JP2007187334A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an economical living space free from heat exchange loss by controlling ventilation air quantity according to the state of change in indoor temperature or humidity. <P>SOLUTION: A fan motor unit 11 capable of sucking outdoor air and exhausting indoor air, a heat exchange unit 4, and a suction and exhaust duct 14 extending outdoors are mounted within a casing arranged in a ceiling or wall within a room. A control part 8 for controlling the heat exchange unit 4 and the fan motor unit 11 is mounted also therein. The indoor temperature and humidity are detected by a temperature sensor 9 and a humidity sensor 10 connected to the control part. The fan motor unit 11 comprises a DC motor, and can accurately adjust the ventilation air quantity to an intended ventilation air quantity, and the indoor temperature and humidity are adjusted to target values determined by a remote control 2 by driving the fan motor unit in linkage with the heat exchange unit 4. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air conditioner that secures an appropriate amount of ventilation air according to the use of air-conditioning equipment and environmental changes indoors and outdoors.

  Conventionally, this type of air conditioner is known as a ventilation fan that is equipped with a DC motor and finely corrects the ventilation airflow (see, for example, Patent Document 1).

  Hereinafter, the ventilation fan will be described with reference to FIG.

As shown in the figure, the fan motor unit 101 is a DC fan motor equipped with a DC motor 102, and its discharge port 103 is connected to a duct 104. The rotation of the DC motor 102 is controlled by the energization control means 108, and the target rotation speed is instructed by the air volume instruction means 105. An approximate expression of applied voltage-rotation speed for operating the DC fan motor unit 101 with an air flow specified in advance for each ambient temperature is stored in the calculation formula storage means 106, and the atmosphere detection means 107 is used for the DC fan motor unit 101. The ambient temperature is detected, the operating rotational speed is detected from the change time of the gate signal of the energization control means 108, the necessary rotational speed is obtained from the approximate expression stored in the calculation formula storage means 106, and the obtained rotational speed and While comparing the operating rotational speed, the voltage applied to the DC motor 102 is changed to control the air volume of the DC fan motor 101.
Japanese Unexamined Patent Publication No. 2003-143887 (page 9, FIG. 7)

  Although such a conventional control method can adjust the ventilation air volume with respect to a change in the room temperature, there is a problem in that the room air that has been air-conditioned is forcibly exhausted when used together with the air-conditioning apparatus. . Therefore, the heat exchange loss in the room is also large, and improvement is required. Further, ventilation with respect to humidity is not taken into consideration, and it is also required to provide a comfortable indoor environment by adjusting temperature and humidity.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and an object thereof is to provide an economical living space that can control the ventilation air volume according to the situation with respect to indoor temperature and humidity changes and has no heat exchange loss. It is said.

  In order to achieve the above object, an air conditioner of the present invention has a casing disposed on a ceiling or wall of a room, a suction port disposed in the casing and sucking the room air into the casing, and the suction A fan motor having an exhaust port for discharging air sucked from the port to the outside; a heat exchanger disposed in the casing for exchanging heat with the air; and air exchanged by the heat exchanger A target outlet temperature setting means for setting the target temperature of the room air, a target humidity setting means for setting the target humidity, and an outside humidity detection means for detecting the outdoor humidity, In this configuration, the fan motor is controlled to adjust the ventilation air flow so that the indoor humidity is close to the indoor target humidity set by the target humidity setting means.

  By this means, the fan motor can be driven in conjunction with the heat exchanger, and an air conditioner capable of bringing the indoor humidity close to the target humidity by adjusting the ventilation air volume can be obtained.

  Further, another means of the air conditioner of the present invention is configured to control the fan motor and adjust the ventilation air volume so as to bring the room temperature close to the indoor temperature and the target temperature set by the target temperature setting means. It is.

  By this means, the fan motor can be driven in conjunction with the heat exchanger, and an air conditioner that can bring the indoor temperature closer to the target temperature by adjusting the balance between the temperature control of the heat exchanger and the ventilation air volume is obtained. It is done.

