JP2011196567A - Bathroom drying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bathroom drying device free from accumulation of water due to dripping of water, which forms a hotbed of mold and bacteria and causes odor, by treating dew condensation water generated in heat exchange without dripping it.SOLUTION: This bathroom drying device DM includes bathroom exhaust flow channels 115, 116a for sucking the air from an exhaust suction opening 109, bathroom air supply flow channels 113a, 114 for sucking the air from an air supply inlet Ia to distribute the air into a bathroom, and a heat exchanger 101 exchanging heat between the air in the bathroom flowing in the bathroom exhaust flow channels 115, 116 and the outside air flowing in the bathroom air supply flow channels 113, 114. Ventilation in the bathroom air supply flow channels 113a, 114 is stopped before stopping ventilation in the bathroom exhaust flow channels 115, 116 in a termination phase of a bathroom drying operation, and the ventilation in the bathroom exhaust flow channels is continued in the stopped state to execute an element drying operation for drying the heat exchanger for a prescribed time.

Description

  The present invention relates to a bathroom drying apparatus.

  It is becoming common to install a bathroom dryer that also serves as a ventilation device in a house. Such a bathroom drying apparatus is provided with an air supply fan, an exhaust fan, a heater, and the like in the apparatus body. The outside air is sucked into the apparatus body by the air supply fan, and the outside air is supplied to the bathroom while being heated by the heater. By doing so, warm air is circulated in the bathroom. And if clothes are dried in a bathroom, the temperature of clothes will rise with the warm air which circulates, and can thereby evaporate the water | moisture content of clothes actively. In addition, since the temperature of the walls, ceilings, floors, etc. in the bathroom rises due to the circulating warm air, moisture (water droplets) adhering to the walls, ceilings, floors, etc. can be actively evaporated, and drying in the bathroom Can also ventilate the bathroom.

  By the way, in the above-mentioned bathroom drying apparatus, warm bathroom air containing evaporated water is sucked into the apparatus main body by an exhaust fan and exhausted as it is outside the building, so the heat energy of the bathroom air is wasted. There is a drawback.

  Therefore, a heat exchange element is provided in the main body case, and the heat exchange element is used to exchange heat between the bathroom air exhausted by the exhaust fan and the outside air sucked by the air supply fan. There has been proposed a bathroom drying device that collects the thermal energy of the internal air and returns it to the bathroom (see Patent Document 1 below).

  However, the technique described in Patent Document 1 below has a problem that when dew condensation occurs in the heat exchange element, dew condensation water generated by the dew condensation accumulates in the apparatus main body. That is, the air in the bathroom is hotter and humid than the outside air, and when the heat exchange element performs a heat exchange with the outside air, if the air is rapidly cooled by the outside air, the moisture contained in the bathroom air is heated. Condensation is caused by the exchange element, and dew condensation water generated by the condensation is accumulated in the apparatus main body.

  Therefore, Patent Document 2 below proposes a bathroom drying apparatus for solving the problem of condensation. The technology described in the following Patent Document 2 includes an exhaust fan that sucks air inside the bathroom and discharges it outside the building, an air supply fan that sucks outside air outside the building and supplies it to the bathroom, an exhaust fan, and an air supply fan This is a bathroom drying apparatus comprising a drive means for rotating the air and a heat exchange element for exchanging heat between the air in the bathroom sucked by the exhaust fan and the outside air sucked by the air supply fan. This bathroom drying device forms a drain outlet at the bottom of the exhaust chamber provided on the downstream side of the heat exchange element along the flow of air in the bathroom, and moisture in the bathroom air is condensed during heat exchange. The condensed water is discharged out of the apparatus main body through a drain discharge port.

JP-A-1-249100 JP-A-2005-98613

  In the above-mentioned conventional bathroom drying apparatus, the amount of condensed water generated by condensation is not so large, and the condensed water that is dripped is continuously generated. For this reason, when a drain outlet is formed at the bottom of the exhaust chamber and the condensed water is discharged from the drain outlet, all the condensed water does not flow without stagnation, and water does not flow around the bottom of the exhaust chamber or the drain outlet. May remain. If the dew condensation water remains in the bottom of the exhaust chamber or around the drain outlet in this manner, it becomes a hotbed where mold and germs are generated, which may cause odor.

  The present invention has been made in view of such problems, and its purpose is to perform a drying operation while exchanging heat between the air in the bathroom and the outside air, and the condensed water generated during the heat exchange. It is an object of the present invention to provide a bathroom drying apparatus that can be treated without dripping, and that does not generate a puddle of dripping water that may cause mold and other germs.

