped cross section, a plurality of suction plates 22 and a ring that can adsorb and desorb moisture and a ring. A shape frame 23 is provided. The adsorption plate 22 is formed by applying adsorbent particles such as zeolite on the surface of a substrate made of paper or the like. The adsorbent adsorbs moisture at a low temperature (room temperature) and desorbs the adsorbed moisture at a high temperature. The suction plate 22 is formed by bending a long plate-shaped member in a direction in which one surface is convex and the other surface is concave, and the convex side is arranged toward the center side of the partition 21. Has been. Such a curved shape increases the area of the suction plate 22 and increases the amount of suction. The plurality of suction plates 22 are arranged in the same manner in the three regions partitioned by the partition 21. These suction plates 22 are connected to each other with a gap capable of blowing air between the surfaces with the surfaces facing each other. In addition, the partition 21 is provided so that the adsorption | suction board 22 group may be divided into 3 substantially equally.

  The plurality of suction plates 22 are connected by fixing both ends in the longitudinal direction of the suction plates 22 with ring-shaped frames 23. The ring-shaped frame 23 is fixed to the three apexes of the Y-shaped partition 21. Rotating shafts 24 are fixed to both end portions on the center line of the partition body 21 and extend outwardly, which is a direction away from the suction plate 22 along the longitudinal direction of the suction plate 22.

  The holding body 20 is formed in a cylindrical shape and has an inner diameter dimension slightly larger than an outer diameter dimension of the suction plate unit 19. The holding body 20 holds the suction plate unit 19 so as to be rotatable about the rotation shaft 24 therein. The suction plate unit 19 is incorporated into the holding body 20 by making the holding body 20 into a two-part structure along the longitudinal direction, or between a first cover part 25 and one second cover part 26, which will be described later. This can be done by using a split structure.

  The holding body 20 includes a first cover portion 25 that hermetically covers an outer peripheral portion in a direction along the longitudinal direction of a part of the suction plates 22 in the suction plate unit 19 to be held, and another part of the suction plate unit 19 to be held. A pair of second cover portions 26 that hermetically cover both ends of the suction plate 22 in the longitudinal direction. The first cover portion 25 is formed to cover a range of about 240 ° in the circumferential direction of the suction plate unit 19. The second cover portion 26 is formed with a support hole 27 on which the rotary shaft 24 is rotatably supported. The second cover portion 26 is formed in a sector shape that extends at an angle of about 120 ° around the support hole 27 so as to cover the end portion in the longitudinal direction of the suction plate 22 arranged in one region partitioned by the partition body 21. ing. The range of about 240 ° covered by the first cover portion 25 and the range of about 120 ° covered by the second cover portion 26 are arranged so as to be exactly opposite in the circumferential direction.

  A motor 28 that rotationally drives the suction plate unit 19 around the center line of the rotary shaft 24 is connected to the rotary shaft 24 of the suction plate unit 19 via a speed reduction mechanism 29 that meshes a plurality of gears.

  As shown in FIGS. 3 and 5, first air passages 30 a and 30 b and a second air passage 31 through which air can be blown are formed in the adsorbent 11. The first air passages 30a and 30b are formed along the longitudinal direction of the suction plate 22 surrounded by the first cover portion 25 and a part of the suction plate 22, and are blown when the outdoor exhaust fan 10 is driven. This is an adsorption air path through which air flows and moisture in the air is adsorbed by the adsorption plate 22. The inlet and outlet of the air passage are openings in the range of about 240 ° provided in the left and right second cover portions 26. The second air path 31 is formed in a direction orthogonal to the longitudinal direction of the suction plate 22 surrounded by the pair of second cover portions 26 and another part of the suction plate 22, and the cross flow fan 8 is driven. This is a desorption air path through which air heated by the heat exchanger 9 and heated by the heat exchanger 9 flows and moisture is desorbed from the adsorption plate 22. The air flow in the second air path 31 is indicated by an arrow b in FIGS. 1, 3, and 5. The intake pipe 17 is connected to the inlet 30A side of the first air paths 30a and 30b, and the exhaust pipe 15 is connected to the outlet 30B side of the first air paths 30a and 30b.

