JP2014219153A - Ventilation air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation air conditioner capable of ensuring the longer life of a humidifying element and keeping an indoor environment comfortable.SOLUTION: A ventilation air conditioner comprises: a total enthalpy heat exchanger 21; an air conditioning coil 22 heating air supplied from the total enthalpy heat exchanger 21; a humidifying element 23 provided with a moisture permeable film tube 92 which is formed of a porous moisture permeable film and to which water 80 is supplied, and heating the air heated by the air conditioning coil 22 by steam evaporated from the moisture permeable film tube 92; and a control unit 17 controlling the air conditioning coil 22, water supply to the humidifying element 23, and water drainage from the humidifying element 23. A temperature of blown air 82 humidified by and blown out from the humidifying element 23 varies depending on the water drainage from the humidifying element 23. If the water drainage is performed on the humidifying element 23, the control unit 17 controls a capability of the air conditioning coil 22 according to a predicted temperature for the temperature of the blown air 82.

Description

  The present invention relates to a ventilation air conditioner.

  Conventionally, there has been a humidifier that discharges impurities contained in the water accumulated in the humidifying element by opening the drain electromagnetic valve and discharging the water filling the humidifying element (see, for example, Patent Document 1). .

  In addition, there has been a sauna device that controls the temperature range of water used for humidification filled in the humidifier to a predetermined temperature range (see, for example, Patent Document 2).

  Moreover, there existed the ventilation air conditioner which adjusts humidification amount by controlling the capability of an air-conditioning coil based on external temperature and external air humidity (for example, refer patent document 3).

JP-A-8-247509 (paragraph [0036]) JP 2011-56295 A (paragraph [0059]) International Publication No. 2012/077201 (paragraph [0029])

  The humidifier described in Patent Literature 1 uses a humidifying element that spontaneously evaporates from the moisture permeable membrane, thereby ventilating the indoor humidity. When the humidifying device described in Patent Document 1 does not require humidification during heating operation, or when the indoor humidity exceeds a predetermined humidity during air conditioning operation such as cooling operation or heating operation, the drain electromagnetic valve is provided. By opening, the water filled in the humidifying element was discharged, and impurities contained in the water deposited on the humidifying element were discharged.

  In other words, the humidifying device described in Patent Document 1 did not open the drain electromagnetic valve when there was a humidification request, so impurities contained in water, that is, water impurities accumulated on the humidifying element. Therefore, in the control in which the drain electromagnetic valve is not opened when the humidification request is made, water impurities are not discharged, so the water impurities remain in the humidifying element, and the amount of humidification is reduced. In particular, among devices such as a humidifier, a device that intentionally warms the outside air using a heat pump or the like and performs control to increase the supply humidification amount, the deposition rate of water impurities deposited on the humidifying element , The amount of humidification was further reduced.

  Therefore, a device that performs humidification, such as a humidifier as described in Patent Document 1, discharges the water filled in the humidifying element when there is no humidification request. The water filled in the element was not discharged. As a result, when there is a humidification request, the life of the humidifying element may be shortened during operation of the humidifying element, which may increase the replacement cost of the humidifying element.

  Moreover, the sauna apparatus of patent document 2 was suppressing the precipitation of the impurity of the water deposited on a humidifier by controlling the temperature range of the water used for humidification to the predetermined temperature range. As a result, the sauna device controlled the blowing temperature.

  However, in a device that performs humidification, such as the sauna device described in Patent Document 2, an ultrasonic humidifier has been used. An ultrasonic humidifier blows out water vapor containing a large amount of impurities such as water calcium, water magnesium, and water silica. Therefore, precipitates were likely to be generated in the humidified room or the humidified duct. Since the ultrasonic humidifier discharges water vapor containing a large amount of impurities over the entire area of the room, the range for removing the precipitates extends over the entire area of the room. Therefore, since the cost for removing the deposits is high, an apparatus that performs humidification, such as an ultrasonic humidifier, is not suitable for humidifying a general living room, although it controls the blowing temperature.

  Moreover, when the indoor humidity exceeded the set humidity, the ventilation air conditioner described in Patent Literature 3 determined that there was no humidification request, and stopped the operation of the air conditioning coil. That is, the ventilation air conditioner described in Patent Document 3 sets the air conditioning coil in the thermo-off state when it is determined that there is no humidification request. Since the humidification amount and the blowing temperature are adjusted according to the heating amount of the air conditioning coil, the blowing temperature was not controlled when the operation of the air conditioning coil was stopped, that is, when the air conditioning coil was in the thermo-off state.

  Therefore, in a device that performs humidification such as the ventilation air conditioner described in Patent Document 3, the blowout temperature is controlled when there is a humidification request, but the blowout temperature is controlled when there is no humidification request. There wasn't. Therefore, if the water filled in the humidifying element that spontaneously evaporates is discharged from the moisture permeable membrane when there is no request for humidification, the drainage operation is performed while the air conditioning coil remains in the thermo-off state.

  Therefore, when it is assumed that there is no humidification request and the outside air temperature is low, the air-conditioning coil is in a thermo-off state, so that the temperature of the air blown into the room from the humidifying device is lowered. Therefore, the draft feeling accompanying a rapid temperature change occurred and the comfort was impaired. As a result, when there is no humidification request and the humidifying element is being drained, the blowing temperature becomes unstable, which may impair comfort.

  In other words, the device that humidifies with the humidifying element that naturally evaporates from the moisture permeable membrane is not subjected to wastewater treatment during the operation of the humidifying element, and the blowout temperature is not controlled during drainage of the humidifying element. .

  Therefore, there has been a problem that a device that humidifies with a humidifying element that naturally evaporates from the moisture permeable membrane cannot suppress the temperature change of the blown air while discharging impurities of water accumulated on the humidifying element.

  The present invention has been made to solve the above-described problems, and suppresses the temperature change of the blown air while discharging impurities of water accumulated on the humidifying element that naturally evaporates from the moisture permeable membrane. An object of the present invention is to provide a ventilation air conditioner that can be used.

  A ventilation air conditioner according to the present invention is provided with a total heat exchanger, an air conditioning coil for heating air supplied from the total heat exchanger, and a bag formed of a porous moisture permeable membrane. Is a control unit that controls a humidifying element that humidifies air heated by the air conditioning coil with water vapor evaporated from the bag, the air conditioning coil, water supply of the humidifying element, and drainage of the humidifying element And the temperature of the blown air that is humidified and blown out by the humidifying element fluctuates with the drainage of the humidifying element, and the control unit drains the humidifying element, The capacity of the air conditioning coil is controlled according to the predicted temperature of the blown air temperature.

  In the present invention, when performing drainage control of the humidifying element that naturally evaporates from the moisture permeable membrane, the blown air is controlled. Therefore, it is possible to suppress the temperature change of the blown air while discharging impurities of water accumulated on the humidifying element that naturally evaporates from the moisture permeable membrane. Therefore, it is possible to extend the life of the humidifying element that naturally evaporates from the moisture permeable membrane, and to provide a ventilation air conditioner that can keep the indoor environment comfortable regardless of the outside air temperature. .

It is a figure which shows an example of schematic structure of the external appearance of the ventilation air conditioner 1 in Embodiment 1 of this invention. It is a figure which shows an example of schematic structure at the time of seeing through the ventilation air conditioner 1 in Embodiment 1 of this invention from the upper surface. It is a case where the ventilation air conditioner 1 in Embodiment 1 of this invention is seen through from the upper surface, Comprising: It is a figure which shows an example of the structure which set the opening degree of the air path switching damper 25 to full open. It is a figure which is a case where the ventilation air conditioner 1 in Embodiment 1 of this invention is seen through from the upper surface, Comprising: It is a figure which shows an example of the structure which set the opening degree of the air path switching damper 25 to full closure. It is a figure which shows an example of the cross-sectional structure of the AA cross section of the ventilation air conditioner 1 of FIGS. 2-4 in Embodiment 1 of this invention. It is a figure which shows an example of the detailed structure of the humidification element 23 in Embodiment 1 of this invention. It is a figure which shows an example of a function structure of the control part 17 in Embodiment 1 of this invention. It is a flowchart explaining the example of control of the ventilation air conditioner 1 in Embodiment 1 of this invention. It is a figure which shows an example of the drainage period of the humidification element 23 in Embodiment 1 of this invention, and the drainage time for every drainage period. It is a figure which shows an example of a function structure of the control part 17 in Embodiment 2 of this invention. It is a flowchart explaining the example of control of the ventilation air conditioner 1 in Embodiment 2 of this invention. It is a figure which shows an example of the system configuration | structure of the ventilation air conditioning system which used the ventilation air conditioning apparatus 1 in Embodiment 3 of this invention as a component. It is a figure which shows an example of a function structure of the control part 17 in Embodiment 3 of this invention. It is a flowchart explaining the example of control of the ventilation air conditioner 1 in Embodiment 3 of this invention. It is a figure which shows an example of a function structure of the control part 17 in Embodiment 4 of this invention. It is a flowchart explaining the example of control of the ventilation air conditioner 1 in Embodiment 4 of this invention. It is a figure which shows an example of a function structure of the control part 17 in Embodiment 5 of this invention. It is a flowchart explaining the example of control of the ventilation air conditioner 1 in Embodiment 5 of this invention. It is a figure which shows an example of a function structure of the control part 17 in Embodiment 6 of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, although the step which describes the program which performs operation | movement of Embodiment 1-6 of this invention is a process performed in time series along the order described, it is not necessarily processed in time series, it is parallel Processing that is executed manually or individually may also be included.