  In order to solve the above problems, a bathroom drying apparatus according to the present invention is a bathroom drying apparatus that sucks air from the bathroom and dries the bathroom, and sucks air from the bathroom and discharges it to the outside. And a bathroom air supply passage that sucks outside air from the outside and supplies it to the bathroom, an exhaust ventilation means for causing an air flow in the bathroom exhaust passage, and an air supply and ventilation means for causing an air flow in the bathroom supply passage. Heat exchange between the heater for raising the temperature of the air supplied into the bathroom, the air in the bathroom exhausted through the bathroom exhaust passage, and the outside air supplied through the bathroom air supply passage Controlling the heat exchange element, the exhaust ventilation means and the air supply ventilation means to adjust the air flowing in the bathroom exhaust flow path and the bathroom air supply flow path, and driving the heater to air in the bathroom Control hand to control the heating He has a, and. The control means controls the exhaust ventilation means and the air supply ventilation means while driving the heater to heat the air in the bathroom, and allows air to flow through the bathroom exhaust flow path and the bathroom supply air flow path. Thus, a bathroom drying operation for performing heat exchange by the heat exchange element is executed. Further, the control means stops the ventilation in the bathroom air supply channel at the end stage of the bathroom drying operation and stops the ventilation in the bathroom exhaust channel, and the bathroom exhaust flow in the stopped state. The element drying operation for drying the heat exchange element is performed for a predetermined time by continuing ventilation in the road.

  According to the bathroom drying apparatus of the present invention, the bathroom drying operation in which heat is exchanged by the heat exchange element by flowing air through the bathroom exhaust passage and the bathroom air supply passage while heating the air in the bathroom with the heater. Therefore, it is possible to effectively use the bathroom by transferring the heat in the bathroom from the exhaust to the supply air, and to perform an efficient bathroom drying operation. More specifically, warm and humid air warmed by the heater passes through the bathroom exhaust passage, while cold outside air passes through the bathroom exhaust passage, so that heat is transferred from the warm exhaust to the cold supply air in the heat exchange element. Is passed. As a result, warm and moist air in the bathroom exhaust flow path is cooled in the heat exchange element and condensation occurs. Therefore, in the present invention, the element drying operation is executed at the end of the bathroom drying operation to dry and remove the dew condensation water generated during the bathroom drying operation. Specifically, before stopping the ventilation in the bathroom exhaust channel at the end of the bathroom drying operation, the ventilation in the bathroom air supply channel is stopped, and in the stopped state, the ventilation in the bathroom exhaust channel is stopped. It is supposed to continue. By doing so, since cold outside air is not supplied to the heat exchange element, it is possible to prevent generation of new condensed water in the heat exchange element. Further, since warm air is supplied to the heat exchange element through the bathroom exhaust passage, evaporation of condensed water already generated in the heat exchange element can be promoted to dry the inside of the heat exchange element. Therefore, it is possible to provide a bathroom drying apparatus that does not generate a puddle of dripping water that may cause mold and other germs as a hotbed and odor.

  In the bathroom drying apparatus according to the present invention, a temperature sensor that detects an outdoor air temperature is provided in the bathroom air supply channel, and the control means detects a temperature detected by the temperature sensor during the execution of the bathroom drying operation. If the temperature is equal to or higher than a predetermined temperature, it is preferable not to execute the element drying operation.

  The bathroom drying apparatus according to the present invention is configured to evaporate the condensed water in the heat exchange element by performing the element drying operation so as not to generate a puddle due to the dropped water. However, since the element drying operation is performed mainly for element drying, it is preferable to avoid the operation as much as possible and contribute to energy saving when the heat exchange element is not wet. Therefore, in this preferable aspect, when the temperature detected by the temperature sensor during execution of the bathroom drying operation is equal to or higher than the predetermined temperature, it is determined that the outside air is not cold enough to cause condensation, and the element drying operation is not performed. It is supposed to be.

  Further, in the bathroom drying apparatus according to the present invention, a time measuring unit that measures a time for performing the bathroom drying operation is provided, and the control unit is configured to perform the element drying operation when the time measured by the time measuring unit is equal to or less than a predetermined time. It is also preferable not to execute.

  As described above, since the element drying operation is performed mainly for element drying, it is preferable to avoid the operation as much as possible and contribute to energy saving when the heat exchange element is not wet. Therefore, in this preferred embodiment, when the time for performing the bathroom drying operation is equal to or shorter than the predetermined time, it is determined that heat exchange is not performed to the extent that condensation occurs, and the element drying operation is not performed.

  Further, in the bathroom drying apparatus according to the present invention, a temperature sensor for detecting an outdoor air temperature is provided in the bathroom air supply channel, and the control means is configured such that the temperature detected by the temperature sensor is a first temperature. The second execution which is the execution time of the element drying operation when the temperature detected by the temperature sensor is the second temperature lower than the first temperature than the first execution time which is the execution time of the element drying operation. It is also preferable to perform the element drying operation so that the time becomes longer.

  As described above, in the bathroom drying apparatus according to the present invention, the element drying operation is performed to evaporate the condensed water in the heat exchange element so as not to generate a puddle of dripped water. On the other hand, since the element drying operation is mainly performed for element drying, it is preferable to adjust the operation time according to the wetness of the heat exchange element. Therefore, in this preferred embodiment, when the temperature of the heat exchange element is lower than the first temperature, it is determined that the condensed water is attached to the heat exchange element as compared with the case of the first temperature, and the element is dried. The second execution time, which is the operation execution time, is set longer than the first execution time. Thereby, the operation time of the heat exchange element drying operation can be adjusted according to the amount of condensed water adhering to the heat exchange element.

  Further, in the bathroom drying apparatus according to the present invention, the control means changes an air flow rate of the air flowing in the bathroom exhaust passage during the element drying operation according to an operation mode executed after the bathroom drying operation. Is also preferable.