  The installation position of the adsorbent 11 in the indoor unit body 3 is above the air outlet 6 in the air outlet passage 6 a between the cross air fan 8 and the air outlet 6, and the flow of air blown by the cross air fan 8. It is the nose 32 side that is the inner peripheral side in the direction. The nose 32 is a convex structure formed to generate a flow of air blown out from the outlet 6 as the cross-flow fan 8 rotates, and protrudes to a position close to the outer periphery of the cross-flow fan 8.

  In addition, the installation direction of the adsorbent 11 in the indoor unit body 3 is such that the outlet of the second air path 31 faces the outlet 6 and the opening of about 120 ° of the first cover portion 25 is in the outlet passage 6a. It is arranged to face.

  In the indoor unit body 3, the air blown by the crossflow fan 8 and positioned on the upstream side of the adsorbent 11 along the flow direction of the air heated by the heat exchanger 9 is heated and blown. A wind direction plate 33 that guides the air path 31 is provided. The wind direction plate 33 functions as a damper, and a motor 34 is connected as means for rotating the wind direction plate 33. The wind direction plate 33 is rotated to a position that directs the air flow blown by the cross-flow fan 8 in the direction of the second air path 31 during the humidifying operation, and the air flow to the second air path 31 is not during the humidifying operation. It is rotated to the position where it interrupts.

  The controller 12 includes a programmed microcomputer and its peripheral devices. The controller 12 is housed in the indoor unit body 3 and controls a control object in the indoor unit body 3. As shown in FIG. 6, the controller 12 includes a motor 28 that rotationally drives the suction plate unit 19 of the adsorption body 11, a motor 16 that rotationally drives the outdoor exhaust fan 10, and a motor that rotationally drives the cross-flow fan 8. 18, a motor 34 that rotates the wind direction plate 33, and a motor 36 that rotationally drives a compressor 35 provided in the outdoor unit are connected. Further, the controller 12 is connected to a temperature sensor 37 that detects the temperature of the heat exchanger 9, a light receiving unit 39 that receives an infrared signal from a remote controller 38 that operates the operating state of the air conditioner.

  The operation control of the air conditioner will be described based on the flowchart of FIG. The controller 12 monitors whether or not a signal is input from the remote control 38 (S1). When there is a signal input from the remote control 38 (YES in S1), it is determined whether or not the signal is a heating operation start signal (S2), and whether there is a humidification operation start signal. Is determined (S3).

  If the input signal is not a heating operation start signal (NO in S2), operation control is performed in a mode other than the input heating operation (S4). When the start signal for the heating operation is input (YES in S2) but the start signal for the humidification operation is not input (NO in S3), the normal heating operation control without the humidification operation is performed (S5). .

  When the start signal for the heating operation is input (YES in S2) and the start signal for the humidification operation is input (YES in S3), the humidification operation is executed.

  When the humidification operation is executed, the timer built in the controller 12 starts counting (S6), and the value of the temperature sensor 37 that measures the temperature of the heat exchanger 9 is read (S7). Then, based on the measured value of the temperature sensor 37, the operating frequency of the compressor driving motor 36 is controlled so that the value of the temperature sensor 37 rises to a target value suitable for the humidifying operation (S8). Thereby, the temperature of the warm air blown from the blower outlet 6 rises to a temperature suitable for humidification using the adsorbent 11 and is maintained.

  Further, the wind direction plate 33 is rotated to a position for guiding a part of the warm air blown by the cross flow fan 8 toward the second air path 31 of the adsorbent body 11 (S9), and the cross flow fan 8 is driven ( S10), the outdoor exhaust fan 10 is driven (S11).

  Here, when the outdoor exhaust fan 10 is driven in step S <b> 11, outdoor air is sucked into the indoor unit main body 3 through the intake pipe 17, and the sucked air is the first air of the adsorbent 11. The air is blown through the passages 30a and 30b, blown through the first air passages 30a and 30b, and then exhausted to the outside through the exhaust pipe 15. At this time, the blown air hits the adsorption plate 22 in the first air passages 30a and 30b, so that moisture contained in the outdoor air is adsorbed by the adsorption plate 22 in the first air passages 30a and 30b. The

  Further, when the cross flow fan 8 is driven in step S10, indoor air is sucked into the indoor unit main body 3 from the suction port 4, and the sucked air is heated by the heat exchanger 9 to become hot air. The air is blown into the room from the outlet 6 and the heating operation is performed.