  It does not matter whether the functions described in the first to sixth embodiments are realized by hardware or software. That is, each block diagram described in the first to sixth embodiments may be considered as a hardware block diagram or a software functional block diagram. For example, each block diagram may be realized by hardware such as a circuit device, or may be realized by software executed on an arithmetic device such as a processor (not shown).

  In addition, each block in the block diagrams described in the first to sixth embodiments only needs to perform its function, and the configuration may not be separated by each block.

  In each of the first to sixth embodiments, items that are not particularly described are the same as those in the first to sixth embodiments, and the same functions and configurations are described using the same reference numerals.

  In addition, Embodiments 1 to 6 may be implemented alone or in combination. In either case, the advantageous effects described below can be obtained.

  Moreover, the setting examples of various values and flags described in each of the first to sixth embodiments are merely examples, and are not particularly limited thereto.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an example of a schematic configuration of an external appearance of a ventilation air conditioner 1 according to Embodiment 1 of the present invention. As shown in FIG. 1, in the ventilation air conditioner 1, a main body casing 9 is provided with an exhaust air inlet 11, an air supply outlet 14, a control box 10, and the like. The control box 10 has a control unit 17 formed therein. A remote controller 19 is connected to the control box 10, and various commands from the remote controller 19 are supplied to the control unit 17. The control unit 17 performs various controls based on various commands supplied. Although mentioned later for details, the control part 17 controls the ventilation operation | movement of the ventilation air conditioner 1, for example. Further, for example, the remote controller 19 accepts an operation mode switching operation or the like of the ventilation air conditioner 1.

  An outline of the ventilation air conditioner 1 will be described. When the ventilation air conditioner 1 performs drainage control of the humidifying element 23 (described later), the blown air 82 (described later) is controlled. Therefore, the ventilation air conditioner 1 suppresses the temperature change of the blown air 82 (described later) while discharging impurities of water 80 (described later) accumulated on the humidifying element 23 (described later). Therefore, the ventilation air conditioner 1 extends the life of the humidifying element 23 (described later) and keeps the indoor environment comfortable regardless of the outside air temperature. Next, the detail of the ventilation air conditioner 1 is demonstrated in order using a figure.

  FIG. 2 is a diagram showing an example of a schematic configuration when the ventilation air conditioner 1 according to Embodiment 1 of the present invention is seen through from above. As shown in FIG. 2, the ventilation air conditioner 1 includes a main body casing 9. The main body casing 9 forms a casing of the ventilation air conditioner 1. The main body casing 9 is formed in, for example, a box structure. That is, the main body casing 9 is, for example, an upper member that has a side surface formed by a member that forms a short side direction and a member that forms a long side direction, and covers an end of the formed side surface. And a lower member. The material and shape of the main casing 9 are not particularly limited to these.

  An exhaust air inlet 11, an exhaust air outlet 12, an air supply air inlet 13, an air supply air outlet 14, and a control box 10 are provided outside the main body casing 9. The exhaust air inlet 11, the exhaust air outlet 12, the air supply inlet 13, and the air supply outlet 14 are formed as duct connection flanges. The exhaust air inlet 11 and the air supply outlet 14 are provided, for example, on members facing the indoor side among members in the short direction of the main body casing 9. The exhaust outlet 12 and the air supply inlet 13 are provided, for example, on members facing the outdoor side among the members in the short direction. An air supply air passage that connects the air supply inlet 13 and the air supply outlet 14 is formed inside the main body casing 9 as a set of the air supply inlet 13 and the air supply outlet 14. An exhaust air passage that connects the exhaust air inlet 11 and the exhaust air outlet 12 is formed inside the main casing 9 as a set of the exhaust air inlet 11 and the exhaust air outlet 12. That is, the ventilation air conditioner 1 is formed with a pair of air outlets and air inlets.

  The control box 10 is provided, for example, on one side of the longitudinal members. The control box 10 is provided with a terminal block and a control circuit inside. An electric wire or the like is connected to the terminal block, and the remote controller 19 described in FIG. 1 is connected via the electric wire or the like. A control unit 17 is configured in the control circuit.

  Inside the main casing 9, there are a total heat exchanger 21, an air conditioning coil 22, a humidifying element 23, an air path switching damper 25, an exhaust fan 26, an air supply fan 27, a water supply pipe 31, a drain pipe 32, and a water supply valve 35. A drain valve 36, an indoor temperature sensor 41, an indoor humidity sensor 42, an outside air temperature sensor 43, an outside air humidity sensor 44, and the like are provided. In addition, illustration of the refrigerant | coolant piping connected to the air conditioning coil 22 is abbreviate | omitted here.

  The total heat exchanger 21 is provided between the exhaust fan 26 and the air supply fan 27. In the total heat exchanger 21, for example, the exhaust air passage described above and the air supply air passage described above intersect each other vertically. Since the total heat exchanger 21 has a configuration in which the exhaust air passage and the supply air passage intersect each other, the total heat is generated between the exhaust air flowing through the exhaust air passage and the supply air flowing through the air supply air passage. Is exchanged and heat exchange ventilation is performed. That is, the total heat exchanger 21 is provided between the exhaust air passage and the supply air passage, and continuously performs total heat exchange between the indoor air that is the exhaust flow and the outdoor air that is the supply air flow. .

  The air conditioning coil 22 is provided between the air supply fan 27 and the humidifying element 23. The air conditioning coil 22 is a heat exchanger to which a refrigerant pipe (not shown) is connected, and heat exchange is performed between supplied air 81 (described later) supplied from the air supply fan 27 and refrigerant supplied from the refrigerant pipe. That is, the air conditioning coil 22 is a direct expansion coil, and when the supply air 81 (described later) supplied from the total heat exchanger 21 passes, the supplied supply air 81 (described later) is heated, Heated supply air 81 (described later) is supplied to the humidifying element 23. Therefore, the air conditioning coil 22 has a humidification amount of blown air 82 (described later) blown from the supply air outlet 14 and a blown air 82 (described later) blown from the supply air outlet 14 according to the heating amount. Adjust the temperature. Therefore, the air conditioning coil 22 can control the humidification of the humidifying element 23 and can control the temperature of blown air 82 (described later) blown out from the supply air outlet 14.

  The humidifying element 23 is provided between the air conditioning coil 22 and the supply air outlet 14 and humidifies the supply air 81 (described later) that has passed through the air conditioning coil 22. The details of the humidifying element 23 will be described later with reference to FIG.

  The air path switching damper 25 is provided on the upstream side of the exhaust air path, and passes the indoor air that is the exhaust flow to the total heat exchanger 21 and the indoor air that is the exhaust flow to the total heat exchanger 21. Without switching, the bypass air path that is directly sent to the exhaust fan 26 is switched. An operation example of the air path switching damper 25 will be described later with reference to FIGS. 3 and 4.

  The exhaust fan 26 is provided on the exhaust air passage side between the exhaust outlet 12 and the total heat exchanger 21, and a negative pressure is generated inside the main body casing 9 by rotating an exhaust fan (not shown). Then, the room air is taken in from the exhaust air inlet 11, and the room air flowing through the exhaust air passage is blown out from the exhaust air outlet 12.

  The air supply fan 27 is provided between the total heat exchanger 21 and the air conditioning coil 22 on the air supply air passage side, and a negative pressure is generated in the main body casing 9 by rotating an air supply fan (not shown). Thus, outdoor air is taken in from the air supply inlet 13, and the outdoor air circulated through the air supply air passage is blown out from the air supply outlet 14.