  Another means of the air conditioner of the present invention is configured to reduce the ventilation air volume for a predetermined time after the target temperature and humidity are set by the target humidity setting means and the target temperature setting means.

  When it is desired to lower the room temperature and increase the humidity by this means, ventilation can be performed after giving priority to the cooling function of the heat exchanger in which the humidity increases, so that it can be brought close to the target temperature and humidity efficiently. Therefore, it is possible to adjust the indoor environment economically.

  Another means of the air conditioner of the present invention is configured to increase the ventilation air volume for a predetermined time after the target temperature and humidity are set by the target humidity setting means and the target temperature setting means.

  By this means, when it is desired to lower the target temperature in the room and lower the target humidity in summer when the weather is good, it is possible to efficiently bring the target temperature and humidity closer to the target temperature and humidity by using the ventilation function. Therefore, it is possible to adjust the indoor environment more economically.

  Further, the other means of the air conditioner of the present invention is configured to change to a predetermined ventilation air volume when the room humidity has a difference of a certain value or more with respect to the target humidity after the target humidity is set and a certain time has elapsed. It is what.

  When the target humidity is not reached no matter how much forced ventilation is performed, such as when there is no difference in the relative humidity between the room and the outdoors, this method minimizes the amount of ventilation to save unnecessary fan motor consumption, making it economical. Ventilation can be performed.

  Further, the other means of the air conditioner of the present invention is to control the heat exchanger and control the indoor temperature if the indoor humidity has a difference of a certain value or more with respect to the target humidity after the target humidity is set and a certain time has elapsed. It is set as the structure which adjusts.

  When the target humidity is not reached by forced ventilation alone, such as when there is no difference between the indoor and outdoor relative humidity by this means, the indoor temperature is controlled by the action of the heat exchanger to relatively adjust the indoor humidity. . According to the present invention, it is possible to provide a comfortable living environment by suppressing wasteful consumption of the fan motor and adjusting the humidity to be constant.

  Further, the other means of the air conditioner of the present invention is configured to change to a predetermined ventilation air volume when the target temperature is set and the actual temperature has a difference of a certain value or more after the lapse of a certain time. It is what.

  If the target humidity does not reach the target humidity no matter how much forced ventilation is performed, such as when there is no difference between the indoor and outdoor temperatures, the ventilation air volume is minimized to reduce wasteful fan motor consumption and economical ventilation. Can be done.

  In addition, the other means of the air conditioner of the present invention is to prioritize the target temperature when there is a difference of a certain value or more with respect to the target temperature / humidity after the target temperature / humidity is set and a certain time has elapsed. The room temperature is adjusted to the target temperature by controlling the heat exchanger and fan motor.

  By this means, when there is no difference between the indoor and outdoor temperature and humidity, it is possible to control the indoor temperature and humidity so that they do not converge with respect to the target value and the drift operation of the heat exchanger and the fan motor does not occur.

  Further, another means of the air conditioner of the present invention is configured to include an air volume detecting means, and to control the fan motor so that the ventilation air volume becomes constant when the air volume detecting means detects the air volume fluctuation.

  By this means, it is possible to solve problems such as unnecessary ventilation and insufficient ventilation air volume by feedback of ventilation air volume.

  In addition, another means of the air conditioner of the present invention includes an outside air temperature detecting means for detecting the outdoor temperature, and when there is a difference between the indoor temperature and the outdoor temperature above a certain value, the natural ventilation volume and the ventilation air volume are combined. The indoor ventilation volume is adjusted to be constant.

  By this means, energy saving of the fan motor and the heat exchanger can be realized.

  Another means of the air conditioner of the present invention is provided with an outside humidity detecting means for detecting outdoor humidity, and when the indoor humidity and the outdoor humidity have a difference of a certain value or more, the ventilation air volume is changed to a predetermined ventilation air volume. It is set as the structure which carries out.

  By taking in outdoor air by this means and using it, it is possible to adjust indoor humidity without relying on a heat exchanger.

  In addition, another means of the air conditioner of the present invention is configured to change the ventilation air volume to a predetermined ventilation air volume in order to prevent condensation in the room when the indoor temperature is low and the humidity is high.