  Further, in step S9, the wind direction plate 33 is rotated to the guide position of the adsorbent 11 toward the second air path 31 side, whereby one of the hot air heated by the heat exchanger 9 and blown to the outlet 6 side. The part is guided to the second air path 31 side of the adsorbent 11, and this air is blown through the second air path 31, and then blown into the room through the outlet 6 after being blown through the second air path 31. In this process, the heated air hits the adsorption plate 22 in the second air path 31, and moisture is desorbed from the adsorption plate 22. The moisture desorbed from the suction plate 22 is discharged into the room by being included in the warm air blown out from the outlet 6 by driving the cross flow fan 8, and the room is humidified.

  Thereafter, it is determined whether or not the count time “T” of the timer has passed a preset time for performing adsorption of moisture to the adsorption plate 22 and desorption of moisture from the adsorption plate 22 (S12). In addition, it is determined whether or not a humidifying operation end signal has been input (S13).

  If the count time “T” of the timer has passed the set time (YES in S12) before the humidifying operation end signal is input (NO in S13), the motor 28 is driven and the suction plate unit 19 is moved. It is rotated 120 ° (S14), the timer is reset and restarted (S15).

  When the suction plate unit 19 is rotated by about 120 ° in step S14, any two tops of the Y-shaped partitioning body 21 are positioned at the opening end of the first cover portion 25 after the rotation. . Therefore, the suction plate 22 located in the second air path 31 before the rotation moves into the first air path 30a, and the suction plate 22 located in the first air path 30a before the rotation moves to the first air path 30a. The suction plate 22 moves into the air path 30b and is located in the first air path 30b before the rotation, and moves into the second air path 31. This is repeated every set time, and the suction plate unit 19 rotates about 120 ° in the same direction every set time.

  The suction plate 22 moved from the first air path 30b to the second air path 31 is hit by air that is blown by driving the cross-flow fan 8 and heated by the heat exchanger 9, and 2 Moisture is desorbed from the adsorption plate 22 that has moved into the air path 31. The moisture desorbed from the suction plate 22 is discharged into the room by being included in the warm air blown out from the outlet 6 by driving the cross flow fan 8, and the room is humidified.

  On the other hand, for the adsorption plate 22 moved from the first air path 30a into the first air path 30b and the adsorption plate 22 moved from the second air path 31 into the first air path 30a, an outdoor exhaust fan. The air sucked from the outside through the intake pipe 17 by the drive of 10 hits, and moisture is adsorbed to the adsorption plate 22 moved into the first air paths 30a and 30b.

  Therefore, as in this embodiment, three air paths 30a, 30b, and 31 are provided, two of which are used for moisture adsorption and the other one is used for moisture desorption. The time for which moisture is adsorbed to the plate 22 can be set longer. That is, in general, the time required for adsorption of the adsorbent is longer than the time required for desorption. Therefore, in this embodiment, the adsorption plate 22 is divided into three groups, one of which is used for desorption and the other two are used for adsorption, so that the adsorption time is doubled. Can be set. Thereby, the amount of moisture adsorbed on the adsorption plate 22 can be increased, and the humidification performance can be enhanced by increasing the amount of moisture desorbed from the adsorption plate 22.

  When the end signal of the humidifying operation is input (YES in S13), the timer is reset (S16), the driving of the outdoor exhaust fan 10 is stopped (S17), and the wind direction plate 33 is the second air of the adsorbent 11. It is rotated to a position where air flow to the path 31 is blocked (S18), and normal heating operation control is started (S5).

  In such a configuration, part of the air blown by the cross flow fan 8 and heated by the heat exchanger 9 flows in the direction indicated by the arrow b in FIGS. 1, 3, and 5, and enters the second air path 31. And desorbs moisture from the adsorption plate 22 of the adsorbent 11. For this reason, it is not necessary to provide a new heating means for heating the adsorbent 11 in order to desorb moisture from the adsorbent 11, and the indoor unit 1 can be downsized while being an indoor unit 1 to which a humidifying mechanism is added. be able to.

  The installation position of the adsorbent 11 in the indoor unit main body 3 is on the upper side in the outlet 6 in the outlet passage 6 a between the cross-flow fan 8 and the outlet 6, and the air blown by the cross-flow fan 8 is The outlet of the second air path 31 is opposed to the air outlet 6. Due to the characteristics of the cross-flow fan 8, the temperature of the hot air blown out is higher at the position above the outlet 6 in the outlet passage 6a. In addition, the inner peripheral side in the flow direction of the air blown by the crossflow fan 8 is a place where the airflow is the largest even when the airflow blown by the crossflow fan 8 is small. By installing the adsorbent 11 at such a location, moisture is efficiently desorbed from the adsorbent 11 using hot air (air heated by the heat exchanger 9) blown by the cross-flow fan 8. And humidification performance can be enhanced.