  In this preferred embodiment, in the element drying operation executed at the end of the bathroom drying operation, the air flow rate of the air flowing through the bathroom exhaust passage is changed according to the operation mode executed after the bathroom drying operation. Condensed water adhering to the heat exchange element can be evaporated while suppressing the influence on the operation after drying.

  Further, in the bathroom drying apparatus according to the present invention, when it is a ventilation operation that exhausts air from the bathroom that is executed after the bathroom drying operation, the control means includes the interior of the bathroom exhaust passage during the element drying operation. It is also preferable to change the flow rate of the flowing air so as to be larger than that in the bathroom drying operation.

  Ventilation operation is to ventilate the air in the bathroom, so if it is a ventilation operation that is performed after the bathroom drying operation, there is little need to consider the temperature drop in the bathroom in the element drying operation, It is preferable to shift to ventilation operation as soon as possible. Therefore, in this preferred embodiment, by changing the ventilation rate of the air flowing in the bathroom exhaust passage during the element drying operation so as to be larger than that during the bathroom drying operation, the drying rate of the heat exchange element can be increased, The time for drying operation can be shortened and an early transition can be made to ventilation operation.

  Further, in the bathroom drying apparatus according to the present invention, when the heating operation for driving the heater is performed after the bathroom drying operation, the control means is configured to move the interior of the bathroom exhaust passage during the element drying operation. It is also preferable to change the flow rate of the flowing air so as to be smaller than that in the bathroom drying operation.

  Since the heating operation warms the air in the bathroom, if the heating operation is performed after the bathroom drying operation, it is necessary to avoid a temperature drop in the bathroom as much as possible in the element drying operation. Therefore, in this preferred embodiment, the air flow rate in the bathroom exhaust flow path during the element drying operation is changed so as to be smaller than that during the bathroom drying operation, so that the element can be used without escaping the warm air in the bathroom as much as possible. Drying operation can be performed.

  Further, in the bathroom drying apparatus according to the present invention, as another flow path independent of the bathroom exhaust flow path, a second bathroom exhaust flow path for sucking air from the bathroom and discharging it to the outside is provided, and the control means includes: When performing a ventilation operation for exhausting air from the bathroom after the bathroom drying operation, after performing the heat exchange element drying operation using the bathroom exhaust channel, the ventilation operation is switched to the second bathroom exhaust channel. It is also preferable to carry out.

  Ventilation operation ventilates the air in the bathroom, so if it is a ventilation operation that is performed after the bathroom drying operation, the exhaust through the heat exchange element is rounded up as soon as possible to reduce pressure loss. It is preferable to shift to a ventilation operation. Therefore, in this preferred embodiment, a second bathroom exhaust flow path is provided as a bathroom exhaust flow path that does not pass through the heat exchange element, and the bathroom exhaust flow path is used when performing a ventilation operation for exhausting air from the bathroom after the bathroom drying operation. After performing the heat exchange element drying operation, the ventilation operation is performed by switching to the second bathroom exhaust passage. Therefore, after the heat exchange element has been dried, the exhaust gas that does not pass through the heat exchange element can be exhausted, and a ventilation operation that does not suffer pressure loss due to the heat exchange element can be performed.

  According to the present invention, it is possible to perform a drying operation while performing heat exchange between the air in the bathroom and the outside air, and it is possible to perform the treatment without dripping the condensed water generated during the heat exchange, It is possible to provide a bathroom drying apparatus that does not cause a puddle of dripping water, which can cause mold and other germs, and cause odor.

It is a perspective view which shows the external appearance of the bathroom drying apparatus which is embodiment of this invention. It is a figure which shows the structure of the bathroom drying apparatus which is embodiment of this invention, Comprising: It is a figure which shows the operation | movement in the case of drying operation. It is a block diagram which shows the control structure of the bathroom drying apparatus which is embodiment of this invention. It is a figure which shows the structure of the bathroom drying apparatus which is embodiment of this invention, Comprising: It is a figure which shows the operation | movement in the case of a regular ventilation driving | operation. It is a figure which shows the structure of the bathroom drying apparatus which is embodiment of this invention, Comprising: It is a figure which shows the operation | movement at the time of ventilation independent driving | operation. It is a figure which shows the structure of the bathroom drying apparatus which is embodiment of this invention, Comprising: It is a figure which shows the operation | movement in the case of heating operation. It is a flowchart which shows operation | movement of the element drying driving | operation of the bathroom drying apparatus which is embodiment of this invention. It is a flowchart which shows operation | movement of the element drying driving | operation of the bathroom drying apparatus which is embodiment of this invention. It is a flowchart which shows operation | movement of the element drying driving | operation of the bathroom drying apparatus which is embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  FIG. 1 is a perspective view showing an appearance of a bathroom drying apparatus DM according to an embodiment of the present invention. The bathroom drying device DM is attached to the ceiling of the bathroom and is configured to be able to execute various operation modes such as drying operation, ventilation operation, ventilation single operation, and heating operation (each operation mode). Will be described later in detail). As shown in FIG. 1, the bathroom drying apparatus DM is configured by a circulation unit 10 and an exhaust unit 20. The circulation unit 10 is provided with an air supply inlet Ia. The air supply inlet Ia is an air inlet that is constructed so as to communicate with other rooms (for example, a bathroom) other than the bathroom or outside air.

