JP2005172280A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that air conditioners provided with a mechanism which enables air discharge of discharging indoor air and air supply of introducing outdoor air are inconvenient since a user must allow the air conditioners to perform air discharge operation using an operation button when the user feels the pollution of indoor air. <P>SOLUTION: An air conditioner comprises an air pollution sensor, and is configured to allow an air supply/ discharge device to perform air discharge operation when this sensor detects the pollution of air. The air conditioner is also configured to allow the supply/ discharge device to perform air supply operation for a predetermined time after the air discharge operation to introduce fresh air into a room so that the polluted air is attenuated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner capable of air supply operation and exhaust operation.

  Since the separate type air conditioner is installed by connecting the indoor and outdoor units with a connecting pipe that penetrates the wall surface, it is difficult to manage the air condition of the room where the indoor unit is installed. Therefore, an attempt has been made to attach an air purifier to the indoor unit and maintain the cleanness of the indoor air using the air blown from the indoor blower.

  Further, recently, as disclosed in Japanese Patent Laid-Open No. 2000-274727 (Patent Document 1), a ventilation path is secured using a through path for a connecting pipe that penetrates a wall surface, and outdoor air is introduced into the room. It has been proposed that an air supply / exhaust device for supplying air for exhausting air and exhausting indoor air to the outside of the room is provided in the indoor unit of the separate type air conditioner.

JP 2000-274727 A

  In the air conditioner provided with the air supply / exhaust device described in Patent Document 1, when the occupant senses air contamination, the operation means is operated to forcibly perform the exhaust operation. There was a problem that it was annoying.

  That is, when the resident feels dirt and operates the exhaust button, the degree of dirt in the room may be increased. In addition, when the exhaust button is operated when it is felt that the room has been cleaned, the room air may be sufficiently cleaned and the exhaust operation may be excessively performed. For this reason, it is conceivable that the fluctuation range of the air dirt state in the room is large. In particular, if the exhaust operation is excessive, indoor air whose temperature and humidity are air conditioned by the air conditioner is discharged to the outside of the room, which increases the load of the air conditioner and the loss of operating energy accordingly. become.

  In addition, when the exhaust operation is performed, the air in the room is exhausted, but the amount of exhausted air is supplemented from somewhere. For example, when supplemented from the adjacent room, if the air in the adjacent room is dirty, There is a problem that the air pollution in the room does not change.

  A first object of the present invention is to provide an air conditioner having an operation of automatically performing an exhaust operation.

  A second object of the present invention is to provide an air conditioner that includes an operation of automatically performing an exhaust operation and reduces the contamination of air in the room.

  A third object of the present invention is to provide an air conditioner that is equipped with an operation for automatically performing an exhaust operation and that has accelerated the cleaning of room air.

  A fourth object of the present invention is to provide an air conditioner that includes an operation that automatically performs an exhaust operation, and performs an operation that automatically performs an exhaust operation even if a user who wants to use this operation constantly does not care. There is to do.

  The first object is to provide a heat exchanger provided in the indoor unit, a fan for ventilating air through the heat exchanger, a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room. In the air conditioner provided with the above, this is achieved by including a sensor provided in the indoor unit for detecting air dirt and a function for causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor.

  The second object is to provide a heat exchanger provided in the indoor unit, a fan that ventilates air to the heat exchanger, a supply / exhaust mechanism that discharges indoor air to the outside and takes in outdoor air into the room. A sensor provided in the indoor unit for detecting dirt on the air, and a function of causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor, and then performing an air supply operation. This is achieved by providing.

  The second object is to provide a heat exchanger provided in the indoor unit, a fan that ventilates air to the heat exchanger, a supply / exhaust mechanism that discharges indoor air to the outside and takes in outdoor air into the room. A sensor provided in the indoor unit for detecting dirt on the air, and a function of causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor, and then performing an air supply operation. This is achieved by determining whether the air supply operation is possible based on the outside air temperature, the room temperature, and the outside air humidity.

  The third object is to provide a heat exchanger provided in the indoor unit, a fan for ventilating air to the heat exchanger, a filter provided upstream of the heat exchanger, and indoor air to the outdoors. In an air conditioner equipped with an air supply / exhaust mechanism that discharges air outside the room into the room, a sensor provided in the indoor unit for detecting dirt on the air, and an exhaust operation to the air supply / exhaust mechanism based on the output of the sensor And a function of operating the fan.

  The third object is to provide a heat exchanger provided in the indoor unit, a fan for ventilating air to the heat exchanger, a filter provided upstream of the heat exchanger, and indoor air to the outdoors. In an air conditioner equipped with an air supply / exhaust mechanism that discharges air outside the room into the room, a sensor provided in the indoor unit for detecting dirt on the air, and an exhaust operation to the air supply / exhaust mechanism based on the output of the sensor And the function of causing the fan to operate and then performing the air supply operation and the operation of the main fan.

  The first object is to provide a heat exchanger provided in the indoor unit, a fan for ventilating air through the heat exchanger, a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room. This is achieved by providing a monitoring operation for causing the air supply / exhaust mechanism to perform an exhaust operation and a stop operation based on dirt in the air in the room in which the indoor unit is provided during the setting period.

  The fourth object is to provide a heat exchanger provided in the indoor unit, a fan for ventilating air to the heat exchanger, a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room. And an air conditioner having various operation and stop operation means, and during the set period, the air supply and exhaust mechanism is exhausted and stopped based on the air in the room where the indoor unit is provided. This is achieved by ending the monitoring operation when the monitoring operation is not canceled and there is no driving operation or stop operation by the operating means within the set period.

  The fourth object is to provide a heat exchanger provided in the indoor unit, a fan for ventilating air to the heat exchanger, a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room. And an air conditioner having various operation and stop operation means, and during the set period, the air supply and exhaust mechanism is exhausted and stopped based on the air in the room where the indoor unit is provided. This is achieved by resetting the set period when the monitored operation is not canceled and the operation means is operated or stopped by the operating means within the set period.

  ADVANTAGE OF THE INVENTION According to this invention, the air conditioner provided with the driving | operation which performs exhaust operation | movement automatically can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, it can provide the air conditioner which is equipped with the driving | operation which performs exhaust operation | movement automatically, and reduces the dirt of the air of the room.

  ADVANTAGE OF THE INVENTION According to this invention, the operation | movement which performs exhaust operation | movement automatically can be provided, and the air conditioner which accelerated the cleaning of room air can be provided.

  According to the present invention, it is possible to provide an air conditioner that includes an operation that automatically performs an exhaust operation and performs an operation that automatically performs an exhaust operation even if a user who wants to use this operation constantly does not care. it can.

  The present embodiment relates to an air conditioner capable of air supply operation and exhaust operation.

  Hereinafter, each embodiment of the air conditioner of the present application will be described with reference to the drawings.

  The whole structure of an air conditioner is demonstrated using FIGS. 1 is an external view of an indoor unit of an air conditioner according to the present invention, FIG. 2 is an external view of the indoor unit of FIG. 1 with a decorative cover removed, FIG. 3 is a cross-sectional view taken along the line AA in FIG. It is BB sectional drawing of FIG.

  The indoor unit 1 includes a unit box 2, a decorative cover 3, and a front cover 4. The indoor unit 1 is provided with an air inlet 5 for sucking indoor air whose temperature and humidity are harmonized and an air outlet 6 which blows indoor air whose temperature and humidity are harmonized. The air outlet 6 is provided horizontally in the lower part of the indoor unit 1, and constitutes a main outlet with respect to the sub outlet 13. At the air outlet 6, an up / down wind direction plate 7 is rotatably installed. This up-and-down air direction board 7 is for changing the direction of the blown-out air, and is located so that it may blow off in the horizontal direction during cooling, and it may be blown down during heating.