  By this means, it is possible to prevent the room from condensing in winter when the outdoor humidity is low and the indoor humidity is high.

  In the present invention, a casing disposed on the ceiling or wall of a room, a suction port that is disposed in the casing and sucks the indoor air into the casing, and an exhaust that discharges air sucked from the suction port to the outside A fan motor having a mouth; a heat exchanger disposed in the casing for exchanging heat with air; a blow-out port for blowing air exchanged by the heat exchanger into the room; A target temperature setting means for setting the target temperature, a target humidity setting means for setting the target humidity, and an outdoor humidity detection means for detecting the outdoor humidity, and the indoor target humidity set by the target humidity setting means It is an air conditioner that controls the fan motor and adjusts the ventilation air volume so that the humidity in the room is close, and controls the heat exchanger and fan motor in a balanced manner, It is possible to secure the indoor environment and the required ventilation without exchange loss.

  An air conditioner according to a first aspect of the present invention includes a casing disposed on a ceiling or wall of a room, a suction port that is disposed in the casing and sucks the room air into the casing, and is sucked from the suction port. A fan motor having an exhaust port for discharging the generated air to the outdoors, a heat exchanger arranged in the casing for exchanging heat with the air, and a blower for blowing out the air heat-exchanged by the heat exchanger into the room A target temperature setting means for setting a target temperature of indoor air outside the outlet and the casing, a target humidity setting means for setting the target humidity, and an outside humidity detecting means for detecting the outdoor humidity, the target humidity The fan motor is controlled and the ventilation air volume is adjusted so that the room humidity approaches the room target humidity set by the setting means.

  According to the present invention, the indoor humidity varies due to the operation of the heat exchanger, whereas the indoor humidity can be controlled by adjusting the ventilation air volume of the fan motor. Further, it is possible to gradually decrease the ventilation air volume as it approaches the target humidity, and to adjust the ventilation air volume so that the indoor humidity becomes substantially equal to the target humidity.

  As a result, when the room humidity increases due to the use of a cooling device or cooking in a pot, it is possible to provide a comfortable indoor environment by changing the air inside and outside the room. Further, by effectively utilizing the fan motor, the operation of the heat exchanger can be reduced, and the operation with less heat exchange loss can be performed.

  The invention according to claim 2 is characterized in that the ventilation air volume is adjusted by controlling the fan motor so as to bring the room temperature closer to the room target temperature set by the target temperature setting means. It is an air conditioner.

  According to the present invention, the indoor temperature fluctuates due to the operation of the heat exchanger, whereas the indoor air temperature can be supplementarily adjusted by changing the ventilation air volume. Further, the ventilation air volume can be gradually decreased as the temperature approaches the target temperature, and the ventilation air volume can be adjusted so that the room temperature becomes substantially equal to the target temperature.

  As a result, when cooking using fire in the room and the room temperature becomes higher than the outdoor temperature, the room temperature can be lowered efficiently by combining the air conditioning equipment and the ventilation function. Moreover, an indoor environment with little heat loss can be provided by adjusting the ventilation air volume so as not to waste the air that is constantly cooled at the target temperature.

  The invention according to claim 3 is characterized in that after the target temperature and humidity are set by the target humidity setting means and the target temperature setting means, the ventilation air volume is reduced for a predetermined time. It is.

  In the present invention, after the target temperature / humidity is set by the target temperature setting means, while the heat exchanger is operating until the target temperature / humidity is reached, the ventilation air flow is set so as not to waste the air that has been air-conditioned. Can be kept to a minimum appropriate amount.

  If you want to lower the indoor target temperature and increase the target humidity, it is more economical to prioritize the cooling function of the heat exchanger that increases the humidity before ventilating, so that the target temperature and humidity can be brought closer to efficiency. It is possible to adjust the indoor environment.

  The air conditioner according to claim 1 or 2, wherein the ventilation air volume is increased for a predetermined time after the target temperature and humidity are set by the target humidity setting means and the target temperature setting means. It is.

  In the present invention, after the indoor target temperature and humidity are set, the indoor environment is brought close to the target temperature and humidity by increasing the ventilation capacity and using it together with the heat exchanger for a predetermined time.