  The exhaust unit 20 is provided with another chamber introduction port Ib, another chamber introduction port Ic, and an exhaust port Ea. The other room inlet Ib is an air inlet that is constructed so as to communicate with other rooms (for example, a bathroom) other than the bathroom. The other room introduction port Ic is an air introduction port constructed so as to communicate with a room (for example, a toilet) other than the bathroom and a room different from the room where the other room introduction port Ib communicates. . The exhaust port Ea is an air exhaust port constructed so as to communicate with the outside air.

  The configuration of the bathroom drying device DM is shown in FIG. FIG. 2 is a diagram illustrating a configuration of the bathroom drying apparatus DM, and is a diagram illustrating an operation during a clothes drying operation (bathroom drying operation). As shown in FIG. 2, the circulation unit 10a of the bathroom drying apparatus DM includes a heat exchanger 101, a circulation fan 102, an air supply fan 104 as an air supply ventilation means, a heater 106, and an exhaust damper 112a. Is provided.

  The air supply inlet Ia communicates with the bathroom air supply channel 113a, the bathroom air supply channel 113a is connected to the bathroom air supply channel 114, and an air supply outlet 111 is provided at the end of the bathroom air supply channel 114. ing. An air supply fan 104 is disposed in the bathroom air supply flow path 114, and when the air supply fan 104 is driven, air is sucked from the air supply introduction port Ia and passes through the bathroom air supply flow paths 113a and 114 to be an air supply outlet. Air is blown from 111 into the bathroom.

  Bathroom exhaust passages 115 and 116a are provided so as to intersect with the bathroom air supply passages 113a and 114, respectively. The bathroom exhaust passage 115 is for sucking air from the exhaust suction port 109 communicating with the inside of the bathroom, and is connected to the bathroom exhaust passage 116a. The bathroom exhaust passage 116 a communicates with the exhaust unit 20 through the exhaust communication port 110. An exhaust damper 112a is disposed in the bathroom exhaust passage 115. When the exhaust damper 112a is opened, air flows from the bathroom exhaust passage 116a to the exhaust unit 20, and when the exhaust damper 112a is closed, the exhaust unit is discharged from the bathroom exhaust passage 116a. It is comprised so that the flow of the air to 20 may be interrupted | blocked.

  A heat exchanger 101 (heat exchange element) is disposed in a region where the bathroom air supply channels 113a and 114 and the bathroom exhaust channels 115 and 116a intersect. The heat exchanger 101 has a flow path for allowing air flowing in from the bathroom air supply flow path 113a to flow out to the bathroom air supply flow path 114, and a flow path for allowing air flowing in from the bathroom exhaust flow path 115 to flow out to the bathroom exhaust flow path 116a. It is formed so as to intersect in layers. Accordingly, heat exchange can be performed between the air flowing through the bathroom air supply channels 113a and 114 and the air flowing through the bathroom exhaust channels 115 and 116a.

  A second bathroom exhaust channel 116b is formed in the circulation unit 10a. One end of the second bathroom exhaust passage 116b is connected to the bathroom exhaust passage 116a, and the other end is connected to the second exhaust suction port 119, and communicates with the inside of the bathroom through the second exhaust suction port 119. . A second exhaust damper 118 is disposed in the vicinity of the second exhaust suction port 119 of the second bathroom exhaust flow path 116b.

  The circulation unit 10 a is provided with a circulation inlet 107 and a circulation outlet 108. The circulation inlet 107 and the circulation outlet 108 are connected by a bathroom circulation channel 117. A circulation fan 102 is disposed in the bathroom circulation channel 117, and is configured to suck air in the bathroom from the circulation suction port 107 by driving the circulation fan 102 and blow it out from the circulation outlet 108 into the bathroom. ing. The circulation outlet 108 is provided with a heater 106 so that the air blown from the circulation outlet 108 can be heated by energizing the heater 106.

  The exhaust unit 20 is provided with an exhaust fan 201 as exhaust ventilation means. The exhaust fan 201 is provided in the exhaust passage 203. The exhaust passage 203 is formed to connect the other chamber introduction ports Ib and Ic and the exhaust communication port 110 to the exhaust port Ea. When the exhaust fan 201 is driven, air is sucked from the other chambers through the other chamber introduction ports Ib and Ic and discharged from the exhaust port Ea. If the exhaust damper 112a is open, the air is sucked from the bathroom exhaust passage 115 by driving the exhaust fan 201 and is discharged from the exhaust port Ea through the bathroom exhaust passage 116a downstream thereof.

Since the bathroom drying device DM shown in FIG. 2 is in the clothes drying operation, the exhaust damper 112a is open, the second exhaust damper 118 is closed, and the heater 106 is energized. The circulation fan 102, the air supply fan 104, and the exhaust fan 201 are each rotated at a predetermined rotational speed. As a result, 90 m ³ / h of air is sucked from the air supply inlet Ia and supplied to the bathroom air supply channel 113a.