  The unit box 2 includes an air filter 8, a main fan 9, a heat exchanger 10, and a dew tray 11. The air filter 8 is disposed so as to cover the suction side of the heat exchanger 10 and removes dust contained in the sucked indoor air. The main fan 9 is composed of a horizontally long cross-flow fan, and is arranged at the center in the indoor unit 1 so as to suck indoor air from the air inlet 5 and blow it out from the air outlet 6. The heat exchanger 10 is disposed on the suction side of the main fan 9 and has a substantially inverted V shape. The dew receiver 11 is disposed below the lower ends of the front and rear sides of the heat exchanger 10 and is provided for receiving condensed water generated in the heat exchanger 10 during cooling operation or dehumidifying operation and discharging it outside the room. As a result, a main passage through which indoor air to be air-conditioned flows is formed. That is, by operating the main fan 9, room air is sucked from the air suction port 5, heat exchanged by the heat exchanger 10 through the air filter 8, and then blown into the room from the air outlet 6. . Although not shown, an air cleaning filter is disposed between the air filter 8 and the heat exchanger to adsorb volatile organic solvents, adsorb fine dust or cigarette smoke, etc. Can be cleaned. Of course, during the cooling, heating, and dehumidifying operations, only the main fan 9 that is an indoor fan is operated, so that the air purifying function is exhibited.

  The sub fan unit 15 is disposed on one side of the indoor unit 1. Specifically, the sub fan unit 15 is incorporated on the side opposite to the main fan motor 14 for the main fan 9.

  The sub fan unit 15 has a sub suction port 16 for sucking room air at the front. The sub suction port 16 is located behind the air filter 8 shared with the heat exchanger 10, and indoor air sucked from the air suction port 5 is sucked through the air filter 8. That is, the number of components can be reduced by sharing the air intake port 5 for taking in indoor air into the heat exchanger 10 without providing a dedicated air intake port in the indoor unit 1 for the sub fan unit 15.

  A blower duct 12 is communicated with the sub fan unit 15, and a sub blower outlet 13 is provided in the blower duct 12. Specifically, the air duct 12 is positioned above the air outlet 6 and in front of the dew receiver 11, and extends laterally to the central portion in the indoor unit 1. A sub air outlet 13 is provided at the tip of the air duct 12, in other words, at the upper center of the air air outlet 6. Thereby, the air blown into the room from the sub fan unit 15 is blown from the indoor blowing unit 17 to the blower duct 12 and blown into the room from the sub blower outlet 13 located at the tip of the blower duct 12.

  The sub fan unit 15 has an air supply / exhaust port 18 at the rear for exhausting indoor air to the outside and taking in fresh outdoor air. An outdoor duct 22 (not shown) is connected to the air supply / exhaust port 18, and the outdoor duct 22 is connected to a refrigerant pipe connecting the indoor unit 1 and the outdoor unit (not shown) via a piping hole in the house. The outside duct 22 is opened to the outside, and the refrigerant pipe is connected to the outdoor unit.

  In the present embodiment, the main fan motor 14 is arranged on the right side of the indoor unit 1 and the sub fan unit 15 is arranged on the left side. However, the same effect can be obtained even if they are arranged in reverse. Moreover, although the right-and-left object property which looked at the indoor unit 1 from the front collapses, you may arrange | position the sub fan unit 15 in the side by which the main fan motor 14 is arrange | positioned.

  Next, the configuration and function of the sub fan unit 15 will be described with reference to FIGS. 5 is an external view of the sub fan unit, FIG. 6 is a perspective view in which the right side plate of the sub fan unit in FIG. 5 is omitted, and FIG. 7 is a perspective view in which a part of the left side plate of the sub fan unit in FIG. .

  The sub fan unit 15 has an air blower portion in the upper half of the internal space, and various filters are arranged in the lower half portion. The width of the indoor unit 1 is reduced by arranging them in the vertical direction. The sub fan unit 15 is configured to be housed in the indoor unit 1 without widening.

  The sub fan 19 is constituted by a centrifugal fan such as a sirocco fan or a turbo fan, and no reverse wind is generated even when the sub fan 19 rotates in the reverse direction. Even in a narrow air passage, a higher air flow can be obtained than an axial fan.

  The blower unit located in the upper half of the sub fan unit 15 includes a sub fan 19, a sub fan motor 20 that drives the sub fan 19, a suction side casing 15a that forms an air suction side air passage of the sub fan 19, and a sub fan. 19 is formed on the blowout side casing 15b in which the sub-fan 19 and the subfan motor 20 are housed, the mouth ring 27 that partitions the suction-side casing 15b and the blow-out side casing 15b, and the suction-side casing 15a. A damper I29 located on the suction side, a sub suction port 16 through which room air is sucked, and an air supply / intake port 24a communicated with the air supply / exhaust port 18 are provided. By the operation of the damper I29, one of the sub suction port 16 and the supply air suction port 24a is opened and the other is closed.

  In addition, the sub fan 19 and the sub fan motor 20 are housed in the blowout side casing 15 b, and the air flow from the suction side casing 15 a to the blowout side casing 15 b is performed via the sub fan 19. The sub fan 19 is a centrifugal fan that sucks air from the axial direction that is the longitudinal direction of the indoor unit 1 and blows it out in the circumferential direction. Unlike the propeller fan that blows out the sucked air in the fan axial direction, the centrifugal fan blows out the sucked air in the circumferential direction, so that the width dimension of the sub fan unit 15 in the fan axial direction can be reduced. The sub fan motor 20 is incorporated in the recess of the sub fan 19 so that the width of the sub fan unit 15 is reduced. By operating the damper I29 provided in the suction side casing 15a, the sub suction port 16 or the air supply suction port 24a opened in the room is opened, and the other is shut off.

  The lower half of the sub fan unit 15 has a fine air supply filter 21 used in an air purifier that removes substances harmful to the human body as well as dust contained in the air, and a pre-filter that removes dust in the air. The filter 33, the indoor outlet 17 for guiding air to the sub outlet 13, the air supply / exhaust port 18 for exhausting dirty indoor air to the outside or taking fresh outdoor air into the room, and the air blown from the sub fan 19 to the room An air supply circulation air passage 26 to be guided and a damper II 31 for switching the air passage and controlling the flow of air are provided. Similar to the upper half, the lower half of the sub fan unit 15 is partitioned into left and right spaces in the height direction when viewed from the front. This is done via the air passage 23. By operating the damper II 31, the air flow path is switched, the exhaust air path 23 is opened, the air supply circulation air path 26 is shut off, and the air blown from the sub fan 19 is communicated with the air supply / exhaust port 18. Alternatively, the exhaust air passage 23 is shut off, the air supply circulation air passage 26 is opened, and an air passage communicating with the indoor blowing portion 17 is formed.

  The feeder filter 21 is composed of a filtration part having an eye for filtering dust and the like of 0.5 to 1.0 μm and an adsorption part (specifically activated carbon) for adsorbing odor. In order to increase the filter area and reduce ventilation resistance, a sheet-like filter is formed by being folded (folded). The air supply filter 21 has a capability of filtering organic particles such as fine particles, tobacco smoke, and toluene contained in exhaust gas from a diesel vehicle.

  In the present embodiment, when the outdoor air is taken into the room, it is taken into the room through the air supply filter 21. In recent years, outdoor air tends to be polluted in urban areas, and various pollutants are floating in the air. Even in the suburbs, there are factors that pollute the atmosphere, for example, there are floating organic solvents that have been vaporized in the vicinity of exterior wall painting work, and bonfire smoke is floating. In this environment, when outside air is introduced, these pollutants enter the room and become uncomfortable for residents.

  Therefore, in the air conditioner according to the present embodiment, the air supply operation is selected manually or automatically, and when the outdoor air is introduced by operating the sub fan unit 15 (ventilation unit), the air supply filter 21 is installed. Through the filter, substances that can be removed within the range of the capacity of the filter are removed and supplied to the room.

  Thereby, when the outdoor air is contaminated by the causative substance, the outdoor air can be taken into the indoors as clean air, so that discomfort associated with the introduction of outside air can be reduced.

  As will be described later, as the operation of the sub fan unit 21, there are an air supply operation for introducing outside air, an exhaust operation for discharging indoor air to the outside, and a circulation operation for sucking indoor air and returning it to the room. However, in the exhaust operation and the circulation operation, exhaust or circulation is performed without passing through the air supply filter 21.