  Further, since the second air path 31 is provided in such a direction that the outlet of the second air path 31 faces the outlet 6, the moisture desorbed from the adsorption plate 22 in the second air path 31 is directly removed. It can be discharged indoors and the room can be efficiently humidified.

  The air heated by the heat exchanger 9 is directed toward the second air path 31 upstream of the adsorbent 11 along the flow direction of the air blown by the cross-flow fan 8 and heated by the heat exchanger 9. Since the wind direction plate 33 to be guided is provided, the air heated by the heat exchanger 9 can be reliably guided to the second air path 31. For this reason, it is possible to efficiently desorb moisture by blowing air heated by the heat exchanger 9 to the second air path 31.

  Moreover, the wind direction plate 33 is provided so that the angle with respect to the flow of the air blown by the cross flow fan 8 (air heated by the heat exchanger 9) can be adjusted. For this reason, when the amount of humidification is increased, the airflow direction plate 33 is rotated in the direction of increasing the amount of air guided to the second air path 31, and the amount of moisture desorbed from the adsorption plate 22 can be increased. The amount can be adjusted.

  The wind direction plate 33 is rotated to a position that blocks the flow of air to the second air path 31 except during the humidifying operation. For this reason, the adhesion of dirt in the second air path 31 and the condensation during cooling operation can be prevented, and the function deterioration of the adsorbent 11 caused by the adhesion of dirt and the condensation can be suppressed.

  In order to secure the air paths 30a, 30b, 31 when rotating the suction plate unit 19, the positions of the top of the partition 21 and the opening end of the first cover 25 of the holding body 20 are accurately set. Must match. Therefore, it is preferable not to simply control the rotation angle of the motor 28 but to provide some rotation angle sensor or position detection sensor and control the rotation angle based on the sensor output.

(Second Embodiment)
An air conditioner indoor unit 1A according to a second embodiment of the present invention will be described with reference to FIG. Note that, in the second embodiment and subsequent embodiments, the same components as those of the other embodiments described above are denoted by the same reference numerals, and redundant description is omitted.

  This indoor unit 1A is obtained by eliminating the intake pipe 17 from the indoor unit 1 described in the first embodiment, and instead of the air sucked from outside, the indoor air is passed through the first air path 30a of the adsorbent body 11. , 30b. Since the other parts are the same as those of the first embodiment, the description thereof will be omitted, and the changed parts will be described below mainly.

  The right side surface of the indoor unit main body 3A is provided with a second suction port 41 for sucking room air. The second suction port 41 is connected to the inlet 30A of the first air passages 30a and 30b via a linear duct 42. Communicate. For this reason, when the outdoor exhaust fan 10 is rotationally driven, indoor air is sucked into the indoor unit body 3A from the second suction port 41 via the duct 42, and the sucked air passes through the first air path. The air is blown through 30a and 30b, enters the exhaust pipe 15 through the outlet 30B, passes through the exhaust pipe 15 and is exhausted to the outside.

  At this time, the indoor air hits the adsorption plate 22 in the first air passages 30a and 30b, so that moisture contained in the indoor air is adsorbed by the adsorption plate 22 in the first air passages 30a and 30b, and the exhaust air is exhausted. Dry air with reduced moisture is exhausted from the pipe 15 to the outside of the room. As a result, the moisture in the room is held by the adsorption plate 22, and when the adsorption plate 22 rotates and moves into the second air path 31, air is blown by the cross-flow fan 8 and passed through the heat exchanger 9 and heated Thus, the moisture adsorbed on the adsorption plate 22 is desorbed and returned to the room. During this time, the outside air containing moisture corresponding to the humidity of the outside air at that time flows from the gap of the room by the amount that the room air is reduced by the exhaust by the outdoor exhaust fan 10, and consequently the room humidity Will rise.