The air sent into the bathroom air supply channel 113a is heat-exchanged by the heat exchanger 101 to receive heat, and then blown out from the supply air outlet 111 into the bathroom via the bathroom air supply channel 114. The air blown out from the supply air outlet 111 into the bathroom is 90 m ³ / h. By driving the circulation fan 102, 150 m ³ / h of air is sucked from the circulation suction port 107, heated by the heater 106, and then blown out from the circulation outlet 108 into the bathroom. The air blown out from the circulation outlet 108 into the bathroom is 150 m ³ / h.

As the exhaust fan 201 is driven, 90 m ³ / h of air is sucked from the exhaust suction port 109 and is sent to the exhaust flow path 203 via the bathroom exhaust flow paths 115 and 116a. Depending on the driving of the exhaust fan 201, 105 m ³ / h of air is sucked from the other chamber inlets Ib and Ic and sent to the exhaust passage 203. The air sent into the exhaust passage 203 is exhausted from the exhaust port Ea to the outdoors by the exhaust fan 201. The air discharged from the exhaust port Ea to the outdoors is 195 m ³ / h.

  As shown in FIG. 2, when the clothes drying operation is performed, the heater 106 is energized while the exhaust damper 112a is open, and the circulation fan 102, the supply fan 104, and the exhaust fan 201 Since it is necessary to rotate at the number of rotations, a predetermined control signal is output to each unit from the control unit CU as the control means, and as a result, each unit executes a predetermined operation.

  FIG. 3 shows a control configuration of the bathroom drying apparatus DM. As shown in FIG. 3, a predetermined operation signal is input from the remote controller RP to the control unit CU. Specifically, the remote control RP includes a switch for starting and ending the operation of the bathroom drying apparatus DM, as well as “clothing drying operation”, “normal ventilation operation”, “cool air operation”, “ventilation single operation”, “heating operation”. The operation unit for designating the operation mode of the bathroom drying apparatus DM is provided.

  The control unit CU performs an operation for designating the operation mode on the remote controller RP, receives an operation mode instruction signal output from the remote controller RP, and outputs an instruction signal to each unit. Specifically, an instruction signal is output from the control unit CU to the circulation fan 102, the supply fan 104, the exhaust fan 201, the exhaust damper 112a, and the second exhaust damper 118, and the circulation fan 102, the supply fan 104, the exhaust The fan 201, the exhaust damper 112a, and the second exhaust damper 118 perform a predetermined operation based on the instruction signal. Furthermore, a temperature sensor St is provided for measuring the outdoor temperature outside the house where the clothes dryer DM is installed, and a signal output from the temperature sensor St is input to the control unit CU. The CU is configured to acquire the outside air temperature.

  FIG. 4 shows a state of the bathroom drying device DM in the case of the continuous ventilation operation. The constant ventilation operation ventilates the bathroom and other rooms other than the bathroom. As shown in FIG. 4, the exhaust damper 112 a is closed, and the heater 106 is not energized. On the other hand, the second exhaust damper 118 is open, the circulation fan 102 and the air supply fan 104 are stopped, and the exhaust fan 201 is rotating at a predetermined rotational speed.

As a result, by driving the exhaust fan 201, 53 m ³ / h of air is sucked from the second exhaust suction port 119 and sent to the exhaust flow path 203 via the bathroom exhaust flow paths 116b and 116a. Depending on the driving of the exhaust fan 201, 52 m ³ / h of air is sucked from the other chamber introduction ports Ib and Ic and sent to the exhaust passage 203. The air sent into the exhaust passage 203 is exhausted from the exhaust port Ea to the outdoors by the exhaust fan 201. The air discharged from the exhaust port Ea to the outdoors is 105 m ³ / h.

  In the case of the constant ventilation operation shown in FIG. 4, when the circulation fan 102 is rotated, a cool air operation state is obtained. In this cool breeze operation, air outside the bathroom is sucked in from the vent (formed by a girdle plate) below the bathroom doorway, and the sucked air circulates in the bathroom by the rotation of the circulation fan 102. Thus, the user can feel cool.

FIG. 5 shows the state of the bathroom drying device DM in the case of ventilation-only operation. Ventilation single operation is to ventilate only other rooms except the bathroom. As shown in FIG. 5, the exhaust damper 112a and the second exhaust damper 118 are closed, and the heater 106 is not energized. The circulation fan 102 and the air supply fan 104 are stopped, and the exhaust fan 201 is rotating at a predetermined rotational speed. As a result, by driving the exhaust fan 201, 105 m ³ / h of air is sucked from the other chamber introduction ports Ib and Ic and sent to the exhaust passage 203. The air sent into the exhaust passage 203 is exhausted from the exhaust port Ea to the outdoors by the exhaust fan 201. The air discharged from the exhaust port Ea to the outdoors is 105 m ³ / h.

FIG. 6 shows the state of the bathroom drying device DM in the heating operation. Heating operation is to ventilate other rooms while heating the bathroom. As shown in FIG. 6, the heater 106 is energized with the exhaust damper 112a and the second exhaust damper 118 closed. The circulation fan 102 and the exhaust fan 201 are rotated at a predetermined rotation speed, and the air supply fan 104 is stopped. As a result, by driving the exhaust fan 201, 105 m ³ / h of air is sucked from the other chamber introduction ports Ib and Ic and sent to the exhaust passage 203. The air sent into the exhaust passage 203 is exhausted from the exhaust port Ea to the outdoors by the exhaust fan 201. The air discharged from the exhaust port Ea to the outdoors is 105 m ³ / h. By driving the circulation fan 102, 150 m ³ / h of air is sucked from the circulation suction port 107, heated by the heater 106, and then blown out from the circulation outlet 108 into the bathroom. The air blown out from the circulation outlet 108 into the bathroom is 150 m ³ / h.