  If you want to lower the target temperature in the room and lower the target humidity, such as when you cook in a pot, you can adjust the indoor environment more economically because using the ventilation function can bring the target temperature and humidity more efficiently. Is possible.

  The invention according to claim 5 is characterized in that, after the target humidity is set and a certain time elapses, the room humidity is changed to a predetermined ventilation air volume when there is a difference of a certain value or more with respect to the target humidity. The air conditioner according to 1, 2, 3 or 4.

  In the present invention, when it is determined that forced ventilation does not approach the target humidity after a predetermined time has elapsed since the target humidity is set, the ventilation air volume is kept to a minimum appropriate amount.

  When the target humidity is not reached no matter how much forced ventilation is performed, such as when there is no difference between the indoor and outdoor relative humidity, the ventilation volume is minimized and the ventilation is made economically to reduce unnecessary fan motor consumption. It is possible.

  According to the sixth aspect of the present invention, when the target humidity is set and a certain time elapses and the room humidity is different from the target humidity by a certain value or more, the heat exchanger is controlled to adjust the room temperature. The air conditioner according to claim 1, 2, 3, or 4.

  In this invention, when it is judged that forced ventilation does not approach the target humidity after a certain time has elapsed since the target humidity was set, the heat exchanger is operated to adjust the room temperature to adjust the relative humidity to the target humidity. It is.

  When the target humidity cannot be achieved by forced ventilation alone, such as when there is no difference in the relative humidity between the room and the room, the room temperature is controlled by the action of the heat exchanger to relatively adjust the room humidity. According to the present invention, it is possible to provide a comfortable living environment by suppressing wasteful consumption of the fan motor and adjusting the humidity to be constant.

  The invention according to claim 7 is characterized in that, after a predetermined time elapses after the target temperature is set, if the actual temperature has a difference of a predetermined value or more with respect to the target temperature, it is changed to a predetermined ventilation air volume. The air conditioner according to 1, 2, 3, 4, 5 or 6.

  In the present invention, when it is determined that forced ventilation does not approach the target temperature after a lapse of a certain time from the setting of the target temperature, the ventilation air volume is limited to a minimum appropriate amount.

  If the target humidity is not reached no matter how much forced ventilation is performed, such as when there is no difference between the indoor and outdoor temperatures, the ventilation air volume should be minimized and economically ventilated to reduce unnecessary fan motor consumption. Is possible.

  According to the eighth aspect of the present invention, when the target temperature / humidity is set and a certain time elapses, if the indoor temperature / humidity has a difference of a certain value or more with respect to the target temperature / humidity, the target temperature is given priority, and The air conditioner according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the motor is controlled to adjust the room temperature to a target temperature.

  In the present invention, when it is determined that the target temperature and the target humidity are not compatible from the relationship between the indoor temperature and the relative humidity after a predetermined time has elapsed since the target temperature and humidity were set, the heat exchanger giving priority to the target temperature is prioritized. And controls the fan motor.

  According to the present invention, when there is no difference between indoor and outdoor temperature and humidity, it is possible to control the indoor temperature and humidity so that they do not converge with respect to the target value so that the drift operation of the heat exchanger and the fan motor does not occur.

  The invention according to claim 9 is provided with an air volume detecting means, and when the air volume detecting means detects an air volume variation, the fan motor is controlled so that the ventilation air volume becomes constant. The air conditioner according to 4, 5, 6, 7 or 8.

  In the present invention, the ventilation air volume is constantly monitored by a sensor or the like, and for example, it is possible to prevent the ventilation air volume from fluctuating when the torque characteristics change due to heat generated by the fan motor itself to be controlled.

  According to the present invention, it is possible to solve problems such as unnecessary ventilation and insufficient ventilation airflow due to feedback of the ventilation airflow.

  The invention according to claim 10 is provided with an outside air temperature detecting means for detecting the outdoor temperature, and when there is a difference between the indoor temperature and the outdoor temperature above a certain value, the natural ventilation amount and the ventilation air volume are combined to control the indoor ventilation amount. The air conditioner according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, wherein the air conditioner is adjusted to be constant.