  In such a configuration, according to the second embodiment, only the exhaust pipe 15 passes through the wall 2 and extends outside the room, so that the hole 2a in the wall 2 can be small. Further, the second suction port 41 is formed on the side opposite to the outdoor exhaust fan 10 in the indoor unit body 3A and on the inlet 30A side of the first air passages 30a and 30b, and the second suction port 41 Since the first air paths 30a and 30b are connected by the linear duct 42, the length of the duct 42 can be shortened and the blowing resistance is reduced. That is, since the second suction port 41, the duct 42, and the adsorbing body 11 are arranged substantially linearly to shorten the ventilation path, the air volume by the outdoor exhaust fan 10 is increased, and the adsorption time can be shortened. Furthermore, the air blown by the outdoor exhaust fan 10 exhausts the indoor air to the outside, and various effects such as enabling ventilation by operating the outdoor exhaust fan 10 regardless of the operation / stop of the humidification operation. is there.

(Third embodiment)
An indoor unit 1B of an air conditioner according to a third embodiment of the present invention will be described with reference to FIGS.

  This indoor unit 1B uses an adsorbent 51 in place of the adsorbent 11 used in the indoor unit 1 described in the first embodiment. Since the other parts are the same as those of the first embodiment, the description thereof will be omitted, and the changed parts will be described below mainly.

  As shown in FIG. 12, the adsorbing body 51 is formed by an adsorbing plate unit 52 and a holding body 53.

  The adsorption plate unit 52 has a plurality of adsorption plates 54 that are formed in a long plate shape (rectangular shape) and can adsorb and desorb moisture, and these adsorption plates 54 face each other. And it is connected with the clearance gap which can ventilate between those surfaces.

  The plurality of suction plates 54 are connected by fixing both ends in the longitudinal direction of the suction plates 54 with ring-shaped frames 55, and the outer shape of the suction plate unit 52 is cylindrical.

  The ring-shaped frame 55 is provided with a partition plate 56 that extends in parallel with the suction plate 54 and is fixed in the diameter direction of the ring-shaped frame 55. A rotation shaft 57 extending outward, which is a direction away from the suction plate 54 along the longitudinal direction of the suction plate 54, is fixed to the central portion of the side surface of the partition plate 56. Similarly to the suction plate 54, the partition plate 56 divides the plurality of suction plates 54 into two groups from one end to the other end of the ring-shaped frame 55, and also serves to reinforce the suction plate unit 52.

  The holding body 53 holds the suction plate unit 52 so as to be rotatable around the center line of the rotation shaft 57. The holding body 53 includes a first cover portion 58 that hermetically covers an outer peripheral portion in a direction along the longitudinal direction of the suction plate 54 on one side partitioned by the partition plate 56 in the suction plate unit 52 to be held, and a suction plate unit to be held. 52, a pair of second cover portions 59 that hermetically cover both ends in the longitudinal direction of the other suction plate 54 partitioned by the partition plate 56. The first cover portion 58 is formed in a semi-cylindrical shape that covers a range of about 180 ° in the circumferential direction of the suction plate unit 52. The second cover part 59 is formed in a semicircular shape. The second cover part 59 is formed with a support hole 60 on which the rotary shaft 57 is rotatably supported.

  As shown in FIG. 11, the adsorbent 51 is formed with a first air path 61 that is an adsorption air path through which air can be blown and a second air path 62 that is a desorption air path. The first air path 61 is formed along the longitudinal direction of the adsorption plate 54 surrounded by the first cover portion 58 and a part of the adsorption plate 54, and the direction of the arrow a when the outdoor exhaust fan 10 is driven. The air flows through and the moisture in the air is adsorbed by the adsorption plate 54. The second air path 62 is formed by being surrounded by the pair of second cover portions 59 and another part of the suction plate 54, and is blown and heated by the heat exchanger 9 when the cross flow fan 8 is driven. Part of the air that has flowed in the direction of arrow b causes moisture to be desorbed from the adsorption plate 54. The intake pipe 17 is connected to the inlet 61 </ b> A side of the first air path 61, and the exhaust pipe 15 is connected to the outlet 61 </ b> B side of the first air path 61. Further, the partition plate 56 is positioned between the first air path 61 and the second air path 62 so that air does not travel between the first air path 61 and the second air path 62. ing.

  The installation position of the adsorbent 51 in the indoor unit main body 3B is on the upper side of the air outlet 6 in the air outlet passage 6a between the cross air fan 8 and the air outlet 6 and the flow of air blown by the cross air fan 8 It is the nose 32 side that is the inner peripheral side in the direction.