  The water supply pipe 31 is connected to the humidifying element 23 and supplies water 80 (described later) to the humidifying element 23 to supply water to the humidifying element 23. The water supply pipe 31 is provided with a water supply valve 35, and the water supply valve 35 opens and closes the water flow through the water supply pipe 31. The water supply valve 35 is composed of, for example, an electromagnetic valve, and is controlled based on a control command from the control unit 17.

  The drain pipe 32 is connected to the humidifying element 23, and drains water from the humidifying element 23 by discharging water 80 (described later) from the humidifying element 23. The drain pipe 32 is provided with a drain valve 36, and the drain valve 36 opens and closes the water flow through the drain pipe 32. The drain valve 36 is constituted by, for example, an electromagnetic valve, and is controlled based on a control command from the control unit 17.

  For example, when the water supply valve 35 is opened by the control command from the control unit 17 and water is supplied to the humidifying element 23, the drain valve 36 is closed by the control command from the control unit 17. For example, when the drain valve 36 is opened by the control command from the control unit 17 and the humidifying element 23 is drained, the water supply valve 35 is closed by the control command from the control unit 17. That is, the control part 17 performs efficient water supply / drainage by making the water supply valve 35 and the drain valve 36 perform different opening / closing operations complementarily. The operation example described above is an example, and the present invention is not particularly limited to this.

  The room temperature sensor 41 is provided on the exhaust air path side between the exhaust air inlet 11 and the total heat exchanger 21. The indoor temperature sensor 41 measures the indoor temperature and supplies the measurement result to the control unit 17. The indoor humidity sensor 42 is provided on the exhaust air path side between the exhaust air inlet 11 and the total heat exchanger 21. The indoor humidity sensor 42 measures indoor humidity and supplies the measurement result to the control unit 17.

  The outside air temperature sensor 43 is provided on the supply air path side between the supply air inlet 13 and the total heat exchanger 21. The outside air temperature sensor 43 measures the temperature of the outside air and supplies the measurement result to the control unit 17. The outside air humidity sensor 44 is provided on the supply air path side between the supply air inlet 13 and the total heat exchanger 21. The outside air humidity sensor 44 measures the humidity of the outside air and supplies the measurement result to the control unit 17.

  The control unit 17 determines the heating capacity of the air conditioning coil 22 based on the measurement results of the indoor temperature sensor 41, the indoor humidity sensor 42, the outside air temperature sensor 43, the outside air humidity sensor 44, and the like. The control unit 17 performs various other calculations, the detailed operation of which will be described later.

  The arrangement configuration and operation described above are examples, and are not particularly limited thereto. In short, it is only necessary that the ventilation air conditioner 1 can change the state of the room air by performing operations such as total heat exchange, heat exchange, and humidification when performing ventilation.

  Next, an operation example of the air path switching damper 25 will be described with reference to FIGS. 3 and 4. FIG. 3 is a diagram illustrating an example of a configuration in which the ventilation air conditioner 1 according to Embodiment 1 of the present invention is seen through from above, and the opening degree of the air path switching damper 25 is set to be fully open. As shown in FIG. 3, when the air path switching damper 25 is open, the indoor air flowing through the exhaust air path passes through a bypass air path provided between the total heat exchanger 21 and the main body casing 9. Then, the air is blown out from the exhaust outlet 12 through the exhaust fan 26.

  FIG. 4 is a diagram illustrating an example of a configuration in which the ventilation air conditioner 1 according to Embodiment 1 of the present invention is seen through from the top, and the opening degree of the air path switching damper 25 is set to be fully closed. As shown in FIG. 4, when the air path switching damper 25 is closed, the room air flowing through the exhaust air path passes through the total heat exchanger 21 and blows out from the exhaust air outlet 12 via the exhaust fan 26. Is done.

  That is, by adjusting the opening degree of the air path switching damper 25, whether or not the total heat exchanger 21 performs total heat exchange between the indoor air flowing through the exhaust air path and the outdoor air flowing through the air supply air path. Is controlling. For example, when the outside air temperature is lower than the room temperature as in the middle period, which is spring and autumn, the ventilation air conditioner 1 opens the air path switching damper 25 to the full opening, thereby bypassing the outside air cooling. I do. In addition, for example, in the summer and winter seasons when the air conditioning load occurs, the ventilation air conditioner 1 fully closes the opening of the air path switching damper 25 in order to recover the heat of the exhaust. Provide total heat exchange ventilation.

  FIG. 5 is a diagram showing an example of a cross-sectional configuration of the AA cross section of the ventilation air conditioner 1 of FIGS. 2 to 4 according to Embodiment 1 of the present invention. As shown in FIG. 5, a humidified air passage section 60 is formed between the air supply blower 27 and the air supply outlet 14. The humidified air passage portion 60 is formed by a humidified air passage upper portion 61 and a humidified air passage lower portion 62. The humidified air path upper part 61 is formed of, for example, a foamed resin and covers the air conditioning coil 22 and the humidifying element 23. The humidified air path lower part 62 is provided with a drain pan made of foamed resin, for example, and is formed as a structure in which a plastic material is simultaneously molded on the water receiving surface of the drain pan to prevent water from entering the foamed resin. The humidified air passage upper portion 61 and the humidified air passage lower portion 62 have a structure that fits in the vertical direction, and the humidified air passage portion 60 is integrally formed.

  Further, as shown in FIG. 5, the air conditioning coil 22 is provided with a refrigerant inlet / outlet 51, and the refrigerant enters and exits through the refrigerant inlet / outlet 51, whereby the air conditioning coil 22 circulates the refrigerant into the air supply coil 27. Heat exchange is performed between the supplied air and the refrigerant circulating in the air conditioning coil 22.

  Next, the principle of humidification of the humidifying element 23 will be described. FIG. 6 is a diagram illustrating an example of a detailed configuration of the humidifying element 23 according to Embodiment 1 of the present invention. As shown in FIG. 6, when the water supply valve 35 is open, the humidifying element 23 is supplied with water 80 through the water supply pipe 31 and fills the water 80. The humidifying element 23 includes a plurality of moisture permeable membrane tubes 92, and the moisture permeable membrane tubes 92 are filled with water 80. Each of the plurality of moisture permeable membrane tubes 92 has a laminated structure with a spacer 91 interposed therebetween. The moisture permeable membrane tubes 92 are formed with slits by spacers 91 so that an air circulation path is formed. Therefore, the supply air 81 that has passed through the air conditioning coil 22 passes through the air flow path and is blown out from the supply air outlet 14 as the blown air 82.

  An enlarged view of the broken line portion 71 shown in FIG. 6 is shown in a broken line portion 72 shown in FIG. A schematic configuration of the moisture permeable membrane tube 92 is shown in the broken line portion 72. The moisture permeable membrane tube 92 is a bag-like structure in which two vaporized moisture permeable membranes are joined to each other, and a plurality of such components are arranged at regular intervals.

  As described above, the spacers 91 are provided between the moisture permeable membrane tubes 92, so that slits at regular intervals that allow the passage of air are formed. During the humidification operation, the ventilation air conditioner 1 fills the moisture permeable membrane tube 92 with water 80, and the water 80 evaporates from many small holes formed in the moisture permeable membrane. The supply air 81 passes through the slit formed between the moisture permeable membrane tubes 92, whereby the humidity is continuously supplied to the supply air 81. In particular, in the winter season when the operation mode of the air conditioning coil 22 is set to heating, the supply air 81 is warmed by the air conditioning coil 22, so that the amount of humidification when passing through the humidifying element 23 increases.

  An enlarged view of the broken line portion 73 shown in FIG. 6 is shown in a broken line portion 74 shown in FIG. A cross-sectional configuration of the moisture permeable membrane tube 92 is shown in the broken line portion 74. The vaporization type moisture permeable membrane is formed of, for example, a super water-repellent porous film material 93. The super water-repellent porous film material 93 is a material in which a large number of small holes are provided as vaporization portions and moisture passes through in a vapor state. Therefore, the water 80 in the moisture permeable membrane tube 92 is released in the form of water vapor from the surface of the moisture permeable membrane tube 92, so that the supply air 81 that flows on the surface of the moisture permeable membrane tube 92 has a surrounding environment. Depending on the amount of saturated water vapor, the water vapor released from the moisture permeable membrane tube 92 is included. Accordingly, the blown air 82 is humidified by the humidifying element 23.