  In the present invention, proper ventilation air volume in a room is ensured by utilizing natural ventilation generated by a temperature difference between the room and the outdoors. It is also possible to adjust the room temperature by taking in outdoor air.

  By this invention, energy saving of the fan motor and the heat exchanger can be expected.

  The invention according to claim 11 is provided with an outdoor humidity detecting means for detecting outdoor humidity, and when there is a difference between the indoor humidity and the outdoor humidity above a certain value, the ventilation air volume is changed to a predetermined ventilation air volume. The air conditioner according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10.

  In this invention, the indoor target humidity is compared with the outdoor target humidity.When the outdoor humidity is close to the target humidity, the ventilation air volume is increased to take in a large amount of outdoor air, and when the outdoor humidity is far from the target humidity, the ventilation air volume is increased. Minimizes the inflow of air outside the room.

  According to the present invention, it is possible to adjust indoor humidity without depending on a heat exchanger by taking in outdoor air and using it.

  The invention according to claim 12 is characterized in that when the indoor temperature is low and the humidity is high, the ventilation air volume is changed to a predetermined ventilation air volume to prevent condensation in the room. The air conditioner described in 5, 6, 7, 8, 9, 10 or 11 is used.

  In the present invention, when the relative humidity is higher than the room temperature in the room, the room air is discharged to the outside so that the room humidity does not exceed the saturated water vapor curve, and the dry air flows into the room.

  According to the present invention, it is possible to prevent the room from condensing in winter when the outdoor humidity is low and the indoor humidity is high.

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

(Embodiment 1)
As shown in FIGS. 1-7, the air conditioning unit 1 with which the heat exchange unit 4 and the ventilation unit 3 were united is attached to the indoor wall surface. In addition to the air conditioning unit 1, a target humidity setting means for setting a target temperature and humidity in the room and a remote controller 2 as a target temperature setting means are attached to the wall surface.

  The heat exchange unit 4 has a suction port 5 for sucking indoor air, a heat exchanger 120, and an air supply port 7 for supplying heat exchanged air into the room. The ventilation unit 3 has an exhaust port on the outside of the casing. 6 and a ventilation unit air supply port 12. A fan motor unit 11 capable of intake of outdoor air and exhaust of indoor air and a supply / exhaust duct 14 extending to the outside are mounted inside the casing. A control unit 8 that controls the heat exchanger 120 and the fan motor unit 11 is attached to the air conditioning unit 1, and the indoor temperature and humidity are measured by a temperature sensor 9 and a humidity sensor 10 connected to the control unit 8. The fan motor 13 is constituted by a DC motor, and can be accurately changed and adjusted to a target ventilation air volume. In the present embodiment, the heat exchanger 120 is an inverter type, and the room temperature is controlled to be constant at the target temperature.

  In the above configuration, the fan motor unit 11 of the ventilation unit 3 is always operated to ventilate the room so as to satisfy the ventilation frequency required by the Building Standard Law. The remote controller 2 is also provided with a ventilation automatic / manual switch 15 for switching to manual operation so that the user can adjust the ventilation air volume. Further, the remote controller 2 is also provided with a non-heat exchange mode switch 16 that does not use the heat exchanger 120. When the control unit 8 receives this non-heat exchange mode switch 16 input, even if the temperature and humidity are set, the heat exchanger 120 is not used, and the indoor temperature and humidity are controlled only by the ventilation unit 3.

  The operation of the air conditioner according to Embodiment 1 will be described based on the flowchart of FIG. First, when the room temperature and humidity are set by the remote controller 2, the information is first transmitted to the control unit 8. The controller 8 first determines in step 20 whether the non-heat exchange mode is set. If it is determined that the non-heat exchange mode is not set, the indoor temperature measured by the temperature sensor 9 is compared with the set target temperature in step 21, and if the indoor temperature is determined to be low, the air temperature is determined in step 22. It is determined whether or not the heat exchanger 120 is being set for cooling operation. Whether or not the cooling operation is being performed can be determined based on whether or not the cooling operation is selected by the operation switch 17 of the remote controller 2. If it is determined in step 22 that the heat exchanger 120 is in the cooling operation, the compressor compression rate is changed by inverter control to determine that the cooling capacity of the heat exchanger 120 is lowered. If not in the cooling mode, the heat exchanger 120 is operated in step 23 to start the indoor heating operation.