  In addition, the installation direction of the adsorbent 51 in the indoor unit main body 3B is set so that the outlet of the second air path 62 faces the outlet 6.

  In the indoor unit main body 3B, the air heated by the heat exchanger 9 is located upstream of the adsorbent 51 along the flow direction of the air blown by the crossflow fan 8 and heated by the heat exchanger 9. A wind direction plate 33 that guides toward the second air path 62 is provided.

  In such a configuration, during the humidification operation, air blown by driving the outdoor exhaust fan 10 flows in the direction of arrow a, and moisture is adsorbed by the adsorption plate 54 in the first air path 61. On the other hand, part of the warm air blown by the driving of the cross flow fan 8 flows in the direction of arrow b, moisture is desorbed from the adsorption plate 54 in the second air path 62, and the desorbed moisture is discharged from the outlet 6. Released into the room.

  During the humidifying operation, the suction plate unit 52 is rotated by 180 ° for each set time, so that the suction plates 54 are alternately positioned in the first air path 61 and the second air path 62, and the suction plate 54. The adsorption of moisture and the desorption of the adsorbed moisture are repeated.

  When the moisture is desorbed from the adsorption plate 54, a part of the air blown by the cross-flow fan 8 and heated by the heat exchanger 9 is moved in the direction indicated by the arrow b in FIGS. The air is blown through the two air paths 62. For this reason, it is not necessary to provide a new heating means for heating the adsorbent 51 in order to desorb moisture from the adsorbent 51, and the indoor unit 1B can be downsized while being an indoor unit 1B to which a humidifying mechanism is added. be able to.

  The installation position of the adsorbent 51 in the indoor unit main body 3B is on the upper side in the blowout port 6 in the blowout passage 6a between the crossflow fan 8 and the blowout port 6, and the air blown by the crossflow fan 8 is on the upper side. The inner peripheral side in the flow direction. Due to the characteristics of the cross-flow fan 8, the temperature of the hot air blown out is higher at the position above the outlet 6 in the outlet passage 6a. In addition, the inner peripheral side in the flow direction of the air blown by the crossflow fan 8 is a place where the airflow is the largest even when the airflow blown by the crossflow fan 8 is small. By installing the adsorbent 51 in such a place, the desorption of moisture from the adsorbent 51 using the warm air blown by the cross-flow fan 8 (air heated by the heat exchanger 9) is efficiently performed. And humidification performance can be enhanced.

  Further, since the second air path 62 is provided in such a direction that the outlet of the second air path 62 faces the outlet 6, the moisture desorbed from the adsorption plate 54 in the second air path 62 is directly removed. It can be discharged indoors and the room can be efficiently humidified.

(Fourth embodiment)
An indoor unit 1C for an air conditioner according to a fourth embodiment of the present invention will be described with reference to FIGS. 13 and 14.

  This indoor unit 1C uses an adsorbent 71 in place of the adsorbent 11 used in the indoor unit 1 described in the first embodiment. Since the other parts are the same as those of the first embodiment, the description thereof will be omitted, and the changed parts will be described below mainly.

  As shown in FIG. 14, the adsorbent 71 includes a plurality of adsorbing plates 72 formed by applying adsorbent particles such as zeolite on the surface of a rectangular base material made of paper or the like, and these It is formed in a rectangular parallelepiped shape by a support frame 73 that supports both ends of the suction plate 72. The suction plate 72 is formed in a long shape, and adjacent suction plates 72 are arranged with a gap. Central portions of the support frames 73 at both ends are openings through which air can flow.

  The indoor unit 1C is formed with an accommodating portion 74 that is located between the outer plate of the indoor unit main body 3C and the lower end side of the heat exchanger 9 and accommodates the adsorbent 71 in a slidable manner. The accommodating portion 74 is formed in a horizontally long shape parallel to the rotation axis of the cross flow fan 8. The adsorbent 71 is accommodated in the accommodating portion 74 in a direction in which the longitudinal direction of the adsorbent 71 and the rotation axis of the cross flow fan 8 are parallel to each other. The intake pipe 17 is connected to one end side in the longitudinal direction of the accommodating portion 74, and the exhaust pipe 15 is connected to the other end side in the longitudinal direction of the accommodating portion 74.