  Further, if the air supply filter 21 has such a performance as to capture a virus having a size of 0.3 to 3 μm, it is possible to prevent the entry of a virus from the outside.

  As shown in FIG. 6, the sub fan unit 15 includes, from above, a sub fan 19 disposed so that the rotation axis thereof is substantially parallel to the axis of the main fan 9, and a ventilation that communicates with one surface of the sub fan unit 15. The prefilter 33 facing the road, the ventilation surface faces in the same direction as the air suction surface of the sub fan 19, in other words, the perpendicular of the ventilation surface when the pleats are removed becomes substantially parallel to the drive axis of the sub fan 19. The air supply filter 21 arranged as described above is accommodated. In this way, in particular, the sub fan unit 15 and the air supply filter 21 are arranged, whereby the width of the sub fan unit 15 can be reduced, and the sub fan unit 15 can be reduced without increasing the width of the indoor unit 1. Can be stored in the indoor unit 1. The ventilation surface of the sub fan 19 and the ventilation surface of the air supply filter 21 are not perpendicular to each other. Desirably, the thickness can be reduced by making the perpendiculars of both surfaces parallel.

  Further, the pre-filter 33 is a thing for removing large dust mainly entering with air from the outside at the time of air supply. . Therefore, in this embodiment, as shown in FIG. 6, the side wall surface communicates with the air supply / exhaust port 18 from the air supply / exhaust port 18 opened on the back to the front, and the side wall surface closes the suction side casing 15 a (see FIG. 5). Formed on the suction side casing lid 15 </ b> C), the upper wall surface is formed by the air supply / exhaust air passage top plate 25 a extending from the upper end surface of the air supply / exhaust port 18 to the front side, and the lower surface is formed on the suction side surface of the air supply filter 21. An air supply / exhaust air passage 25 which is a space formed by a pre-filter 33 mounted between the space and the space on the air supply / exhaust air passage top plate 21a side is provided. Thereby, the area of the pre-filter 33 can be enlarged and the period until the pre-filter 33 is clogged is extended. Further, in order to increase the area of the pre-filter 33 and widen the area of the air supply filter 21, the air supply / exhaust port 18, which is an outdoor opening, is projected in the vertical direction of the air supply / exhaust filter 21 (housing part) when viewed from the front. A part or the whole of the air supply / exhaust air passage 25 is formed between the sub fan 19 and the air supply filter 21. By arranging the air supply / exhaust port 18 on the back surface of the storage portion of the air supply filter 21 as described above, the cleaning property is improved as described later. That is, the air supply / exhaust air passage 25 is curved downward as it goes from the front end face to the back air supply / exhaust port 18. Thereby, in addition to the above-described effects, the opening area of the air supply / exhaust port 18 can be increased. The front end face of the air supply / exhaust air passage is closed at one end of a pre-filter 33 that is elongated on the back surface, and an air supply / exhaust air passage lid 33b having a handle 33a attached to the front surface.

  The air supply filter 21 and the pre-filter 33 are inserted in the depth direction from the front side of the indoor unit 1 when inserted into the sub fan unit 15. The air supply filter 21 is inserted upright, and the pre-filter 33 is inserted sideways by being guided by a guide (not shown) and locked by the fitting portion 18a. By arranging the filters side by side in the vertical direction, the axial dimension of the sub fan 19 can be reduced. In addition, the air supply filter 21 and the pre-filter 33 both have handles 21a and 33a located on the front side of the sub fan unit 15. If necessary, the front cover 4 of the indoor unit 1 is opened, and the handles 21a and 33a can be pulled out and attached. The pre-filter 33 has flexibility and is arranged so as to block between the air supply / exhaust port 18 and the air supply filter 21 from the front of the sub fan unit 15 to the depth direction. It is fitted to the part 18a.

  In the present embodiment, the air supply filter 21 is employed not only to remove dust in the air but also to remove components harmful to the human body. A finer filter may be employed to remove only dust in the air.

  Next, the air supply operation, the exhaust operation, and the circulation operation by the sub fan unit 15 will be described with reference to FIGS. FIG. 8 is a diagram schematically showing the air flow of the sub fan unit shown in FIG. 2, and FIG. 9 is a diagram showing the operating state of the sub fan unit shown in FIG.

  The sub fan unit 15 has three operation modes and an operation stop state, which are an air supply operation, an exhaust operation, and a circulation operation. The wind flow direction and the damper open / close position in each operation mode are as shown in FIG. It should be noted that, as a matter of course, the wind does not flow when the operation is stopped, and the damper I29 and the damper II31 are in the position (b), respectively, and the outdoor air is supplied from the supply / exhaust port 18 to the sub suction port 16 and the indoor outlet 17. Preventing entry into the room. Further, although not specifically described, switching between the respective operation modes is performed by the operation unit of the remote control switch or by the operation unit of the indoor unit 1 in the case of manual operation. Moreover, in the case of automatic, it is performed by a command from a control unit (not shown). The sub fan unit 15 can be operated in combination with the air conditioning operation of the indoor unit 1 or can be operated alone. Furthermore, a timer can be provided in the sub fan unit 15 so that the operation can be automatically stopped after a certain period of operation.

  As shown in FIG. 8, the sub fan 19 used in the sub fan unit 15 rotates in a certain direction and causes air to flow in the direction of the arrow, so that the suction side casing 15a, the blowout side casing 15b, the mouth ring 27 are moved. The shape may be a shape that considers only the air flow in one direction. For this reason, while the ventilation efficiency of the subfan 19 can be improved, the driving noise of the subfan 19 can be reduced.

  By operating the damper I29, it is switched to either the air path that sucks in indoor air from the sub suction port 16 or the air path that opens the air supply air path 24 and sucks outdoor air from the air supply / exhaust port 18; By operating, the operation mode of the sub fan unit 15 is switched to the air supply operation by switching to either the air passage for blowing air from the sub air outlet 17 into the room or the air passage for exhausting air from the air supply / exhaust port 18 to the outside. Switching to either the exhaust operation mode or the circulation operation mode.

  That is, in the air supply operation, the damper I29 is on the (b) side, shields the sub-suction port 16 and opens the air supply air passage 24, so that outdoor air is sucked through the air supply air passage 24, and the damper II 31 is (a) Since the air supply circulation air passage 26 is opened and the exhaust air passage 23 is shielded, the outdoor air blown out to the sub fan blow-out portion 34 is blown into the air supply circulation air passage 26 and passes through the indoor blow-out portion 17. Then, the air is blown to the air duct 12 connected to the indoor outlet 17. In the case of this embodiment, the outdoor air sucked by the sub fan 19 is sucked from the air supply / exhaust port 18 through the air supply / exhaust air passage 25, and the dust contained in the air is removed on the surface of the pre-filter 33. After that, substances harmful to the human body are removed together with dust contained in the air on the surface of the air supply filter 21, passed through the air supply filter 21, and guided to the air supply air passage 24. 19 will be sucked into.

  Further, in the exhaust operation, the damper I29 is on the (a) side and opens the sub suction port 16 and shields the air supply air passage 24, so that the room air is sucked through the sub suction port 16, but the damper II 31 has (b) Therefore, the air supply circulation air passage 26 is shielded and the exhaust air passage 23 is opened. As a result, the room air blown to the sub fan blower 34 flows into the exhaust air passage 23 and is exhausted from the air supply / exhaust port 18 to the outside through the prefilter 33.

  Further, in the circulating operation, the damper I29 is on the (a) side and opens the sub suction port 16 to shield the air supply air passage 24, so that the indoor air is sucked through the sub suction port 16 and the damper II 31 is moved to (a). Since the air supply circulation air passage 26 is open and the exhaust air passage 23 is shielded, the room air blown to the sub-fan blowing section 34 is blown to the air supply circulation air path 26, The air is sent to the air duct 12 connected to the indoor outlet 17 through the air.