  Subsequently, from the continuous ventilation operation mode (see FIG. 4), the clothes drying operation mode (see FIG. 2), the heating operation mode (see FIG. 6), and the cool air operation mode are executed, and then the heat exchanger 101 is dried. A procedure for performing the element drying operation mode will be described with reference to FIGS. 7, 8, and 9. 7-9 is a flowchart which shows operation | movement of the element drying operation | movement of the bathroom drying apparatus DM which is embodiment of this invention, Comprising: A series of flow is divided | segmented and shown.

  In step S01 of FIG. 7, it is determined whether a predetermined operation mode has been selected. If the predetermined operation mode is selected, the process proceeds to any one of steps S02, S12, and S20. If the predetermined operation mode is not selected, the determination in step S01 is repeated. If the clothes drying operation mode is selected, the process proceeds to step S02. If the heating operation mode is selected, the process proceeds to step S12. If the cool air operation mode is selected, the process proceeds to step S20.

  In step S02 of the clothes drying operation mode, the exhaust damper 112a is opened. In step S03 following step S02, the second exhaust damper 118 is closed. In step S04 following step S03, the air supply fan 104 is driven. In step S05 following step S04, the heater 106 is energized and the circulation fan 102 is driven. In step S06 following step S05, the timer count of the control unit CU is started. In step S07 following step S06, the outside air temperature that is the supply air temperature to the bathroom drying apparatus DM is measured. When the process of step S07 ends, the process proceeds to step S08.

  In step S08, it is determined whether or not the operation mode is changed. If the operation mode is not changed, the process proceeds to step S09. If the operation mode is changed, the process proceeds to step S30 shown in FIG.

  In step S09, it is determined whether the timer that started counting in step S06 has timed out. If the time is not up, the process returns to step S07, and if the time is up, the process proceeds to step S10.

  In step S10, energization to the heater 106 is stopped and the driving of the circulation fan 102 is also stopped. In step S11 following step S10, driving of the air supply fan 104 is stopped. When the process of step S11 ends, the process proceeds to the process of step S30 shown in FIG.

  In step S12 of the heating operation mode, the exhaust damper 112a is closed. In step S13 following step S12, the second exhaust damper 118 is closed. In step S14 following step S13, the driving of the air supply fan 104 is stopped. In step S15 following step S14, the heater 106 is energized and the circulation fan 102 is driven. In step S16 following step S15, the timer count of the control unit CU is started. When the process of step S16 ends, the process proceeds to step S17.

  In step S17, it is determined whether or not the operation mode is changed. If the operation mode is not changed, the process proceeds to step S18. If the operation mode is changed, the process proceeds to step S30.

  In step S18, it is determined whether the timer that started counting in step S16 has expired. If the time is not up, the process returns to step S17. If the time is up, the process proceeds to step S19.

  In step S19, energization of the heater 106 is stopped and the driving of the circulation fan 102 is also stopped. When the process of step S19 ends, the process proceeds to step S30 shown in FIG.

  In step S20 in the cool wind operation mode, the exhaust damper 112a is closed. In step S21 following step S20, the second exhaust damper 118 is opened. In step S22 following step S21, the driving of the air supply fan 104 is stopped. In step S23 following step S22, the circulation fan 102 is driven. In step S24 following step S23, the power supply to the heater 106 is stopped. In step S25 following step S24, the timer count of the control unit CU is started. When the process of step S25 ends, the process proceeds to step S26.

  In step S26, it is determined whether or not the operation mode is changed. If the operation mode is not changed, the process proceeds to step S27. If the operation mode is changed, the process proceeds to step S30.

  In step S27, it is determined whether the timer that started counting in step S25 has expired. If the time has not expired, the process returns to step S26, and if the time has expired, the process proceeds to step S28.

  In step S28, energization of the heater 106 is stopped and the driving of the circulation fan 102 is also stopped. When the process of step S28 ends, the process proceeds to step S30 shown in FIG.

  In step S30 shown in FIG. 8, it is determined which operation mode is the operation mode to be ended. When the operation mode to be ended is the clothing drying operation mode (when processing has continued from step S11 in FIG. 7), the process proceeds to step S31. When the operation mode to be ended is other than the clothes drying operation mode (when processing has continued from step S19 or step S28 in FIG. 7), the process proceeds to step S33.

  In step S31, the operation duration time of the operation mode to be ended is determined. If the operation duration time of the operation mode to be ended is 30 minutes or less, step S32 is skipped and the process proceeds to step S33. If the operation duration time of the operation mode to be ended exceeds 30 minutes, the process proceeds to step S32.

  In step S32, the supply air temperature to the bathroom drying device DM is determined based on the outside air temperature measured in step S07. If the supply air temperature to the bathroom dryer DM is 25 ° C. or lower, the process proceeds to step S40. If the supply air temperature to the bathroom drying device DM exceeds 25 ° C., the process proceeds to step S40 shown in FIG.