  Next, in step 27, the indoor humidity measured by the humidity sensor 10 is compared with the set target humidity. If it is determined that the indoor humidity is low, the ventilation air volume of the fan motor unit 11 is determined in step 28 in step 28. It operates to lower 10.0 m3 / h every time it passes through the routine. At this time, the lower limit value of the ventilation air volume shall be up to the required ventilation frequency stipulated in the Indoor Building Standard Law, and the ventilation air volume shall not fall below that.

  The heating operation of the heat exchanger 120 and the ventilation air volume of the fan motor unit 11 are determined by the flow up to the above 20, 21, 22, 23, 25, 27, 28. However, in this flow, if the flow from step 27 to step 28 continues for one hour or more without any change, in steps 29 and 30, the operation is performed to reduce the ventilation air volume to the minimum ventilation air volume at once. This operation is because the control unit 8 determines that the reason why the target humidity is not reached even after a lapse of a certain time is due to supply / exhaust during ventilation operation, and is intended to suppress the ventilation air volume and bring it closer to the target humidity.

  By this operation, it is possible to save unnecessary operation of the fan motor unit 11 and reach the target humidity.

  If the flow up to steps 20, 21, 22, 23, and 25 continues for one hour or more without any change, the ventilation air volume of the fan motor 13 is set to 10.0 m ↑ 3 / h for each routine of this flow in step 25. Operates to lower. In this operation, it is determined that the reason why the target temperature is not reached even after a certain time has elapsed is due to the ventilation of the fan motor unit 11, and the ventilation air volume is suppressed to try to match the target temperature. As a result, it is possible to save unnecessary driving of the fan motor and reach the target temperature.

  If it is determined that the room temperature is higher than the target temperature set in steps 21 and 31, it is determined in step 32 whether the heat exchanger 120 is in the heating operation. Whether or not the heating operation is being performed can be determined by whether or not the heating operation is selected by the operation switch 17 of the remote controller 2. If it is determined that heating is being performed, it is determined in step 34 that the compressor compression rate is changed by inverter control to lower the heating capacity of the heat exchanger 120. If not under heating, the cooling operation of the heat exchanger 120 is started in step 33.

  Next, when it is determined in steps 27 and 37 that the humidity is high, it is determined in step 38 that the ventilation air volume of the fan motor unit 11 is increased by 10.0 m ↑ 3 / h every time the routine of this flow is passed.

  The cooling of the heat exchanger 120 and the ventilation air volume of the fan motor unit 11 are determined by the flow up to the above steps 20, 21, 31, 32, 33, 35, 27, 37, and 38. However, if the flow of steps 27, 37, and 38 continues for one hour or more without changing every time in the flow in this flow, in step 39, in steps 40 and 42, the ventilation airflow is reduced to the minimum ventilation airflow at once. Operates to lower. This operation is because the control unit 8 determines that the reason why the target humidity is not reached even after a certain period of time is due to the supply of air through the ventilation operation, and is intended to reduce the ventilation air volume and bring it closer to the target humidity.

  As a result, it is possible to save unnecessary fan motor drive and to achieve the target humidity.

  If the flow up to steps 20, 21, 31, 32, 33, and 35 continues for one hour or more without changing every time the routine is passed, the ventilation air volume of the fan motor unit 11 is immediately reduced to the minimum ventilation air volume in step 36. Operates to lower. In this operation, it is determined that the reason why the target temperature is not reached even after a certain time has elapsed is due to the ventilation of the fan motor unit 11, and the ventilation air volume is suppressed to try to match the target temperature. As a result, it is possible to save unnecessary driving of the fan motor and reach the target temperature.

  If the room temperature is determined to be equal to the target temperature in steps 20, 21, 31, the current operation of the heat exchanger 120 is maintained in step 43.