  When the operation is stopped, both the damper I29 and the damper II31 are on the (b) side and prevent the outdoor air from entering the room through the supply air passage 24 or the exhaust air passage 23. Therefore, it is not necessary to provide a back wind prevention valve for preventing outdoor air from entering through the air supply / exhaust air passage when the operation is stopped.

  Next, details of the air supply operation will be described with reference mainly to FIG.

  In the air supply operation, the damper I29 shields the sub suction port 16 and opens the air supply suction port 24a, and the damper II 31 in the sub fan outlet 34 opens the air supply circulation air passage 26 and exhaust air passage. 23 is shielded, the air supply air passage 24 and the air supply / exhaust air passage 25 communicate with each other via the air supply filter 21. Accordingly, when the sub fan 19 is driven in this state, outdoor air is sucked from the air supply / exhaust port 18 through the air supply / exhaust air passage 25, and the sucked outdoor air passes through the pre-filter 33 and the air supply filter 21. And flows to the supply air passage 24. At this time, dust contained in the air is removed when passing through the pre-filter 33, and further, substances harmful to the human body are removed together with dust contained in the air when passing through the air supply filter 21. Will be.

  The outdoor air sucked into the supply air passage 24 enters the suction side casing 15a from the supply air suction port 24a, is sucked into the sub fan 19 from the mouth ring 27, and blown out to the blowout side casing 15b. 34 and flows into the air supply circulation air passage 26. The outdoor air that has flowed into the supply air circulation passage 26 flows into the air duct 12 from the indoor blowout portion 17, and the temperature of the air is changed to the temperature of the operating state of the indoor unit 1 while flowing through the air duct 12. It is conditioned and supplied to the room as fresh outdoor air having a conditioned temperature from the sub outlet, and the room air is refreshed.

  Next, details of the exhaust operation will be described with reference mainly to FIG.

  The room air during the exhaust operation is sucked into the sub suction port 16 after dust in the air is removed by the room air filter 8 (see FIG. 3). The damper I29 is located at the same position as that in the circulation operation, and opens the sub suction port 16 to block the supply air suction port 24a. Therefore, the indoor air is sucked in from the sub suction port 16, enters the suction side casing 15 a, is sucked into the sub fan 19, is blown out from around the sub fan 19, is collected by the blowout side casing 15 b, and is blown out to the sub fan blowing portion 34. Will be.

  In the exhaust operation, the damper II 31 in the sub fan blowing section 34 opens the exhaust air passage 23 and blocks the supply air circulation air passage 26, so that the room air blown out to the sub fan blowing section 34 is exhausted. The air flows through the air passage 23 to the air supply / exhaust air passage 25 and is discharged from the air supply / exhaust port 18 to the outside through the prefilter 33. Here, dust removed from the outdoor air during the air supply operation is accumulated on the air supply / exhaust port 18 side of the prefilter 33, but the indoor air during the exhaust operation flows through the prefilter 33. Dust accumulated on the surface of the pre-filter 33 on the air supply / exhaust port 8 side is effectively removed. Accordingly, the sub fan unit 15 repeats the air supply operation and the exhaust operation, thereby self-cleaning the prefilter 33, and the number of cleaning of the prefilter 33 can be reduced. Further, by automatically switching to the exhaust operation for a certain time during the air supply operation, the direction of the air flow flowing through the pre-filter 33 can be switched to prevent clogging.

  Further, during the exhaust operation, the indoor air to be exhausted does not pass through the air supply filter 21, so the ventilation resistance during the exhaust operation is reduced, the amount of indoor air to be exhausted can be increased, and an efficient exhaust operation is possible. It becomes.

  The air supply operation and the exhaust operation have been described above. However, if only the air supply and exhaust operations are basically performed, the sub-fan can be a forward / reverse fan, and one outdoor opening and one indoor opening can be provided. For example, it is necessary to consider a method for preventing the air supply filter 21 from passing when exhausting, but the structure is simple. However, in addition to this, by providing another indoor opening, one dedicated to the intake of indoor air and the other dedicated to the blowout, the circulation operation described below can be performed, and various applications are possible. It spreads.

  Next, details of the circulating operation will be described with reference mainly to FIG.

  The room air during the circulation operation is sucked from the sub suction port 16 (see FIG. 4). Although omitted in FIG. 12, an indoor air filter 8 (see FIG. 3) that removes dust from indoor air during the cooling and heating operation is extended to the front portion of the sub fan unit 15 (see FIG. 4). Since it is provided, the indoor air filter 8 removes dust contained in the air from the indoor air sucked by the sub suction port 16.

  During the circulation operation, the damper I29 opens the sub suction port 16 and shuts off the air supply suction port 24a, so that the indoor air is sucked from the sub suction port 16, enters the suction side casing 15a, and passes through the mouth ring 27. Then, the air is sucked into the sub fan 19 and blown out from the periphery of the sub fan 19, collected by the blow-out side casing 15 b, and blown out to the sub fan blow-out portion 34. The exhaust air passage 23 is shut off by the damper II 31 provided in the sub-fan outlet 34 and the air supply circulation air passage 26 is opened. As a result, the room air blown to the sub-fan blowing section 34 flows into the supply air circulation air passage 26 and is blown out from the indoor blowing section 17 into the room.

  12 (a) does not clearly show the air duct 12, but the air duct 12 is connected with the air outlet 12a in contact with the indoor air outlet 17 as shown in FIG. The air blown out from the air 17 is blown into the air duct 12 as it is. The air duct 12 is disposed on the front surface of the dew receiver 11 (see FIG. 3), and the front end of the air duct 12 is located at the approximate center upper portion of the air outlet 6 (see FIG. 1) of the indoor unit 1, The room air blown to the duct 12 is blown out from the sub outlet 13 (see FIG. 2). Since the air duct 12 is provided in the front part of the dew receiver 11, the dew receiver 11 is cooled and cooled in the cooling operation, and is heated and heated in the heating operation. The air flowing in the air duct 12 is also precooled or preheated to the respective states depending on the respective operation states, and is blown out into the room from the sub outlet 13. Therefore, even when the sub fan unit 15 is operated in the circulation operation mode, the air volume during the cooling operation or the heating operation is increased, and the air preliminarily cooled or preheated to the temperature of each operation state is supplied from the sub air outlet 13. Since it blows out, the cooling capability or heating capability at the time of each driving | operation can be improved.

  As described above, since the sub fan 19 of the sub fan unit 15 of the present invention rotates in a certain direction, the shape of the mouth ring 27, the shape of the suction side casing 15a and the shape of the blowout side casing 15b are changed to the sub fan 19. It is possible to adopt an appropriate and reasonable shape, and thus it is possible to obtain the sub fan unit 15 having good blowing efficiency and low operation noise. Further, a sub fan motor 20 for driving the sub fan 19 is disposed in a recess provided in the sub fan 19, and is on the same plane surrounding the blowout side casing 15b of the subfan 19 (that is, outside the outer peripheral surface of the blowout side casing 15b). On the other hand, an exhaust air passage 23, an air supply air passage 24, and an air supply circulation air passage 26 are provided to construct a blower mechanism having a small width. Further, the air supply filter 21 is disposed at the lower part of the air blowing mechanism to reduce the width of the sub fan unit 15 so that the sub fan unit 15 can be accommodated in the indoor unit 1 without increasing the width of the indoor unit. ing.

  Next, the effect when the cooling / heating operation of the indoor unit 1 and the operation mode of the sub fan unit 15 are combined will be described with reference to FIGS. 13 and 14. 13 is an explanatory diagram when the cooling operation of the indoor unit of FIG. 1 is combined with the circulation operation or the air supply operation of the sub fan unit, and FIG. 14 is the heating operation of the indoor unit and the circulation operation or the supply of the sub fan unit of FIG. It is explanatory drawing at the time of using together driving.