  In step S33, it is determined whether the timer that started counting in step S06, step S16, or step S25 has timed out. If the time is not up, the process returns to step S18 or step S27. If the time is up, the process proceeds to step S34.

  In step S34, the exhaust damper 112a is closed. In step S35 following step S34, the second exhaust damper 118 is opened. After the processing of step S34 and step S35, the operation returns to the operation in the constant ventilation operation mode (see FIG. 4).

  FIG. 9 shows the main procedure of the element drying operation of the bathroom drying apparatus DM. In step S40 shown in FIG. 9, it is further determined whether or not there is a mode selected as the next operation mode and, if there is a selected mode, whether it is the heating operation mode or the cool air operation mode. If there is no mode selected as the next operation mode, the process proceeds to step S41. If the heating operation mode is selected, the process proceeds to step S46. If the cool breeze operation mode is selected, the process proceeds to step S57.

  If there is no mode selected as the next operation mode, the routine returns to the constant ventilation operation mode. Therefore, in step S41, a drying timer in the element drying operation mode is set, and the timer count of the control unit CU is started. The temperature detected by the temperature sensor St is higher than the first execution time ts that is the execution time of the element drying operation mode when the temperature detected by the temperature sensor St is the first temperature (for example, 20 ° C.). The second execution time is set to the first execution time so that the second execution time, which is the execution time of the element drying operation mode when the second temperature is lower than the first temperature (for example, 15 ° C. or 5 ° C.). The time ts is set to 1.2 times (when the second temperature is 15 ° C.) or 1.5 times (when the second temperature is 5 ° C.).

  In step S42 following step S41, the rotational speed of the exhaust fan 201 is changed. In this case, since the continuous ventilation operation mode, which is a ventilation operation, is executed after the clothes drying operation mode (bathroom drying operation mode), the number of rotations of the exhaust fan 201 in the clothes drying operation mode is increased, and the bathroom exhaust flow path is increased. 115 and 116a and the amount of air flowing through the exhaust passage 203 are adjusted to increase. The element drying operation for drying the heat exchanger 101 is started by setting and operating in this way (step S43).

  In step S44 following step S43, it is further determined whether or not the operation mode has been changed. If the operation mode is further changed, the process proceeds to step S70. If the operation mode is not further changed, the process proceeds to step S45.

  In step S45, it is determined whether the timer that started counting in step S41 has expired. If the time is not up, the process returns to step S43, and if the time is up, the process returns to step S34.

  In step S46 when the heating operation mode is selected as the next operation mode, the exhaust damper 112a is opened, and in step S47 following step S46, the second exhaust damper 118 is closed. In step S48 following step S47, the heater 106 is energized and the circulation fan 102 is driven. In step S49 following step S48, a drying timer in the element drying operation mode is set, and the timer count of the control unit CU is started.

  In step S50 following step S49, the rotational speed of the exhaust fan 201 is changed. In this case, since the heating operation mode is executed after the clothes drying operation mode (bathroom drying operation mode), the number of rotations of the exhaust fan 201 during the clothes drying operation mode is decreased, and the bathroom exhaust passages 115 and 116a and the exhaust are exhausted. It adjusts so that the quantity of the air which flows through the flow path 203 may decrease. The element drying operation for drying the heat exchanger 101 is started by setting and operating in this way (step S51).

  In step S52 following step S51, it is determined whether or not the operation mode has been changed. If the operation mode has been changed, the process proceeds to step S70. If the operation mode has not been changed, the process proceeds to step S53.

  In step S53, it is determined whether the timer started counting in step S49 has expired. If the time is not up, the process returns to step S51. If the time is up, the process proceeds to step S54.

  In step S54, the rotational speed of the exhaust fan 201 is changed. Specifically, the rotation speed of the exhaust fan 201 changed in step S50 is returned to the rotation speed in the normal heating operation mode. In step S55 following step S54, the exhaust damper 112a is closed. When the process of step S55 ends, the process proceeds to step S17.

  In step S57 when the cool air operation mode is selected as the next operation mode, the exhaust damper 112a is opened, and in step S58 following step S57, the second exhaust damper 118 is closed. In step S59 following step S58, the circulation fan 102 is driven. In step S60 following step S59, energization to the heater 106 is stopped. In step S61 following step S60, the drying timer in the element drying operation mode is set, and the timer count of the control unit CU is started.

  In step S62 following step S61, the rotational speed of the exhaust fan 201 is changed. In this case, since the cool air operation mode is executed after the clothes drying operation mode (bathroom drying operation mode), the number of rotations of the exhaust fan 201 during the clothes drying operation mode is increased, and the bathroom exhaust passages 115 and 116a and the exhaust air are exhausted. It adjusts so that the quantity of the air which flows through the flow path 203 may increase. The element drying operation for drying the heat exchanger 101 is started by setting and operating in this way (step S63).

  In step S64 following step S63, it is further determined whether or not the operation mode has been changed. If the operation mode has been changed, the process proceeds to step S70. If the operation mode has not been changed, the process proceeds to step S65.