  If it is determined in steps 27 and 37 that the room humidity is equal to the target humidity, in step 44, the fan motor unit 11 operates so as to keep the ventilation air flow constant.

  If the non-heat exchange mode switch 16 is set in step 20, the operation jumps to step 27 so that the heat exchanger 120 is not operated.

  If the target temperature is not set by the remote controller 2 and only the target humidity is set, the heating of the heat exchanger 120 is heated in steps 40 and 41 when it is determined in step 39 that the humidity does not decrease even after one hour has passed. Start operation and lower the room humidity. By this operation, the indoor temperature and humidity do not converge with respect to the target value, and it is possible to prevent the drift operation of the heat exchanger and the fan motor 13 from occurring.

  If only the target temperature is set by the remote controller 2, the air flow is skipped to step 44 so that the air volume is not changed in step 45.

  With the above configuration, the air conditioner of Embodiment 1 performs ventilation while controlling the indoor temperature and humidity environment by combining the heat exchange unit 4 and the ventilation unit 3 and operating them together. As a result, when the target humidity is set by an external signal from the remote controller 2 or the like, the ventilation air volume is adjusted based on the flowchart shown above, and the operation to bring the indoor humidity closer to the target humidity is realized.

  Further, when the target temperature is set by an external signal from the remote controller 2 or the like, the heat exchanger 120 and the fan motor unit 11 are controlled based on the flowchart shown above to adjust the ventilation air volume, and the room temperature becomes the target temperature. It is realized to move closer.

  In steps 25 and 35, the change to the minimum ventilation air volume is made after one hour has passed. If the setting is changed to change to the minimum ventilation air volume for one hour immediately after the target temperature is set, the heat exchange unit after the target setting is set. It is possible to further enhance the air conditioning effect of 4.

  Further, in step 28, the ventilation air volume is changed by 10 m ↑ 3 / h for each routine, but by changing this to the minimum ventilation air volume at once, it is possible to quickly bring it closer to the target humidity. Similarly, in step 38, the ventilation air volume is changed by 10 m ↑ 3 / h for each routine. However, by changing this to the maximum ventilation air volume at once, it is possible to quickly approach the target humidity.

  In addition, if the fan motor unit 11 is configured so that a fine differential pressure sensor 112 is installed in the supply / exhaust duct 14 as an air flow detecting means and a differential pressure signal is fed back to the control unit 8, a slight deviation in the ventilation air flow is detected. Thus, the ventilation air volume of the fan motor 13 can be corrected to an appropriate value. Further, by constantly monitoring the ventilation air volume with the fine differential pressure sensor 112, it is possible to ensure an appropriate ventilation air volume without changing the ventilation air volume even when the torque characteristic changes due to the heat generated by the fan motor itself. As a result, problems such as unnecessary ventilation and insufficient ventilation airflow can be solved.

(Embodiment 2)
8 to 13 show the second embodiment.

  In the second embodiment, a humidity sensor 10 as an external humidity detection means and a temperature sensor 113 as an external air temperature detection means are placed on the supply duct side of the supply / exhaust duct 14 as shown in the figure, and these sensors are detected by the control unit 8. The information was transmitted. With this configuration, it becomes possible to supply and exhaust a necessary amount of air by comparing the temperature difference and humidity difference between the room and the room.

  The operation of the air conditioner in the second embodiment will be described based on the flowcharts of FIGS. 9 to 13.

  In FIG. 9, when the room temperature and humidity are first set by the remote controller 2, the information is first transmitted to the control unit 8. The controller 8 first determines in step 47 whether or not the non-heat exchange mode switch 16 is set. If it is determined in step 47 that the non-heat exchange mode switch 16 is not set, it is determined in step 48 whether or not the heat exchanger 120 is already in cooling. If it is determined in step 48 that cooling is in progress, it is determined in step 49 in FIG. 10 whether the room temperature is higher than the target temperature set by the remote controller 2. If it is determined in step 49 that the room is higher than the target value, it is determined in step 50 whether the outdoor temperature is higher than the room temperature. If it is determined that the outdoor temperature is low, the ventilation air volume of the fan motor unit 11 is determined in step 51. Do the operation to up. The purpose of this operation is to cool the indoor temperature by supplying cool air outside the room.