  In FIG. 6, description of the drain pipe 32 and the drain valve 36 is omitted. Moreover, the structure of the humidification element 23 demonstrated above shows an example, and is not specifically limited to this.

  When the ventilation air conditioner 1 is performing a humidification operation, mineral components of water 80 such as calcium, magnesium, and silica remain in the moisture permeable membrane tube 92 of the humidifying element 23. Therefore, the ventilation air conditioner 1 continues the humidification operation, whereby the concentration of the mineral component of the water 80 remaining inside the moisture permeable membrane tube 92 increases. Even if the concentration of the mineral component of the water 80 remaining inside the moisture permeable membrane tube 92 increases, if the ventilation air conditioner 1 further continues the humidifying operation, it remains inside the moisture permeable membrane tube 92. The mineral component of the water 80 is deposited in the moisture permeable membrane tube 92 without being completely dissolved in the moisture. Since the mineral component of the water 80 that is deposited is deposited inside the moisture permeable membrane tube 92, many small holes that are vaporized portions of the moisture permeable membrane tube 92 are clogged.

  Therefore, in the humidifying element 23, the amount of humidification is reduced, and further, the moisture permeable membrane tube 92 is broken, so that the degree of deterioration of the humidifying element 23 is accelerated and the life of the humidifying element 23 may be reached early.

  Therefore, in order to prevent such accumulation of mineral components of the water 80, the ventilation air conditioner 1 stops water supply to the humidifying element 23 for a certain period of time, that is, in a drainage cycle, even during the humidifying operation. In addition, by discharging the water 80, the mineral component of the water 80 is discharged along with the draining operation, and the inside of the moisture permeable membrane tube 92 of the humidifying element 23 is cleaned.

  However, simply discharging the water 80 in the humidifying element 23 may cause problems. Such an event will be described. For example, it is assumed that the operation of the humidifying element 23 shifts to a regular drainage mode set in the drainage cycle, and the discharge of the water 80 filled in the moisture permeable membrane tube 92 has started. At this time, in a state where the supply air 81 is heated by the air conditioning coil 22, the amount of humidification that can be supplied from the humidifying element 23 is decreased, and thus the temperature of the blown air 82 is rapidly increased. Further, when the air conditioning coil 22 is simply brought into the thermo-off state, the temperature of the blown air 82 changes abruptly.

  Specifically, since the humidifying element 23 evaporates the water 80 from the moisture permeable membrane tube 92 in the process of humidifying, heat of vaporization is generated on the surface of the moisture permeable membrane tube 92. Therefore, the supply air 81 that has passed through the air-conditioning coil 22 during the heating operation is cooled by the heat of vaporization when passing through the surface of the moisture permeable membrane tube 92, so that the temperature of the blown air 82 rises rapidly. There is no. At this time, if the humidifying element 23 is being drained, the amount of water 80 evaporated from the moisture permeable membrane tube 92 is reduced, so that the heat of vaporization generated on the surface of the moisture permeable membrane tube 92 is also reduced. If the heat of vaporization generated on the surface of the moisture permeable membrane tube 92 is reduced, the degree of cooling of the supply air 81 heated through the air conditioning coil 22 during the heating operation is reduced. Therefore, even if the supply air 81 passes through the humidifying element 23, the temperature of the blown air 82 rises rapidly.

  Further, the thermo-on state of the air conditioning coil 22 is used to mean a state in which the refrigerant is flowing in the air conditioning coil 22. On the other hand, the thermo-off state of the air conditioning coil 22 is a state in which an expansion valve (not shown) connected to the air conditioning coil 22 is closed at the maximum and no refrigerant flows or hardly flows in the air conditioning coil 22. Used to indicate. Therefore, if the air conditioning coil 22 is simply turned off, the air that has passed through the total heat exchanger 21 is supplied to the humidifying element 23 as the supplied air 81 without being heat exchanged by the air conditioning coil 22. . Therefore, the temperature of the blown air 82 changes rapidly.

  As a result, the user in the indoor room feels an uncomfortable draft feeling. Further, assuming an air conditioning system in which the air supply outlet 14 of the ventilation air conditioner 1 is directly connected to an air conditioner suction port (not shown), the air conditioner is blown out in a drainage mode in which the ventilation air conditioner 1 is draining. It is affected by the fluctuation of air 82. Therefore, it is assumed that the air conditioner falls into an unexpected heating thermo-off state or thermo-on state, exhibits an unstable behavior as the entire air conditioning system, and consequently impairs indoor comfort.

  Therefore, when the ventilation air conditioner 1 drains the humidifying element 23 while operating the humidifying element 23, the ventilation air conditioner 1 has the ability of the air conditioning coil 22 according to the predicted temperature of the blown air 82 supplied from the humidifying element 23. Control. Specific control contents will be described with reference to FIGS.

  FIG. 7 is a diagram illustrating an example of a functional configuration of the control unit 17 according to Embodiment 1 of the present invention. As shown in FIG. 7, the control unit 17 supplies an air conditioning coil capability change command based on various control commands and various data, and controls the capability of the air conditioning coil 22 based on the air conditioning coil capability change command. The control unit 17 includes a blown air control unit 201, a storage unit 202, a drainage cycle timing unit 203, and the like. As will be described in detail later, the blown air control unit 201 obtains the predicted temperature of the temperature of the blown air 82 when the operation mode of the ventilation air conditioner 1 is the heating mode, and the capability of the air conditioning coil 22 according to the predicted temperature. An air conditioning coil capacity change command for controlling

  The storage unit 202 stores various data, and supplies a predetermined reference value α to the blown air control unit 201, for example. Details of the reference value α will be described later. The drainage cycle timing unit 203 counts the drainage cycle of the humidifying element 23.

  The blown air control unit 201 includes a blown temperature predicting unit 211, a blown temperature comparing unit 212, a command determining unit 213, and the like. The blowing temperature predicting unit 211 determines the temperature of the blowing air 82 during the humidification stop of the humidifying element 23 based on the fixed value parameter related to the components of the ventilation air conditioner 1 and the variation value parameter related to the components of the ventilation air conditioner 1. Obtain the predicted temperature. The fixed value parameter related to the components of the ventilation air conditioner 1 and the variable value parameter related to the components of the ventilation air conditioner 1 may be included in various data, respectively.

  Here, the reason for obtaining the predicted temperature of the temperature of the blown air 82 during the humidification stop of the humidifying element 23 will be described. As described above, when humidification of the humidifying element 23 is stopped, the temperature of the blown air 82 fluctuates. Therefore, if the capability of the air conditioning coil 22 is appropriately controlled based on the temperature of the blown air 82 when the humidification of the humidifying element 23 is stopped, the fluctuation of the temperature of the blown air 82 is suppressed. Therefore, in order to appropriately control the capacity of the air conditioning coil 22, a predicted temperature of the blown air 82 during the humidification stop of the humidifying element 23 is obtained.

  The fixed value parameter regarding the component of the ventilation air conditioner 1 is a parameter regarding the total heat exchanger 21, for example. The variation value parameters related to the components of the ventilation air conditioner 1 are, for example, the measurement results of various sensors and the operating capacity of the air conditioning coil 22. The measurement results of the various sensors are, for example, the outside air temperature, the outside air humidity, the room temperature, and the room humidity. The outside air temperature is acquired from the measurement result of the outside air temperature sensor 43. The outside air humidity is acquired from the measurement result of the outside air humidity sensor 44. The room temperature is acquired from the measurement result of the room temperature sensor 41. The indoor humidity is acquired from the measurement result of the indoor humidity sensor 42.

  The operating capacity of the air conditioning coil 22 is obtained based on the rated capacity of the air conditioning coil 22 and the fluctuation amount of the air conditioning coil 22. The rated capacity of the air conditioning coil 22 is preset data. The capacity fluctuation of the air conditioning coil 22 is obtained based on the operation data of the air conditioning coil 22.

  The blowing temperature prediction unit 211 is a blowing temperature that is a predicted temperature of the blowing air 82 based on the parameters related to the total heat exchanger 21, the operating capacity of the air conditioning coil 22, the outside air temperature, the outside air humidity, the room temperature, and the room humidity. Ask for. Specifically, the blowing temperature predicting unit 211 is preset with input parameters including parameters relating to the total heat exchanger 21, operating capacity of the air conditioning coil 22, outside air temperature, outside air humidity, room temperature, and room humidity. By applying to the calculation formula for the temperature of the blown air 82, the blowout temperature which is an output parameter is obtained. The calculation formula for the temperature of the blown air 82 may be obtained by executing interpolation processing or the like by defining each parameter in advance in a table and assigning input parameters. In addition, since the blowing temperature prediction part 211 calculates | requires the blowing temperature which is the prediction temperature of the temperature of the blowing air 82 by calculation, the cost which provides the apparatus for sensing is reduced.