  In step S65, it is determined whether the timer that started counting in step S61 has expired. If the time has not expired, the process returns to step S63, and if the time has expired, the process proceeds to step S66.

  In step S66, the rotational speed of the exhaust fan 201 is changed. Specifically, the rotation speed of the exhaust fan 201 changed in step S62 is returned to the rotation speed in the normal heating operation mode. In step S67 following step S66, the second exhaust damper 118 is opened. In step S68 following step S67, the exhaust damper 112a is closed. When the process of step S68 ends, the process returns to step S26.

  In step S70, it is determined whether the changed operation mode is the clothes drying operation mode. If the changed operation mode is the clothes drying mode, the process returns to step S02. If the changed operation mode is not the clothes drying mode, the process returns to step S40.

DM: Bathroom dryer CU: Control unit (control means)
Ia: Supply air introduction port Ib: Other room introduction port Ic: Other room introduction port Ea: Exhaust port 10: Circulation unit 20: Exhaust unit 101: Heat exchanger (heat exchange element)
102: Circulating fan 104: Air supply fan (supply air ventilation means)
106: Heater 107: Circulation inlet 108: Circulation outlet 109: Exhaust inlet 110: Exhaust communication port 111: Supply air outlet 112a: Exhaust damper 113a: Bathroom supply passage 114: Bathroom supply passage 115: Bathroom exhaust flow Channel 116a: Bathroom exhaust channel 116b: Second bathroom exhaust channel 117: Bathroom circulation channel 118: Second exhaust damper 119: Second exhaust suction port 201: Exhaust fan (exhaust ventilation means)
203: Exhaust flow path

Claims (8)

A bathroom drying device that sucks air from inside the bathroom and dries the inside of the bathroom,
A bathroom exhaust passage that draws air from inside the bathroom and discharges it to the outside;
A bathroom air supply flow path for sucking outside air from the outside and supplying it to the bathroom;
Exhaust ventilation means for causing an air flow in the bathroom exhaust passage,
An air supply and ventilation means for causing an air flow in the bathroom air supply channel;
A heater for raising the temperature of air supplied into the bathroom;
A heat exchange element that exchanges heat between the air in the bathroom exhausted through the bathroom exhaust passage and the outside air supplied through the bathroom air supply passage;
The exhaust ventilation means and the air supply ventilation means are controlled to adjust the air flowing through the bathroom exhaust flow path and the bathroom air supply flow path, and the heater is driven to heat the air in the bathroom. Control means for
The control means includes
While heating the air in the bathroom by driving the heater, the exhaust ventilation means and the supply air ventilation means are controlled to flow air through the bathroom exhaust flow path and the bathroom supply air flow path. Perform a bathroom drying operation to exchange heat with the exchange element,
Before stopping the ventilation in the bathroom exhaust channel at the end of the bathroom drying operation, the ventilation in the bathroom air supply channel is stopped, and the ventilation in the bathroom exhaust channel is continued in the stopped state. Then, the element drying operation which dries the said heat exchange element is performed for the predetermined time, The bathroom drying apparatus characterized by the above-mentioned. In the bathroom air supply channel, a temperature sensor for detecting outdoor air temperature is provided,
2. The bathroom drying apparatus according to claim 1, wherein the control unit does not execute the element drying operation when a temperature detected by the temperature sensor is equal to or higher than a predetermined temperature during the execution of the bathroom drying operation. Providing a time measuring means for measuring the time for performing the bathroom drying operation;
2. The bathroom drying apparatus according to claim 1, wherein the control unit does not execute the element drying operation when a time measured by the time measuring unit is equal to or shorter than a predetermined time. In the bathroom air supply channel, a temperature sensor for detecting outdoor air temperature is provided,
The control means is configured such that the temperature detected by the temperature sensor is lower than the first temperature than the first execution time that is the execution time of the element drying operation when the temperature detected by the temperature sensor is the first temperature. The bathroom drying apparatus according to claim 1, wherein the element drying operation is performed such that a second execution time that is an execution time of the element drying operation when the second temperature is low is increased.   The said control means changes the ventilation volume of the air which flows through the inside of the said bathroom exhaust flow path at the time of the said element drying operation according to the driving | running aspect performed after the said bathroom drying operation. Bathroom drying equipment. When it is a ventilation operation that exhausts from the bathroom is performed after the bathroom drying operation,
6. The bathroom drying apparatus according to claim 5, wherein the control means changes an air flow rate of air flowing through the bathroom exhaust passage during the element drying operation so as to be larger than that during the bathroom drying operation. . When the heating operation for driving the heater is performed after the bathroom drying operation,
6. The bathroom drying apparatus according to claim 5, wherein the control means changes an air flow rate of the air flowing in the bathroom exhaust passage during the element drying operation so as to be smaller than that during the bathroom drying operation. . As another flow path independent of the bathroom exhaust flow path, a second bathroom exhaust flow path for sucking air from the bathroom and discharging it to the outside is provided.
The control means switches to the second bathroom exhaust flow channel after performing the heat exchange element drying operation using the bathroom exhaust flow channel when performing a ventilation operation for exhausting air from the bathroom after the bathroom drying operation. The bathroom drying apparatus according to claim 1, wherein the ventilation operation is performed.

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