  In FIG. 13, when the indoor unit 1 is cooled and the sub fan unit 15 is circulated or supplied, the air blown out from the sub air outlet 13 flows through the air duct 12. Since it is cooled and cooled, it is cooled by the air duct 12. Then, the air cooled by the air duct 12 is blown out almost horizontally as indicated by an arrow A from the sub air outlet 13 provided at the substantially upper center of the air outlet 6 of the indoor unit 1. On the other hand, in the cooling operation of the indoor unit 1, the cooled cold air is blown out from the air outlet 6 as indicated by the arrow B, and the whole room is cooled by blowing cool air far away from the room.

  In FIG. 13, since the cooling air of the cooling operation is added with the cooling operation of the sub fan unit 15 or the air supply operation, the amount of the cooling air is increased and the room can be quickly cooled. Or the noise at the time of air_conditionaing | cooling operation can be made low by making the air_conditioning | cooling capacity the same and reducing the air volume of air_conditionaing | cooling operation by the air volume which the sub fan unit 15 blows. In addition, since the air is blown out almost horizontally from the sub air outlet 13, the indoor upper space is covered, so that the cool air blown out from the air air outlet 6 can be effectively used in the living space in the lower part of the room. become able to.

  In FIG. 14, when the indoor unit 1 is operated for heating and the sub fan unit 15 is circulated or supplied, the air blown from the sub air outlet 13 flows through the air duct 12 while the air duct 12 Since it is heated by the dew tray 11 and warmed, it is heated by the air duct 12. Then, the air heated by the air duct 12 is blown out almost horizontally as indicated by an arrow A from the sub air outlet 13 provided at the substantially upper center of the air outlet 6 of the indoor unit 1.

  On the other hand, the warm air that is heated by the heating operation of the indoor unit 1 and becomes warm and blown out from the air outlet 6 tends to constantly rise toward the upper part of the room because the specific gravity is light. . Therefore, the warm air of the heating operation blows downward from the air outlet 6 as indicated by the arrow B, and first warms the floor of the room and suppresses the warm air from rising toward the upper part of the room. The space will be heated. In the conventional case where there is no hot air blown out from the sub blower outlet 13, the hot air blown out from the air blower outlet 6 starts to rise as indicated by the arrow B as the speed of the hot air slows down to the far side of the room. The warm warm air could not be reached, and light and warm air was retained in the upper space of the room.

  However, in the indoor unit 1 of the present embodiment, the warm air is blown out almost horizontally as indicated by the arrow A from the sub air outlet 13 provided substantially at the upper center of the air outlet 6, so The warm air of the warm heating operation is covered, and the warm air of the heating operation is guided to the distant place of the room by the warm air blown from the sub blower outlet 13. Therefore, even in the heating operation of the indoor unit 1, a more effective heating operation can be performed by using the circulation operation or the air supply operation of the sub fan unit 15 together.

  As described above, the air duct 12 is provided on the front surface of the dew receiver 11, and therefore, when the heat exchanger 10 of the indoor unit 1 is cooled in the cooling operation, it receives the condensed cold drain water. The dew receiver 11 is cooled, and the air duct 12 provided on the front surface of the dew receiver 11 is cooled and cooled by the dew receiver 11 to cool the air flowing therethrough. Therefore, even if hot outdoor air is supplied indoors during the cooling operation, the air is preliminarily cooled by the air duct 12 and blown out into the room, so that the cooling effect is not greatly impaired.

  Further, when the heat exchanger 10 of the indoor unit 1 is heated by heating operation, the dew receiver 11 is directly heated and warmed, and the air duct 12 provided on the front surface thereof is heated by the dew receiver 11, The air flowing through it will be warmed. Therefore, even if cold outdoor air is supplied to the room during the heating operation, it is preheated by the air duct 12 and blown into the room, so that the heating effect is not greatly impaired.

  In addition, without performing the cooling / heating operation of the indoor unit 1, only the sub fan unit 15 performs the circulation operation, the exhaust operation or the air supply operation alone to circulate the indoor air gently or to discharge the dirty air in the room. Or fresh air outside can be taken in and indoor air can be refreshed.

  A description will be given of the control for realizing the air watching operation control using the air conditioner capable of supplying and exhausting air as described above. In FIG. 15, 100 is an air conditioner control device, 200 is an operating means, 250, 300, 400, and 500 are air dirt sensors, indoor temperature, humidity, and outdoor temperature sensors, respectively, and 600 is an air conditioner actuator ( A compressor, an indoor fan, an outdoor fan, various valves, and various throttle devices) and 700 are actuators (sub-fan 19, dampers 29, 31) of the air supply / exhaust device. The air conditioner control device 100 includes an operation signal receiving means 4000, an air conditioner control means 102, an air lookout control means 5000, and an air supply / exhaust device control means 104.

  The control device 100 of the air conditioner receives an operation signal such as a button disposed on the operation unit 200 such as a remote controller by the operation signal receiving unit 4000 and instructs the air conditioner control unit 102. The air conditioner control means 102 acquires the measured values of the indoor temperature sensor 300, the indoor humidity sensor 400, and the outdoor temperature sensor 500 by sensor data acquisition means (not shown), so that the air conditioner performs a specified operation. The actuator 600 of the machine is driven and controlled.

  When the air watch button 220 of the operation means 200 is pressed, the operation signal receiving means 4000 receives this and instructs the air watch control means 5000. The air look-out control unit 5000 acquires measured values of the air dirt sensor 250, the indoor temperature sensor 300, the indoor humidity sensor 400, and the outdoor temperature sensor 500 by a sensor data acquisition unit (not shown), and based on the measured values, the air conditioner Is commanded to the air conditioner control means 102 and the air supply / exhaust device control means 104 so as to operate in the scheduled operation mode. Application to control of various measurement values will be described later.

  The air conditioner control means 102 drives and controls the actuator 600 of the air conditioner. Here, the actuator 600 of the air conditioner includes a compressor, an indoor / outdoor blower, an electric expansion valve for pressure reduction control, a four-way valve for switching a refrigerant flow path, various valves for switching a refrigerant circuit, and the like.

  The air watch operation (monitoring operation) in this embodiment will be briefly described. First, the case where the air watch button 220 is pressed while the air conditioner is stopped and the air watch operation is started will be described. The air contamination sensor 250 provided in front of the indoor unit 1 monitors the air contamination level. When the indoor air contamination level exceeds a threshold value, the ventilation path of the sub fan unit 15 is set to the exhaust mode to rotate the sub fan 19. In addition to driving, in order to further increase the effect of the air cleaning function, the main fan 9 is driven to rotate and the air cleaning filter attached in front of the heat exchanger is utilized. That is, the room air is exhausted and the room air is circulated so that the air purifying filter collects the source of the dirt, thereby cleaning the room air more quickly. Further, when cooling, heating, and dehumidifying operations are performed, the exhaust operation is performed when air dirt is detected, and the main fan 9 that is an indoor fan is left to control the cooling, heating, and dehumidifying operations. In order to make the air purifier filter work, the indoor fan 9 is operated at a predetermined speed even if the operation of the indoor blower is not necessary for air conditioner control, but the indoor fan 9 is not necessarily operated. . However, in this case, it takes a little time for the indoor air to become normal.

  The air supply / exhaust device control means 104 drives and controls the actuator 700 of the air supply / exhaust device. Here, the actuator of the air supply / exhaust device includes a blower for supply / exhaust, a damper for switching the ventilation path, and the like.

  FIG. 16 shows an example of the operation means 200 according to the present embodiment. Reference numeral 201 denotes a display unit that uses liquid crystal or the like, and displays various operation statuses and operation statuses of the air conditioner. The buttons marked with a circle in the figure are various operation buttons. Display “Cooling”, “Heating”, “Blower”, “Dehumidifying”, etc. Various operating modes provided can be switched. The designated operation mode is displayed on the liquid crystal display unit 201 as “cooling”, for example. Then, the operation / stop can be instructed by pressing the “operation / stop” button.

  In particular, the button 220 is labeled “air lookout”. The operation is started by pressing the button 220. At this time, for example, “air watch” is displayed on the liquid crystal display unit 201, and it is displayed that the “air watch” button has been pressed.