  The blowing temperature comparison unit 212 compares the blowing temperature obtained by the blowing temperature prediction unit 211 with a predetermined reference value α. The predetermined reference value α is set as the upper limit value of the temperature of the blown air 82. For example, the reference value α is set to a fixed value. For example, the reference value α is set to a target temperature of an air conditioner (not shown) that is directly connected to the supply air outlet 14 of the ventilation air conditioner 1.

  When the blowout temperature exceeds the reference value α as a result of the determination by the blowout temperature comparison unit 212, the command determination unit 213 reduces the ability of the air conditioning coil 22 of the ventilation air conditioner 1 to the minimum ability step that allows the thermo-on state to continue. Create a capability change command. The command determination unit 213 controls the capacity of the air conditioning coil 22 based on the created air conditioning coil capacity change command. On the other hand, when the blowout temperature does not exceed the reference value α as a result of the determination by the blowout temperature comparison unit 212, the command determination unit 213 continues the capacity of the air conditioning coil 22 of the ventilation air conditioner 1 at the current set value.

  As described above, when the blowing temperature exceeds the reference value α, the air conditioning coil 22 is controlled so that the capacity of the air conditioning coil 22 is reduced to the minimum capacity step at which the thermo-on state can be continued. Therefore, since the heating amount by which the air conditioning coil 22 heats the supply air 81 is suppressed, even if the ventilation air conditioner 1 is in the heating operation, the air conditioning coil 22 is not set to the thermo-off state, and the capacity of the air conditioning coil 22 is set. Suppress. Therefore, since the ventilation air conditioner 1 can suppress the state in which the temperature of the blown air 82 fluctuates even when the humidifying element 23 is drained, it can suppress a draft feeling to the user of the indoor room and can perform comfortable ventilation air conditioning. It can be carried out.

  Further, since the ventilation air conditioner 1 can continuously operate the air conditioning coil 22, the temperature of the blown air 82 is stabilized. Therefore, an air conditioner (not shown) directly connected to the air supply outlet 14 can be prevented from unexpectedly entering a thermo-on state or a thermo-off state, so that the air conditioning system is unstable in the same system system. Can be eliminated.

  In addition, when the operation mode of the ventilation air conditioner 1 is the air blowing mode, the control unit 17 is already in the thermo-off state, so even if the control unit 17 shifts to the regular drainage mode based on the drainage cycle, The temperature of 82 does not fluctuate rapidly. Moreover, although the air conditioner (not shown) directly connected to the supply air outlet 14 operates in conjunction with the ventilation air conditioner 1, it does not reach an unexpected thermo-on state or thermo-off state. Therefore, if the ventilation air conditioner 1 is in the ventilation mode, the ventilation air conditioner 1 does not need to control the capability of the air conditioning coil 22 according to the predicted temperature of the blown air 82 supplied from the humidifying element 23.

  Next, a process for controlling the capability of the air conditioning coil 22 in accordance with the predicted temperature of the blown air 82 supplied from the humidifying element 23 described above will be described with reference to FIG.

  FIG. 8 is a flowchart for explaining a control example of the ventilation air conditioner 1 according to Embodiment 1 of the present invention. As shown in FIG. 8, the process from step S14 to step S18 is an air conditioning coil capacity control process.

(Step S11)
The ventilation air conditioner 1 determines whether or not the drainage cycle has arrived. The ventilation air conditioner 1 progresses to step S12, when the drainage period comes. On the other hand, the ventilation air conditioner 1 returns to step S11, when the drainage cycle does not arrive.

(Step S12)
The ventilation air conditioner 1 starts a regular drainage mode. Specifically, the ventilation air conditioner 1 opens the drain valve 36 and discharges the water 80 filled in the humidifying element 23 through the drain pipe 32.

(Step S13)
The ventilation air conditioner 1 determines which operation mode it is. The ventilation air conditioner 1 returns to step S11, when it is in ventilation mode. On the other hand, when the ventilation air conditioner 1 is in the heating mode, the process proceeds to step S14. In other words, as described above, the ventilation air conditioner 1 shifts to a process for controlling the capacity of the air conditioning coil 22 based on the predicted blowing temperature when it is in the drainage mode and is operating in the heating mode. To do.

(Air conditioning coil capacity control processing)
(Step S14)
The ventilation air conditioner 1 calculates the blowing temperature when humidification is stopped. That is, the ventilation air conditioner 1 calculates the predicted temperature of the blown air 82 when humidification is stopped, and controls the capacity of the air conditioning coil 22 based on the predicted temperature.

(Step S15)
The ventilation air conditioner 1 acquires the reference value α. In the above description, the example in which the reference value α is stored in the storage unit 202 has been described. However, the reference value α is not particularly limited thereto. For example, the reference value α may be supplied from an external device (not shown) via a communication medium. Further, when the ventilation air conditioner 1 is set to the heating mode, the reference value α may be input from the remote controller 19.

(Step S16)
The ventilation air conditioner 1 determines whether or not the blowing temperature is higher than the reference value α. The ventilation air conditioner 1 progresses to step S17, when blowing temperature is large compared with the reference value (alpha). On the other hand, the ventilation air conditioner 1 progresses to step S18, when blowing temperature is not large compared with the reference value (alpha).

(Step S17)
The ventilation air conditioner 1 reduces the air conditioning coil capacity to the minimum. That is, the ventilation air conditioner 1 reduces the capacity step until the air conditioning coil 22 reaches the thermo-off state, and sets the minimum capacity step to maintain the thermo-on state of the air-conditioning coil 22.

(Step S18)
The ventilation air conditioner 1 continues the air conditioning coil capability as it is. That is, the ventilation air conditioner 1 continues the operation of the air conditioning coil 22 at the currently set capacity step.

(Step S19)
The ventilation air conditioner 1 determines whether or not the drainage time has ended. The ventilation air conditioner 1 returns to step S11, when drainage time is complete | finished. The drainage time is set for each drainage cycle. The relationship between the drainage time and the drainage cycle will be described later. On the other hand, the ventilation air conditioner 1 returns to step S13, when drainage time is not complete | finished.

  Here, the drain timing of the humidifying element 23 will be described with reference to FIG. FIG. 9 is a diagram illustrating an example of the drainage cycle of the humidifying element 23 and the drainage time for each drainage cycle in Embodiment 1 of the present invention. As shown in FIG. 9, the humidifying element 23 performs the draining operation for each drainage period over the drainage time. The drainage cycle and drainage time can be arbitrarily changed based on the material and specifications of the humidifying element 23 on which the ventilation air conditioner 1 is mounted.

  The drainage cycle may be drained once, for example, between 30 minutes and 300 minutes, based on extending the life of the humidifying element 23 and suppressing the amount of water used due to the number of drains. That is, the drainage cycle may be set in a time between 30 minutes and 300 minutes. Further, the drainage time may be set to a time between 5 minutes and 30 minutes, for example, considering the suppression of the temperature of the blown air 82 into the room.

  From the above description, the ventilation air conditioner 1 appropriately discharges the impurities of the water 80 accumulated in the humidifying element 23 and controls the heating of the air conditioning coil 22 at the time of discharging, so that the life of the humidifying element 23 is extended. Moreover, comfortable humidification ventilation can be performed by preventing fluctuation of the temperature of the blown air 82 when the humidifying element 23 is drained. That is, the ventilation air conditioner 1 can achieve both a long life of the humidifying element 23 and comfortable humidification ventilation.

  As described above, in the first embodiment, the total heat exchanger 21, the air conditioning coil 22 that heats the air supplied from the total heat exchanger 21, and the moisture permeable membrane tube 92 formed of a porous moisture permeable membrane. The humidifying element 23 for humidifying the air heated by the air conditioning coil 22 with water vapor evaporated from the moisture permeable membrane tube 92, the air conditioning coil 22, and the humidifying element 23 The controller 17 controls the water supply and the drainage of the humidifying element 23, and the temperature of the blown air 82 that is humidified and blown out by the humidifying element 23 varies with the drainage of the humidifying element 23. And when the control part 17 drains the humidification element 23, the ventilation air conditioner 1 which controls the capability of the air-conditioning coil 22 according to the estimated temperature of the temperature of the blowing air 82 is comprised. .