  The adsorbent 71 slidably accommodated in the accommodating portion 74 is exposed from the position accommodated in the accommodating portion 74 indicated by a solid line (the position retracted from the blowout passage 6a) and the accommodating portion 74 indicated by a two-dot chain line. It is slidably provided at a position located in the blowout passage 6a. When the adsorber 71 is located at the retracted position indicated by the solid line, a space between adjacent adsorbing plates 72 becomes a first air path (adsorption air path) 75 through which air blown by driving the outdoor exhaust fan 10 flows. . In FIG. 14, the direction of arrow a is the direction of air blown through the first air path 75. When the adsorbent 71 is located at an exposure position indicated by a two-dot chain line, a second air path (air between the adjacent adsorbing plates 72 flows through the air blown by the drive of the cross-flow fan 8 and heated by the heat exchanger 9 ( Desorption air path) 76. In FIG. 14, the direction of arrow b is the direction of air blown through the second air path 76.

  When the adsorbing body 71 is located at the exposure position indicated by the two-dot chain line, the adsorbing body 71 is above the blowout port 6 in the blowout passage 6a and is the inner circumference in the flow direction of the air blown by the crossflow fan 8. It is located on the nose 32 side. Further, in the adsorbent 71 located at the exposure position indicated by the two-dot chain line, the inlet of the second air path 76 opens to the side of the cross-flow fan 8, and the outlet of the second air path 76 opens to the outlet 6 side. .

  When the adsorbent 71 is located at the exposure position indicated by the two-dot chain line, the adsorbent 71 is oriented such that the inlet of the second air path 76 opens to the side of the cross-flow fan 8 and the outlet of the second air path 76 blows off. The direction is opposite to the outlet 6 side.

  As a moving means for moving the adsorbing body 71 to a storage position indicated by a solid line and an exposure position indicated by a two-dot chain line, a rack 77 provided on the adsorbing body 71 and positioned exposed from the storage portion 74 and a pinion meshing with the rack 77 78 and a motor 79 that rotationally drives the pinion 78 are provided.

  In such a configuration, the case where the humidifying operation is performed during the heating operation in which the cross flow fan 8 and the heat exchanger 9 are driven will be described.

  First, the adsorbent 71 is positioned at the housing position indicated by the solid line, and the outdoor exhaust fan 10 is driven. As a result, outdoor air passes through the intake pipe 17 and is sucked into the indoor unit main body 3C, and blown into the first air path 75 of the adsorbent 71 accommodated in the accommodating portion 74. After the air is blown through 75, the air is exhausted outside through the exhaust pipe 15. In this process, the suction plate 72 blows through the first air path 75 and the moisture in the air is absorbed by the suction plate 72.

  After the outdoor exhaust fan 10 is driven for a set time, the drive of the outdoor exhaust fan 10 is stopped, and the motor 79 is driven to slide the adsorbent 71 to the exposed position indicated by the two-dot chain line. Thereby, a part of the warm air sucked from the suction port 4 by driving of the cross flow fan 8 and heated by the heat exchanger 9 and blown into the room from the blower outlet 6 blows through the second air path 76 of the adsorbent 71. Is done. In this process, the air heated by the heat exchanger 9 hits the adsorption plate 72, moisture is desorbed from the adsorption plate 72, and the desorbed moisture is released into the room by being included in the warm air blown out from the outlet 6. The room is humidified.

  When the set time has elapsed after the adsorber 71 has been slid to the position indicated by the two-dot chain line, the adsorber 71 is again slid to the storage position indicated by the solid line by driving the motor 79, and the outdoor exhaust fan 10 is Driven again, moisture is adsorbed to the suction plate 72.

  In this manner, indoor humidification is performed by repeatedly sliding the adsorbent 71 to the storage position and the exposure position and turning the outdoor exhaust fan 10 on and off.

  The position of the adsorbent 71 when slid to the exposure position indicated by the two-dot chain line is the upper side of the outlet 6 in the outlet passage 6a and the inner peripheral side in the flow direction of the air blown by the cross flow fan 8. ing. Due to the characteristics of the cross-flow fan 8, the temperature of the hot air blown out is higher at the position above the outlet 6 in the outlet passage 6a. In addition, the inner peripheral side in the flow direction of the air blown by the crossflow fan 8 is a place where the airflow is the largest even when the airflow blown by the crossflow fan 8 is small. By locating the adsorbent 71 at such a location, moisture is efficiently desorbed from the adsorbent 71 using hot air (air heated by the heat exchanger 9) blown by the crossflow fan 8. And humidification performance can be enhanced.