  Although not shown in the figure, the operation result is received by the control device 100 of the air conditioner by using a light emitting element such as an LED on the front of the indoor unit, for example, by turning on an orange lamp. You can check it. As a result of the control, the “supply / exhaust” lamp is turned on during the exhaust operation, and the “supply” lamp is turned on during the supply operation.

  The set time for the air guard operation is 2 weeks from the state where there is no remote control operation. When two weeks have elapsed, the “air guard” display lamp of the indoor unit 1 is turned off and the process ends. Further, the air watching operation is continued even when an “operation / stop” button for starting and stopping the cooling, heating, air blowing, and dehumidifying operation is operated. In order to cancel this, the “air watch” button is pressed again to cancel the “air watch” on the remote control display.

  In addition, if the cooling, heating, air blowing, dehumidifying operation, or the like is operated in a state where the air watching operation is set, the air watching operation timer is reset, and a time of two weeks is set from that point. This is to eliminate the annoyance of a user who is always aware of the dirt in the room and setting the air watch operation again after two weeks.

  In addition, although the set time of the air watch operation is set to 2 weeks, it is not necessary to stick to 2 weeks if it is a time required for the function of air watch. For example, there is no problem even for 10 days for one week.

  Next, an embodiment relating to a method of resetting the timer of the air watching operation will be described. The operation means 200 stores all set information, and all the information is transmitted to the main body at the time of transmission. Therefore, even when any button is pressed, not only the information but all the states are stored, and all the information is transmitted to the control device 100 of the air conditioner. Therefore, the control device 100 for the air conditioner acquires not only the information of the button that is newly pressed from the received data of the operation means, but also all previous operation states at once. Since the air watching operation is not operated by the “operation / stop” button, when it is set by the one-end operation means 200, it is stored in the operation means 200 until it is canceled by a button other than the “operation / stop” button. When the air conditioning operation such as the above is instructed, the air watch operation information is transmitted together with the operation information. Even when the stop of the air-conditioning operation is instructed, not only the stop flag but also the various settings stored in the remote controller that is the operation means 200 are transmitted, so the air watching operation flag is also transmitted. For this reason, the air conditioner control device 100 sets a two-week timer on the assumption that a new air monitoring operation has been accepted, and is apparently updated each time an operation such as cooling or heating is performed. . That is, every time the remote controller is operated, the air watch operation for two weeks from that point is set.

  FIG. 17 shows an operation time chart during the air guard operation performed by the control device of the air conditioner 100. The horizontal axis shows the progress of time. The air guard operation is indicated by 1000 in the air guard operation mode column in the figure. The air watch operation starts when the button 220 is pressed, and the air watch operation ends when the duration indicated by Tmax in the figure (= a value of 1 week or more is set, 2 weeks in this embodiment) elapses. .

  First, when the button 220 is pressed, energization of the air contamination sensor is started. The energization period is the same as Tmax. As shown in the first broken line portion of the air pollution level change column in the figure, immediately after the start of energization, the level of contamination cannot be detected from the characteristics of the air contamination sensor. The period indicated by 2500 in the figure after the time TCmin (= about 5 minutes) has elapsed after the start of energization is the air watch period.

  This air dirt sensor is a sensor for detecting cigarette smoke, alcohol, spray (insecticide, etc.). Although the detailed operation principle of this sensor is not described in detail, for example, one kind of gas sensor described in JP2003-232760A, JP2001-356105A, JP2001-174426A, or the like is used. .

  When the air-conditioning operation such as cooling or heating is not performed in the portion indicated by 2101 in the indoor air blowing column, the indoor fan is stopped. However, when the air conditioning operation is performed, the indoor fan is rotationally driven according to the control. Reference numerals 2100 and 2200 are areas where the indoor fan is operated in response to a control request for the air guard operation when the air conditioning operation is not performed. When the air-conditioning operation is performed and the indoor fan is driven, the air blowing is continued.

  The detection of the air contamination degree C is always performed at a sampling period which is a section 2500 in FIG. CH is an upper limit, and CL is a lower limit. When C ≧ CH is first detected, the exhaust operation indicated by 1100 is started. The minimum operation time for exhaust and air blowing operation is Thmin (= about 20 minutes). This is a time determined so as not to repeatedly start and stop the exhaust operation, and is determined in advance by the exhaust amount. When C ≦ CL is detected after the lapse of Thmin for the first time in this operation, exhaust is stopped as indicated by the end of 1100 and 2100. Then, the air supply operation is started while the indoor fan 9 is operated (1110), and this is continued for Ts time. Thereafter, when the air pollution level increases, the exhaust operation shown at 1200 is performed, and then the air supply operation shown at 1210 is performed, and the same operation is repeated for Tmax in the section shown at 1000.

  In this way, when air contamination is detected, the exhaust operation is automatically and automatically performed, the indoor air contamination state is kept below a certain range, and a stable clean indoor air state is maintained. It is what you want to do. Further, the exhaust operation is stopped when it is detected that the air is no longer contaminated, and the result of indoor air conditioning is reduced to be discharged outside the room, thereby reducing the loss of operation energy.

  The reason why the air supply operation is performed after the exhaust operation is completed will be described. The exhaust operation is an operation in which indoor air is discharged to the outside of the room, but the same amount of air as the discharged air should be supplied from, for example, the adjacent room. However, if the air in the adjacent room is dirty for some reason, even if the level of the contamination is lower than CL, the dirty air is introduced, so that discomfort remains. Therefore, the fresh outside air purified by the air supply filter 21 is supplied to the room for a certain period of time, and is diluted to remove the discomfort, and in combination with the exhaust operation, the indoor air is breathed to provide a refreshing air quality. It is what.

  By the way, after the exhaust operation, the air supply operation is not always performed, but only when the measured values of the outdoor temperature To, the indoor temperature Ti, and the humidity Hi satisfy the conditions of To ≦ Ti + α and Hi ≦ β. Is more desirable. Here, α = 1 ° C. and β = 80% are set. That is, when the outside air has a low humidity and is equal to or lower than the room temperature, air with a refreshing feeling can be introduced by performing the air supply operation. This numerical value is not limited to the value shown here.

  Further, during the exhaust operation shown by 1100 and 1200, as shown by 2100 and 2200, the indoor fan 9 is blown and the air purifying filter attached to the indoor unit is operated to assist the purification of the indoor air. . As a result, the exhaust operation time can be reduced, and the discharge amount of the air-conditioned room air can be reduced, so that the loss of operation energy can be reduced.

  Note that the air look-out operation is an operation for keeping indoor air clean. Therefore, even when the button 220 is pressed and in this operation mode, when the operator presses a normal operation request button such as cooling, an air watching operation is executed in parallel with the cooling operation. It has come to be.

  The control flow described above will be described with reference to FIGS. FIG. 18 is a flowchart for explaining the operation of the operation signal receiving means 4000 shown in FIG.

  When the air watch button 220 in FIG. 16 is pressed, the operation means 200 displays the air watch on the liquid crystal display means 201 and transmits this signal to the air conditioner control device 100 as an air watch request signal. .

  When the air watch button 220 is pressed again, the operation means 200 turns off the display during the air watch on the liquid crystal display means 201 and transmits this signal to the air conditioner control device 100 as an air watch request release signal.

  Similarly, various operation mode signals (cooling, heating, air blowing, dehumidification, etc.) of the air conditioner and an operation / stop command signal are transmitted to the control device 100 of the air conditioner by the operation means 200.

  The process of receiving these operation signals is performed by the OS (operating system) included in the calculation unit of the control device 100 of the air conditioner by driving the operation signal receiving unit 4000 of FIG. Is monitoring.

  The operation signal reception process starts from block 4000 in FIG. First, in block 4100, an air watch request signal when the air watch button 220 from the operation means 200 is pressed is acquired.

  The air watch request signal is, for example, “1” when the button is pressed and there is a request for air watch start, “0” when there is a request for air watch stop, and when the button is not operated, It is received as a value of “−1”.

  Since the processing of blocks 4200 to 4340 is related to the update of the air watch continuation period, the description will be postponed and will be described first as the result of block 4100 leads to block 4400.