  Due to the above configuration, when the ventilation air conditioner 1 performs drainage control of the humidifying element 23 that naturally evaporates from the moisture permeable membrane, the blown air 82 is controlled. Therefore, the ventilation air conditioner 1 can suppress the temperature change of the blown air 82 while discharging impurities of the water 80 deposited on the humidifying element 23 that naturally evaporates from the moisture permeable membrane. Therefore, the ventilation air conditioner 1 can extend the life of the humidifying element 23 that spontaneously evaporates from the moisture permeable membrane, and can keep the indoor environment comfortable regardless of the outside air temperature.

  Moreover, in this Embodiment 1, the control part 17 of the blowing air 82 after the drainage start of the humidification element 23 is based on the outside temperature, the outside air humidity, the room temperature, the room humidity, and the operation capacity of the air conditioning coil 22. The predicted temperature of the temperature is obtained, and the capacity of the air conditioning coil 22 is controlled according to the predicted temperature.

  Moreover, in this Embodiment 1, the control part 17 reduces the capability of the air-conditioning coil 22 to the minimum, when predicted temperature exceeds the predetermined reference value (alpha).

  Therefore, the ventilation air conditioner 1 can particularly remarkably suppress the temperature change of the blown air 82 while discharging impurities of the water 80 deposited on the humidifying element 23 that naturally evaporates from the moisture permeable membrane. Therefore, the ventilation air conditioner 1 can particularly prolong the life of the humidifying element 23 that naturally evaporates from the moisture permeable membrane, and particularly keeps the indoor environment comfortable regardless of the outside air temperature. Can be done significantly.

Embodiment 2. FIG.
The difference from the first embodiment is that, in addition to controlling the capacity of the air conditioning coil 22, the air path formed in the ventilation air conditioner 1 is controlled.

  FIG. 10 is a diagram illustrating an example of a functional configuration of the control unit 17 according to the second embodiment of the present invention. As shown in FIG. 10, the blown air control unit 201 supplies a damper opening change command to the air path switching damper 25 in addition to the air conditioning coil capacity change command.

  FIG. 11 is a flowchart for explaining a control example of the ventilation air conditioner 1 according to Embodiment 2 of the present invention. The difference from the first embodiment is the damper opening degree fully opened process executed in the process of step S39 to the process of step S41. In addition, since the process of step S31-the process of step S38, and the process of step S42 are the same as the process of step S11 demonstrated in Embodiment 1, and the process of step S19, it abbreviate | omits about the description.

(Damper opening fully opened)
(Step S39)
The ventilation air conditioner 1 calculates the blowing temperature when humidification is stopped.

(Step S40)
The ventilation air conditioner 1 determines whether or not the blowing temperature is higher than the reference value α. The ventilation air conditioner 1 progresses to step S41, when blowing temperature is large compared with the reference value (alpha). On the other hand, the ventilation air conditioner 1 progresses to step S42, when blowing temperature is not large compared with the reference value (alpha). That is, after controlling the capacity of the air conditioning coil 22, the ventilation air conditioner 1 obtains the blowing temperature once again, and determines whether further control is necessary even if the capacity of the air conditioning coil 22 is controlled.

(Step S41)
The ventilation air conditioner 1 fully opens the damper. Specifically, the ventilation air conditioner 1 fully opens the opening of the air path switching damper 25. The ventilation air conditioner 1 performs an operation of switching to a bypass air passage that does not pass through the total heat exchanger 21 by fully opening the opening of the air passage switching damper 25. Therefore, since the blown air 82 is not totally heat-exchanged by the total heat exchanger 21, the temperature of the blown air 82 is substantially the same as the outside air temperature. Therefore, if the outside air temperature is low, the temperature of the blown air 82 can be further reduced.

  As described above, in the second embodiment, the air path switching damper 25 that controls the air flow path to the total heat exchanger 21 is further provided, and the control unit 17 determines that the air path when the predicted temperature exceeds the reference value α. The switching damper 25 is controlled to block the air flow path to the total heat exchanger 21. In other words, the ventilation air conditioner 1 bypasses the total heat exchanger 21 so that heat is not exchanged by setting the opening degree of the air path switching damper 25 to fully open and opening the air path switching damper 25 while the thermo-on state is continued. I do.

  Due to the above configuration, the ventilation air conditioner 1 controls the air path switching damper 25 to control the outside air even if the temperature of the blown air 82 exceeds the reference value α after the capacity of the air conditioning coil 22 is reduced to the minimum. Can be taken in without exchanging heat. Therefore, if the outside air temperature is low, the temperature of the blown air 82 can be further reduced. Specifically, in winter, the temperature of the air on the windward side of the air conditioning coil 22 is higher in bypass ventilation that does not allow heat exchange ventilation in the total heat exchanger 21 than in the case where heat exchange ventilation is performed in the total heat exchanger 21. , Generally lower. As a result, the temperature of the blown air 82 can be further reduced.

Embodiment 3 FIG.
The difference from the first embodiment and the second embodiment is that humidification is performed on the ventilation air conditioner 1 of another machine connected to the ventilation air conditioner 1 of the own machine.

  FIG. 12 is a diagram illustrating an example of a system configuration of a ventilation air conditioning system including the ventilation air conditioning apparatus 1 according to Embodiment 3 of the present invention as a component. As shown in FIG. 12, the ventilation air conditioning system is configured by connecting an indoor unit 2a, an indoor unit 2b, an indoor unit 2c, an outdoor unit 3, a ventilation air conditioning device 1a, and a ventilation air conditioning device 1b to the same refrigerant system 101. ing. The equipment connected to the same refrigerant system 101 uses the outdoor unit 3 in common. Therefore, devices connected to the same refrigerant system 101 can achieve energy saving as the entire system by adjusting the mutual air conditioning load. The indoor unit 2a, the indoor unit 2b, the indoor unit 2c, and the outdoor unit 3 constitute an air conditioner.

  When the indoor units 2a to 2c are not particularly distinguished, they are referred to as indoor units 2. The ventilation air conditioner 1a includes a control box 10a, and the control box 10a includes a control unit 17a. The ventilation air conditioner 1b includes a control box 10b, and the control box 10b includes a control unit 17b.

  When the ventilation air conditioner 1a and the ventilation air conditioner 1b are not particularly distinguished, they are referred to as a ventilation air conditioner 1. When the control box 10a and the control box 10b are not particularly distinguished, they are referred to as the control box 10. The control unit 17a and the control unit 17b will be referred to as the control unit 17 unless otherwise distinguished.

  A remote controller 19 a is connected to the ventilation air conditioner 1 a via the communication system 103. A remote controller 19 b is connected to the indoor unit 2 b via the communication system 103. A remote controller 19 c is connected to the indoor unit 2 c via the communication system 103. A remote controller 19 d is connected to the ventilation air conditioner 1 b via the communication system 103. When the remote controllers 19a to 19d are not particularly distinguished, they are referred to as remote controllers 19.

  The ventilation air conditioning system is configured by connecting the indoor unit 2, the ventilation air conditioning apparatus 1, and the remote controller 19 to the same communication system 103. Therefore, the devices connected to the same communication system 103 can grasp the operation state of the entire system by mutually communicating the operation data.

  Here, it is assumed that the indoor unit 2a is in the thermo-on state, the ventilation air conditioner 1a is in the thermo-on state, and the indoor unit 2c is in the thermo-off state. Further, the ventilation air conditioner 1b assumes that the temperature of the blown air 82 exceeds the reference value α even though the capacity of the air conditioning coil 22 is reduced to the minimum and the opening degree of the air path switching damper 25 is fully opened. To do.

  On the assumption of the above assumption, the ventilation air conditioner 1b searches the devices connected to the same refrigerant system 101 via the communication system 103 for the devices in which the air conditioning coil 22 is continuously operating in the thermo-on state. To do. For example, it is assumed that the ventilation air conditioner 1b has searched that the ventilation air conditioner 1a is operating in the thermo-on state. In this case, the ventilation air conditioner 1b switches the air conditioning coil 22 of the own device to the thermo-off state because the devices of the other devices other than the own device are in the thermo-on state. By performing such a series of operations, the ventilation air conditioner 1b further reduces the temperature of the blown air 82 blown out from the supply air outlet 14.

  However, when the temperature of the blown air 82 is lower than the predetermined reference value β when the air conditioning coil 22 is set in the thermo-off state, the ventilation air conditioner 1b drafts cold air into the indoor room user. In order to give a feeling, comfort may be given priority, and the thermo-off state of the air conditioning coil 22 may be prohibited.