  The direction of the adsorbent 71 when the adsorbent 71 is located at the exposure position indicated by the two-dot chain line is the direction in which the outlet of the second air path 76 faces the outlet 6, so that the air is in the second air path. The moisture desorbed from the adsorption plate 72 when the air is blown 76 can be directly discharged into the room, and the room can be efficiently humidified.

  Also in the present embodiment, the intake air of the outdoor exhaust fan 10 may be indoor air instead of the outdoor air as in the second embodiment.

It is a vertical side view which shows the indoor unit of the air conditioner which concerns on the 1st Embodiment of this invention. It is the horizontal sectional view. It is a perspective view which shows an adsorbent. It is a disassembled perspective view which shows the adsorption body. It is a side view which shows the adsorption body. It is a block diagram which shows the electrical connection structure of the indoor unit of an air conditioner. It is a flowchart explaining the operation control of an air conditioner. It is a horizontal sectional view which shows the indoor unit of the air conditioner which concerns on the 2nd Embodiment of this invention. It is a vertical side view which shows the indoor unit of the air conditioner which concerns on the 3rd Embodiment of this invention. It is the horizontal sectional view. It is a perspective view which shows an adsorbent. FIG. It is a vertical side view which shows the indoor unit of the air conditioner which concerns on the 4th Embodiment of this invention. It is a perspective view which shows an adsorbent.

Explanation of symbols

  3, 3A, 3B, 3C ... indoor unit body, 4 ... suction port, 6 ... outlet, 6a ... outlet passage, 8 ... cross-flow fan, 9 ... heat exchanger, 10 ... outdoor exhaust fan, 11 ... adsorbent, 30a, 30b ... adsorption air path, 31 ... desorption air path, 33 ... wind direction plate, 51 ... adsorption body, 61 ... adsorption air path, 62 ... desorption air path, 71 ... adsorption body, 75 ... adsorption Air path, 76 ... Desorption air path

Claims (5)

An indoor unit main body installed in the room, wherein a suction port through which indoor air is sucked and a blowout port through which air sucked from the suction port blows into the room is formed below the suction port,
A cross flow fan installed in the indoor unit main body and generating a flow of air sucked from the suction port and blown out from the blowout port;
A heat exchanger that is installed in the indoor unit main body and heats the air that is sucked in from the suction port and blown out from the outlet;
It is located above the blower outlet in the blowout passage between the crossflow fan and the blower outlet, on the inner peripheral side in the flow direction of the blown air blown by the crossflow fan, and blown by the crossflow fan. An adsorbent from which moisture is desorbed by air heated by the heat exchanger;
An air conditioner indoor unit comprising: It is installed in the indoor unit body, and includes an outdoor exhaust fan that sucks air into the indoor unit body and exhausts the sucked air to the outside.
The adsorbent is formed in a long shape extending in the lateral width direction of the indoor unit main body, and a desorption air path having an inlet opening on the crossflow fan side and an outlet opening on the outlet side, and the outdoor exhaust 2. The indoor unit of an air conditioner according to claim 1, further comprising: an adsorption air path through which air blown by the air fan flows and moisture in the air is adsorbed by the adsorbent. It is installed in the indoor unit body, and includes an outdoor exhaust fan that sucks air into the indoor unit body and exhausts the sucked air to the outside.
The adsorbent is formed in a long shape extending in the width direction of the indoor unit main body,
The adsorbent has a position in the blow-out passage where an inlet of heated air blown by the cross-flow fan opens to the side of the cross-flow fan and an outlet of the heated air opens to the outlet side, A moving means is provided for moving between a position where air that is retreated from the blowout passage and blown by the outdoor exhaust fan flows and moisture in the air is adsorbed by the adsorbent. Item 1. An air conditioner indoor unit according to Item 1.   A wind direction plate is provided on the upstream side of the adsorbent along the flow direction of the air blown by the cross-flow fan and heated by the heat exchanger to guide the blown air toward the adsorbent. The indoor unit of an air conditioner according to claim 1 or 2, wherein the indoor unit is an air conditioner.   The indoor unit of an air conditioner according to claim 4, wherein means for rotating the wind direction plate is provided at a position where the flow of air to the adsorbent is interrupted except during a humidifying operation.

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