  At block 4400, an air lookout request signal is determined. If the air watch request signal is “−1” (no button operation), nothing is done. If the air watch request signal is “0” (no request), the air watch request flag is set to “0” (no request) in block 4410. If the air watch request signal is “1” (requested), block 4220 sets the air watch request flag to “1” (requested) and sets the air watch duration timer Tmax.

  Subsequently, in block 4500, the air watch request flag is determined. If there is an air watch request, block 4510 checks the passage of air watch duration Tmax. If the duration has elapsed, block 4520 sets the air watch request flag “0” to cancel the air watch request. Finally, the process ends at block 4600. In this way, it is possible to instruct the air watch control unit 5000 to request air watch during the predetermined duration Tmax.

  Next, a case where another operation button of the operation unit is operated will be described. That is, in block 4200, which is not described, an operation mode signal (cooling, heating, dehumidification, etc.) for commanding the normal operation of the air conditioner and its operation / stop command signal are acquired from the operation means 2000.

  For example, when there is an operation command signal, the normal operation request operation signal sets a value such as 1/2/3 corresponding to the cooling / dehumidification / heating of the operation mode signal transmitted at the same time. When there is a stop command signal, a value of “0” is set. When there is no operation / stop button operation, a value of “−1” is set as the previous continuation.

  Subsequently, in block 4300, a normal operation request operation signal is determined. If it is a normal operation request operation signal “−1” (no button operation), nothing is done. If the normal operation request signal is “0” (no request), the block 4310 sets the normal operation request “0” (no request). If the normal operation request signal is “> 0” (requested), in block 4320, the normal operation request is set to the operation mode set as the normal operation request operation signal.

  Subsequent determination of block 4330 determines whether the air guard request flag is “1”, that is, whether the air guard is already in operation, and if so, the air guard request signal acquired in block 4100 is forced in block 4340. Change to "1".

  As a result, the processing of the block 4420 described above is executed, and the air watch continuation duration Tmax is reset, that is, updated.

  In this way, the air conditioner control device 100 sets / cancels the air watch request flag for the air watch operation in accordance with the air watch request signal from the operation means 200, and adjusts the air watch operation condition. When the predetermined duration Tmax elapses, the air watch request flag is operated so as to end the air watch operation, and this is provided to the air watch control means 5000.

  However, when the operation button of the operation means 200 is operated during the air watch and another operation request is generated, the air watch continuation period is updated. The air watch function will continue forever, eliminating the need to pay attention to the air watch settings.

  Then, since the operation button of the operation means 200 is not operated when there is no long-term absence or the like, the air watch function ends when the set air watch continuation period elapses, and no unnecessary operation is performed.

  The set value of the normal operation request is sent to the air conditioner control means 102 and used for operation control of the air conditioner corresponding to the set value. Air look-up operation is performed in parallel regardless of this normal operation.

  FIG. 19 is a flow chart for explaining the air watch operation that operates according to the air watch request flag shown in FIG.

  The air watch control unit 5000 in FIG. 19 is executed in a short cycle by an OS (operating system) included in the calculation unit of the control device 100 of the air conditioner, and realizes air watch by controlling state transition. .

  In the air watch control process of FIG. 19, block 5000 is the entrance. In block 5100, the presence or absence of the air watch request is checked by the air watch request flag “1/0”. , The LED indicating that the air is being looked at in front of the indoor unit is turned off, the air conditioner control means 102 is released from the air blow request exclusively for air look-up, and the exhaust operation request is sent to the air supply / exhaust device control means 104 Cancel the air supply operation request, release the power supply to the air contamination sensor, set the watch state “0”, which is the state control management variable when there is a request for air watch control, and set all the states to As an initial state, the process ends at block 5120.

  If there is an air watch request, the process proceeds to block 5300, where the processing of the block shown on the right side according to the values 0, 1, 2, 3, 4, 5, 6 indicated by the watch state is performed.

  When the lookout state is “0”, that is, when the air lookout operation has just started, the LED indicating that the air lookout is attached to the easy-to-see place on the front surface of the indoor unit is turned on in block 5350, and the air pollution sensor is energized. The air pollution sensor stabilization wait timer TCmin is set, the state for executing the air watch operation is advanced to the watch state “1”, and the processing is ended by block 5900. The next time this dehumidification control 5000 is executed, the block corresponding to the lookout state “1” is executed.

  When the lookout state is “1”, the block 5400 waits for the elapse of the air pollution sensor stabilization wait timer TCmin. If the time has elapsed, block 5410 advances to the lookout state “2” and block 5900 ends the process. The next time this air watch control 5000 is executed, the block corresponding to the watch state “2” is executed.

  When the look-out state is “2”, the measurement value C of the air contamination sensor is acquired in block 5450, and in block 5460, the determination of C ≧ CH, that is, the presence or absence of air contamination is determined. If there is no air contamination, the process is terminated at block 5900, and the lookout state “2” is continued to repeatedly determine air contamination. If contamination is detected, block 5470 sets an indoor air blow request dedicated to the air conditioner control means 102, sets an exhaust operation request to the air supply / exhaust device control means 104, and sets the exhaust operation request. The minimum operation time timer Thmin is set, the look-ahead state is advanced to 3, and the processing is ended by block 5900. The next time this air watch control 5000 is executed, the block corresponding to the watch state “3” is executed.

  When the watch state is “3”, the block 5500 waits for the elapse of the minimum operation time timer Thmin of the exhaust operation. If the time has elapsed, block 5510 advances to lookout state “4” and block 5900 ends the process. The next time this air watch control 5000 is executed, the block corresponding to the watch state “4” is executed.

  When the look-out state is “4”, the measured value C of the air dirt sensor is acquired in block 5550, and in block 5560, it is determined whether C ≦ CL, that is, whether air pollution is eliminated. If it has not been eliminated, the process ends at block 5900, and air pollution elimination is checked repeatedly. When the cancellation is determined, block 5570 cancels the indoor air blow request dedicated to the air look-up operation to the air conditioner control means 102, cancels the exhaust operation request to the air supply / exhaust device control means 104, and 5 "and block 5900 ends the process. The next time this air watch control 5000 is executed, the block corresponding to the watch state “5” is executed.

  When the lookout state is “5”, in block 5600, the outside air temperature To, the room temperature Ti, and the humidity Hi are detected. Subsequently, in block 5610, a determination is made of the relative relationship between the outside air temperature and room temperature To <Ti + α and the humidity limit Hi <β. If the relationship is established, an air supply operation request to the air supply / exhaust device control means 104 is set in block 5620, an air supply duration timer Ts is set, and the look-ahead state “6” is advanced to block 5900. To finish the process. The next time this air watch control 5000 is executed, the block corresponding to the watch state “6” is executed.

  If the relationship is not established, the look-back state is returned to “2” in block 5630 and the process is terminated in block 5900. Next time when the air watch control 5000 is executed, the block corresponding to the watch state “2” is executed, that is, the processing is restarted from detection of air contamination.

  When the watch state is “6”, in block 5650, the passage of the air supply continuation time Ts is awaited. When the time has elapsed, the air supply operation request to the air supply / exhaust device control means 104 is canceled at block 5660, the watch state is returned to “2”, and the processing is ended at block 5900. Next time when the air watch control 5000 is executed, the block corresponding to the watch state “2” is executed, that is, the processing is restarted from detection of air contamination. The contents of the time chart shown in FIG. 17 are realized by the procedure described in detail above.

  Note that the air supply operation and the exhaust operation have the following operational restrictions. If this condition is met, the air supply operation or the exhaust operation is stopped if it is in operation, and the air supply operation or the exhaust operation is stopped. If there is a request (button operation), the operation is not started, and the “supply / exhaust” lamp of the indoor unit 1 is blinked to notify the user to that effect.