  The reference value β is assumed to be the lower limit value of the blown air 82. Therefore, if the ventilation air conditioner 1 is controlled so that the temperature of the blown air 82 is maintained between the reference value β and the reference value α, the temperature of the blown air 82 is between the lower limit value and the upper limit value. Since the control is performed, it is possible to avoid both a draft feeling felt by the user in the indoor room, specifically, an unpleasant hot air draft feeling and an unpleasant cold wind draft feeling.

  Next, differences from the first embodiment and the second embodiment will be described with reference to FIGS. FIG. 13 is a diagram illustrating an example of a functional configuration of the control unit 17 according to Embodiment 3 of the present invention. As illustrated in FIG. 13, the blown air control unit 201 supplies a thermo-off command, a thermo-on command, and a thermo-off prohibition command to the air conditioning coil 22 and sets the thermo-on state and the thermo-off state of the air-conditioning coil 22.

  FIG. 14 is a flowchart for explaining a control example of the ventilation air conditioner 1 according to Embodiment 3 of the present invention. The difference from the first embodiment and the second embodiment is the same refrigerant system adjustment process in which the process of step S62 to the process of step S67 are executed. Since the process from step S51 to the process from step S61 and the process from step S68 are the same as those described above, description thereof will be omitted.

(Same refrigerant system adjustment processing)
(Step S62)
The ventilation air conditioner 1 calculates the blowing temperature when humidification is stopped.

(Step S63)
The ventilation air conditioner 1 determines whether or not the blowing temperature is higher than the reference value α. The ventilation air conditioner 1 progresses to step S64, when blowing temperature is large compared with the reference value (alpha). On the other hand, the ventilation air conditioner 1 progresses to step S68, when blowing temperature is not large compared with the reference value (alpha).

(Step S64)
The ventilation air conditioner 1 determines whether or not there is a device that is continuously operated with the thermo-on in the same refrigerant system. The ventilation air conditioner 1 progresses to step S65, when the apparatus which is continuing a driving | running | working by thermo-on by the same refrigerant system exists. On the other hand, the ventilation air conditioner 1 progresses to step S68, when the apparatus which is continuing operation | movement with thermo-on by the same refrigerant system does not exist.

(Step S65)
The ventilation air conditioner 1 determines whether or not the blowing temperature is smaller than the reference value β. The ventilation air conditioner 1 progresses to step S66, when blowing temperature is small compared with the reference value (beta). On the other hand, the ventilation air conditioner 1 progresses to step S67, when the blowing temperature is not small compared with the reference value (beta).

(Step S66)
The ventilation air conditioner 1 prohibits the air conditioning coil 22 of the own machine from being thermo-off.

(Step S67)
The ventilation air conditioner 1 switches its own air conditioning coil 22 to thermo-off.

  As described above, the ventilation air conditioner 1 reduces the ability of the air conditioning coil 22 to the minimum and opens the air path switching damper 25 so that the total heat exchange is not performed and the temperature of the blown air 82 does not decrease. If there is a device in the thermo-on state among the devices connected to the same refrigerant system 101, the humidification control is left to that device, and the air conditioning coil 22 of the own device is set in the thermo-off state. The temperature of the blown air 82 is reduced.

  As mentioned above, in this Embodiment 3, the control part 17 acquires the driving | operation information of the apparatus which humidifies the same room as the said ventilation air conditioner 1, and is smaller value compared with the reference value (alpha) with the predetermined reference value (beta). When the predicted temperature exceeds the reference value α while the device is humidifying, the air conditioning coil 22 is set to the thermo-off state, the air-conditioning coil 22 is in the thermo-off state, and the predicted temperature is the reference value β. If it is less, the thermo-on state of the air conditioning coil 22 is set.

  Due to the above configuration, the ventilation air conditioner 1 sets the air conditioning coil 22 to the thermo-off state when the humidifying element 23 is drained without affecting the temperature of the blown air 82 even if the air-conditioning coil 22 is not in the thermo-on state. Therefore, since the ventilation air conditioner 1 can suppress the operation of the outdoor unit 3 connected to the refrigerant system 101, the entire system can perform an operation with high energy saving performance.

  Moreover, if there exists an apparatus which humidifies among the apparatuses connected to the same refrigerant | coolant system | strain 101, such an apparatus will continue the operation | movement of a thermo-on state. Therefore, since the compressor with which the outdoor unit 3 connected to the same refrigerant | coolant system | strain 101 is provided does not transfer to restart operation mode, it can suppress reaching to an unstable behavior as the whole system. .

Embodiment 4 FIG.
The difference from the first to third embodiments is that the drainage cycle of the humidifying element 23 is adjusted.

  FIG. 15 is a diagram illustrating an example of a functional configuration of the control unit 17 according to Embodiment 4 of the present invention. As shown in FIG. 15, the control unit 17 further includes a drainage cycle first processing unit 221. The drainage cycle first processing unit 221 operates using the humidification operation start command as a trigger, and supplies a drainage cycle change command to the drainage cycle timing unit 203 based on the indoor humidity and the target humidity stored in the storage unit 202. To do. The humidification operation start command is a command for starting the humidification operation.

  FIG. 16 is a flowchart for explaining a control example of the ventilation air conditioner 1 according to Embodiment 4 of the present invention.

(Step S101)
The ventilation air conditioner 1 determines whether or not the humidification operation is started. When the humidification operation is started, the ventilation air conditioner 1 proceeds to step S102. On the other hand, the ventilation air conditioner 1 returns to step S101, when a humidification driving | operation is not started.

(Step S102)
The ventilation air conditioner 1 acquires indoor humidity.

(Step S103)
The ventilation air conditioner 1 acquires the target humidity.

(Step S104)
The ventilation air conditioner 1 determines whether or not the room humidity is lower than the target humidity. When the indoor humidity is smaller than the target humidity, the ventilation air conditioner 1 proceeds to step S105. If the room humidity is not smaller than the target humidity, the ventilation air conditioner 1 proceeds to step S106.

(Step S105)
The ventilation air conditioner 1 temporarily extends the drainage cycle and returns to step S102. That is, the ventilation air conditioner 1 extends the drainage timing.

(Step S106)
The ventilation air conditioner 1 restores the drainage cycle and ends the process.

  From the above description, the ventilation air conditioner 1 can prioritize the humidifying operation instead of the draining operation when the indoor humidity does not satisfy the target humidity after the start of the humidifying operation.

  Further, when the indoor humidity is sufficient, the ventilation air conditioner 1 restores the drainage timing, that is, restores the drainage cycle, whereby the regular drainage operation of the humidifying element 23 is performed. The life of the humidifying element 23 can be extended.

  Here, the degree of extending the drainage timing, that is, the degree of increasing the drainage cycle, is determined based on the time of supplying water to the humidifying element 23 or the time when the humidifying capacity of the humidifying element 23 is maximized. Such a time is set to 120 minutes to 180 minutes, for example. In addition, the numerical value demonstrated above is an example, Comprising: It is not limited to this. The above example is determined based on the performance of the humidifying element 23. In addition, the degree of extending the drainage cycle may be determined according to, for example, the surrounding environment and the installation environment of the ventilation air conditioner 1.

  As described above, in the fourth embodiment, when the indoor humidity is less than the predetermined target humidity, the control unit 17 extends the drainage cycle that determines the drainage timing for performing the draining operation of the humidifying element 23, and the indoor humidity is the target. When the humidity is higher than the humidity, the drainage cycle that determines the drainage timing for performing the drainage operation of the humidifying element 23 is restored.

  Due to the above configuration, the ventilation air conditioner 1 gives priority to the humidifying operation by extending the drainage timing when the room humidity is insufficient, that is, extending the drainage cycle. Can be reached.

Embodiment 5. FIG.
The difference from Embodiments 1 to 4 is that a waiting time is set at the start timing of the drainage cycle count.

  FIG. 17 is a diagram illustrating an example of a functional configuration of the control unit 17 according to the fifth embodiment of the present invention. As shown in FIG. 17, the control unit 17 includes a drainage cycle second processing unit 222. The drainage cycle second processing unit 222 operates using the humidification operation start command as a trigger, and issues a drainage cycle timing stop command to the drainage cycle timing unit 203 based on the indoor humidity and the waiting time stored in the storage unit 202. Supply.

  FIG. 18 is a flowchart for explaining a control example of the ventilation air conditioner 1 according to Embodiment 5 of the present invention.

(Step S121)
The ventilation air conditioner 1 determines whether or not the humidification operation is started. When the humidifying operation is started, the ventilation air conditioner 1 proceeds to step S122. On the other hand, the ventilation air conditioner 1 returns to step S121, when a humidification driving | operation is not started.

(Step S122)
The ventilation air conditioner 1 stops counting the drainage cycle.

(Step S123)
The ventilation air conditioner 1 acquires a waiting time.

(Step S124)
The ventilation air conditioner 1 starts counting time.

(Step S125)
The ventilation air conditioner 1 determines whether the waiting time has elapsed. If the waiting time has elapsed, the ventilation air conditioner 1 proceeds to step S126. On the other hand, the ventilation air conditioner 1 returns to step S125, when waiting time does not elapse.

(Step S126)
The ventilation air conditioner 1 starts counting the drainage cycle and ends the process.

  The ventilation air conditioner 1 can arbitrarily change the waiting time. The waiting time is arbitrarily changed according to, for example, the capacity of the humidifying element 23, that is, the performance of the humidifying element 23, and the space in which the humidifying element 23 is installed, that is, the installation environment of the humidifying element 23.

  When it is assumed that the priority is set to extend the life of the humidifying element 23 and the waiting time is set, considering the general humidifying element 23 and the use conditions of the general humidifying element 23, the waiting time is It is reasonable to set the value between 60 minutes and 120 minutes.

  In addition, when it assumes that the drainage cycle which is a regular drainage timing is set long, the ventilation air conditioner 1 does not need to stop the count of a drainage cycle.

  From the above description, the ventilation air conditioner 1 can prioritize the humidification operation by delaying the drainage operation after the start of the humidification operation.

  As described above, in the fifth embodiment, the control unit 17 stops the draining operation of the humidifying element 23 until a predetermined waiting time elapses after the operation of the humidifying element 23 is started.

  Due to the above configuration, the ventilation air conditioner 1 stops the counting of the drainage cycle leading to the draining operation of the humidifying element 23 at the start of operation, thereby bringing the indoor humidity close to an appropriate value, that is, the indoor humidity is set to the target humidity. Priority is given to the operation of approaching. Therefore, the ventilation air conditioner 1 can quickly reach the comfortable humidity in the room.

Embodiment 6 FIG.
The difference from the first embodiment to the fifth embodiment is that a plurality of methods are used as the drainage cycle control method.

  FIG. 19 is a diagram illustrating an example of a functional configuration of the control unit 17 according to Embodiment 6 of the present invention. As shown in FIG. 19, the control unit 17 includes a drainage cycle first processing unit 221 and a drainage cycle second processing unit 222.

  Therefore, the ventilation air conditioner 1 can prioritize the humidification operation instead of the drainage operation when the indoor humidity does not satisfy the target humidity after the start of the humidification operation. Moreover, the ventilation air conditioner 1 can prioritize the humidification operation by delaying the drainage operation after the start of the humidification operation. In other words, the ventilation air conditioner 1 discharges water according to the indoor environment determined by the room humidity and the like, and the operating state of the humidifying element 23 after the start of the humidifying operation, that is, the operating state determined by the operation start timing of the humidifying element 23. By controlling the cycle, the draining operation of the humidifying element 23 is controlled. Therefore, the ventilation air conditioner 1 can control the drain operation at an arbitrary timing according to various situations.

  As described above, in the sixth embodiment, the control unit 17 drains the draining operation of the humidifying element 23 according to at least the indoor environment determined by the indoor humidity and the operating state determined at least by the operation start timing of the humidifying element 23. Control timing.

  Due to the above configuration, the ventilation air conditioner 1 can arbitrarily change the periodic drainage cycle of the humidifying element 23.

  As mentioned above, the ventilation air conditioner 1 in Embodiment 1- Embodiment 6 can improve energy-saving property by suppressing the capability of the air-conditioning coil 22 at the time of regular drainage of the humidification element 23, and blown air 82 can be blown out at a comfortable temperature. Therefore, the ventilation air conditioner 1 is useful as a component of an air conditioning system formed by the same refrigerant system 101 as another air conditioning-related device, for example, an air conditioner configured by the indoor unit 2 and the outdoor unit 3. Is expensive. The ventilation air conditioner 1 is highly useful as a component of another air conditioning related device, for example, an air conditioning system formed by the same refrigerant system 101 as another ventilation air conditioner 1. In short, the ventilation air conditioner 1 is highly useful as a component of an air conditioning system formed by another air conditioning related device.

  1, 1a, 1b Ventilation air conditioner 2, 2a, 2b, 2c Indoor unit, 3 Outdoor unit, 9 Main body casing, 10, 10a, 10b Control box, 11 Exhaust air inlet, 12 Exhaust air outlet, 13 Inlet air inlet , 14 Supply air outlet, 17, 17a, 17b Control unit, 19, 19a, 19b, 19c, 19d Remote controller, 21 Total heat exchanger, 22 Air conditioning coil, 23 Humidifying element, 25 Air path switching damper, 26 For exhaust Blower, 27 Blower for air supply, 31 Water supply pipe, 32 Drain pipe, 35 Water supply valve, 36 Drain valve, 41 Indoor temperature sensor, 42 Indoor humidity sensor, 43 Outside air temperature sensor, 44 Outside air humidity sensor, 51 Refrigerant inlet / outlet, 60 Humidification Air path part, 61 Humidification air path upper part, 62 Humidification air path lower part, 71, 72, 73, 74 Broken line part, 80 Water, 81 Supply air, 82 Blow air, 91 Spacer, 92 Moisture permeable membrane tube, 93 Super water-repellent porous film material, 101 Refrigerant system, 103 Communication system, 201 Blow air control unit, 202 Storage unit, 203 Drain cycle Timekeeping unit, 211 blowing temperature prediction unit, 212 blowing temperature comparison unit, 213 command determination unit, 221 drainage cycle first processing unit, 222 drainage cycle second processing unit.

Claims (8)

A total heat exchanger,
An air conditioning coil for heating air supplied from the total heat exchanger;
A humidifying element provided with a bag formed of a porous moisture permeable membrane, water is supplied to the bag, and the air heated by the air conditioning coil with water vapor evaporated from the bag;
A controller for controlling the air conditioning coil, the water supply of the humidifying element, and the drainage of the humidifying element;
With
The temperature of the blown air that is humidified and blown out by the humidifying element fluctuates with the drainage of the humidifying element,
The controller is
In the case of draining the humidifying element, the ventilation air conditioner controls the capacity of the air conditioning coil in accordance with the predicted temperature of the blown air. The controller is
Based on the outside air temperature, the outside air humidity, the room temperature, the room humidity, and the operating capacity of the air conditioning coil, the predicted temperature of the temperature of the blown air after the start of drainage of the humidifying element is obtained
The ventilation air conditioner according to claim 1, wherein the capacity of the air conditioning coil is controlled according to the predicted temperature. The controller is
The ventilation air conditioner according to claim 2, wherein when the predicted temperature exceeds a predetermined first reference value, the capacity of the air conditioning coil is reduced to a minimum. Further comprising a damper for controlling a flow path of air to the total heat exchanger;
The controller is
4. The ventilation air conditioner according to claim 3, wherein when the predicted temperature exceeds the first reference value, the damper is controlled to block an air flow path to the total heat exchanger. 5. The controller is
Acquire operation information of equipment that humidifies the same room as the ventilation air conditioner,
Setting a predetermined second reference value to a value smaller than the first reference value;
If the predicted temperature exceeds the first reference value while the device is performing humidification, the air conditioning coil is set to a thermo-off state,
The ventilation air conditioner according to claim 4, wherein when the air conditioning coil is in a thermo-off state and the predicted temperature is less than the second reference value, the air-conditioning coil is set in a thermo-on state. The controller is
If the room humidity is below the predetermined target humidity,
Extend the drainage cycle that determines the timing of drainage to perform the drainage operation of the humidifying element,
When the indoor humidity is above the target humidity,
The ventilation air conditioner according to any one of claims 1 to 5, wherein a drainage cycle in which a drainage timing for performing a drainage operation of the humidifying element is determined is restored. The controller is
The ventilation air conditioner according to any one of claims 1 to 5, wherein a drainage operation of the humidifying element is stopped until a predetermined waiting time elapses after starting the operation of the humidifying element. . The controller is
The drainage timing of the draining operation of the humidifying element is controlled according to at least the indoor environment determined by the indoor humidity and the operation state determined by at least the operation start timing of the humidifying element. The ventilation air conditioner described.

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