  The conditions for not performing the air supply operation are as follows. (1) When the outdoor temperature is about 30 ° C. or higher, or about 3 ° C. or lower, the sub-fan 19 and the air supply / exhaust duct may be condensed, so the air supply operation is not performed. If the outdoor air temperature is 30 ° C. or higher, there is a possibility that the air is being cooled indoors, and when high-temperature and high-humidity air flows from the outdoor, the sub fan 19 and the like are cooled, so the air temperature Since the dew point is below the dew point and condensation occurs, air supply operation is not performed. On the other hand, if the outdoor temperature is 3 ° C or less, the room may be heated, and if the outside of the duct for supply and exhaust is in a high-temperature and high-humidity environment and cold air flows in, the outside of the duct may condense. There is no air supply operation. (2) During the cooling operation, when the difference between the room temperature and the outdoor temperature is about 7 ° C. or more, the air supply operation is not performed for the above reason. (3) During the heating operation, when the difference between the room temperature and the outdoor temperature is about 22 ° C. or higher, the air supply operation is not performed for the above reason. (4) When indoor humidity is about 70% or more, the air supply operation is not performed for the same reason.

  The conditions for not performing exhaust operation are as follows. When the room temperature is about 43 ° C. or higher, the exhaust operation is not performed to protect the sub fan (supply / exhaust fan) 19.

  In the present embodiment, the example in which the air supply / exhaust mechanism is provided in the indoor unit has been described. However, in terms of the air watch operation, the same effect can be expected even if provided in the outdoor unit. it can.

  As described above, according to this embodiment, the indoor unit is connected to the indoor unit by the air pipe for the indoor air contamination sensor, the indoor air supply to the indoor air, and the indoor air for the outdoor air exhaust to the outside. An exhaust device and an air purifier are installed, always watching the state of the room air, and when the degree of contamination begins to increase, the exhaust operation is performed automatically and the occupant feels Eliminates the inconvenience of having to start or end the exhaust operation by pressing the exhaust button on the operating means after feeling the contamination. Also, by monitoring the indoor air condition and properly exhausting the air, the indoor air condition is always kept below a certain range to maintain a stable and clean indoor air condition. In addition, by monitoring the air condition in the room and properly stopping the exhaust, the exhaust of the air-conditioning result in the room to the outside was reduced, and the loss of operating energy was reduced. Also, at the end of the exhaust operation, fresh outside air was supplied into the room for a certain period of time, providing a refreshing, refreshing and clean feeling reminiscent of deep breathing by breathing fresh outside air.

The external view of the indoor unit of the air conditioner which concerns on one Example of this invention. The external view of the state which removed the decorative cover of the indoor unit of FIG. AA sectional drawing of FIG. BB sectional drawing of FIG. External view of a sub fan unit. The perspective view which abbreviate | omitted the right side board of the sub fan unit of FIG. The perspective view which abbreviate | omitted a part of left side board of the sub fan unit of FIG. The figure which represents typically the flow of the air of the subfan unit shown in FIG. The figure showing the operation state of the sub fan unit shown in FIG. The figure which shows the flow of the air in a sub fan unit at the time of an air supply driving | operation. The figure which shows the flow of the air in a subfan unit at the time of exhaust operation. The figure which shows the flow of the air in a subfan unit at the time of circulation driving | operation. Explanatory drawing at the time of using together the air_conditionaing | cooling operation of the indoor unit of FIG. Explanatory drawing at the time of using together the heating operation of the indoor unit of FIG. 1, and the circulation operation or the air supply operation of a sub fan unit. The block diagram of the control apparatus of the air conditioner which is one Example of this invention. The structural example of the operation means which implement | achieves one Example of this invention. The time chart which shows the operation | movement which concerns on one Example of this invention. The flowchart of the air guard request reception process which is one Example of this invention. The flowchart of the air look-out control which is one Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Indoor unit, 2 ... Unit box body, 3 ... Cosmetic cover, 4 ... Front cover, 5 ... Air inlet, 6 ... Air blower outlet, 7 ... Up-and-down wind direction board, 8 ... Air filter, 8a ... Frame part, 8b DESCRIPTION OF SYMBOLS ... Filter part, 9 ... Main fan, 10 ... Heat exchanger, 11 ... Dew receiving, 12 ... Air duct, 13 ... Sub blower outlet, 14 ... Main fan motor, 15 ... Sub fan unit, 15a ... Suction side casing, 15b DESCRIPTION OF SYMBOLS ... Outlet side casing, 16 ... Sub inlet, 17 ... Sub outlet, 18 ... Supply / exhaust port, 19 ... Sub fan, 20 ... Sub fan motor, 21 ... Air supply filter, 22 ... Outdoor duct, 22a ... Outdoor duct Front end portion, 23 ... exhaust air passage, 24 ... supply air passage, 25 ... supply / exhaust air passage, 26 ... supply air circulation passage, 27 ... mouth ring, 29 ... damper I, 31 ... damper II, 33 ... prefilter, 1 0 ... control device for an air conditioner, 200 ... operation unit, 4000 ... operation signal receiving means, 102 ... air conditioner control unit, 5000 ... air guard control means, 104 ... supply and exhaust device control means.

Claims (9)

  In an air conditioner comprising a heat exchanger provided in an indoor unit, a fan for passing air through the heat exchanger, and a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room An air conditioner provided with a sensor provided in the indoor unit for detecting dirt on the air and a function for causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor.   In an air conditioner comprising a heat exchanger provided in an indoor unit, a fan for passing air through the heat exchanger, and a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room A sensor provided in the indoor unit for detecting dirt on the air, and an air conditioner having a function of causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor and thereafter performing an air supply operation.   In an air conditioner comprising a heat exchanger provided in an indoor unit, a fan for passing air through the heat exchanger, and a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room A sensor provided in the indoor unit for detecting dirt on the air, and a function for causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor, and then to perform an air supply operation. And an air conditioner that determines whether or not the air supply operation is possible based on the outside air humidity.   4. The air conditioner according to claim 3, wherein the determination is a determination to operate the air supply operation when the outside air temperature is substantially equal to or lower than the indoor temperature and when the outdoor humidity is lower than a set value. .   A heat exchanger provided in the indoor unit, a fan for passing air through the heat exchanger, a filter provided upstream of the heat exchanger, exhausting the indoor air to the outside and discharging the outdoor air to the indoor In the air conditioner provided with an air supply / exhaust mechanism for taking in the air, a sensor provided in the indoor unit for detecting dirt on the air, causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor, and Air conditioner with function to operate.   A heat exchanger provided in the indoor unit, a fan for passing air through the heat exchanger, a filter provided upstream of the heat exchanger, exhausting the indoor air to the outside and discharging the outdoor air to the indoor In the air conditioner provided with an air supply / exhaust mechanism for taking in the air, a sensor provided in the indoor unit for detecting dirt on the air, causing the air supply / exhaust mechanism to perform an exhaust operation based on an output of the sensor, and An air conditioner having a function of operating and thereafter performing an air supply operation and an operation of the main fan.   In an air conditioner comprising a heat exchanger provided in an indoor unit, a fan for passing air through the heat exchanger, and a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room An air conditioner provided with a monitoring operation for causing the air supply / exhaust mechanism to perform an exhaust operation and a stop operation based on air contamination in a room in which the indoor unit is provided during a set period.   A heat exchanger provided in the indoor unit, a fan for passing air through the heat exchanger, a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room, and various operations and stopping An air conditioner having an operating means for instructing, comprising a monitoring operation for causing the air supply / exhaust mechanism to perform an exhaust operation and a stop operation based on air contamination in a room in which the indoor unit is provided during a set period, An air conditioner that terminates the monitoring operation when the monitoring operation is not canceled and there is no operation or stop operation by the operating means within the set period. A heat exchanger provided in the indoor unit, a fan for passing air through the heat exchanger, a supply / exhaust mechanism for discharging indoor air to the outside and taking outdoor air into the room, and various operations and stopping An air conditioner comprising an operating means for instructing, comprising a monitoring operation that causes the air supply / exhaust mechanism to perform an exhaust operation and a stop operation based on air contamination in a room in which the indoor unit is provided during a setting period, An air conditioner that resets the set period when the monitoring operation is not canceled and there is a drive operation or a stop operation by the operating means within the set period.

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