  In step 52, the heat exchanger 120 is simultaneously operated to control the heat exchange unit 4 so that the temperature in the room is lowered. In step 53, when steps 48, 49, 50, and 52 (51) are performed for one hour or more without any change, it is determined that there is an abnormality and notification is made.

  If it is determined in step 53 that the above steps 48, 49, 50, 52 (51) are executed and within one hour, the process proceeds to step 63.

  Next, in FIG. 12, it is determined whether indoor humidity is set in step 63, and if it is determined that the indoor humidity target value is determined by the remote controller 2, is the indoor humidity higher than the target humidity in step 81? Judge whether. If it is determined in step 81 that the indoor humidity is higher, it is next determined whether or not the outdoor humidity is higher than the indoor humidity. If it is determined that the outdoor humidity is higher, the fan motor unit 11 operates to reduce the ventilation airflow. This operation suppresses the supply of outdoor air and prevents the indoor humidity from rising.

  In step 84, if the above steps 81, 82, 83, 84 are performed for 30 minutes or more without any change, whether or not the ventilation air volume is increased to reach the target temperature in steps 51, 67 is step 85. Make a decision at If the ventilation air volume has been increased in steps 51 and 67, priority is given to increasing the air volume in steps 51 and 67 in step 86. This prevents the ventilation air volume from being lowered for 30 minutes even if the steps 81, 82, 83, 84 are performed.

  If it is determined in step 85 that the air volume correction has not been performed in steps 51 and 67, the fan motor unit 11 is operated at the minimum ventilation air volume for 30 minutes in step 87. Here, the minimum ventilation air volume means the necessary ventilation frequency determined by the room.

  Next, the case where it is determined in steps 49 and 55 in FIG. 1 that the room is lower than the target temperature will be described. In step 56, it is determined whether the outdoor temperature is higher than the room temperature. If it is determined that the outdoor temperature is higher than the room temperature, the ventilation air volume is increased in step 58. If it is determined that the outdoor temperature is lower than the indoor temperature, the ventilation air volume is reduced in step 57. In step 59, the cooling capacity of the heat exchanger 120 is lowered to lower the room temperature relative to the target temperature.

  In Steps 60 and 61, if Steps 48, 49, 55, 56, 58 (57) and 59 have continued for one hour or more without changing every time in the routine, it is determined that there is an abnormality and notification is made.

  If it is determined in step 49 and step 55 that the room temperature is equal to the target temperature, it is determined in step 62 that the operation is maintained as it is.

  If it is determined in step 82 that the outdoor humidity is lower than the indoor humidity in FIG. 12, the ventilation air volume of the fan motor unit 11 is increased in step 90. In this operation, indoor air is exhausted and external air having a low humidity is supplied, so that the indoor humidity approaches the target humidity.

  If steps 81, 82, 90, and 91 have continued for 30 minutes or more without changing each time in the routine, it is determined in step 92 whether the non-heat exchange mode switch 16 is set, and the non-heat exchange mode switch is determined. When 16 is set, the fan motor unit 11 is operated at the maximum ventilation air volume for 30 minutes. This operation is intended to reduce the indoor humidity to the target humidity by introducing more outdoor air into the room with the maximum ventilation air volume.

  If the non-heat exchange mode switch 16 is not set in step 92, it is determined in step 94 whether the air volume corrections in steps 57 and 73 have been performed. If it is determined that the airflow correction has been performed, the airflow correction in steps 57 and 73 is given priority for 30 minutes, and even if the routine goes to step 90, the ventilation airflow is not corrected.

  If it is determined in step 94 that the temperature has not been corrected, the heat exchanger 120 is operated, and the indoor relative humidity is lowered for 30 minutes.

  If it is determined in steps 81 and 88 that the room humidity is equal to the target humidity, the operation of the fan motor 13 is maintained as it is.

  Next, a description will be given of a flowchart when it is determined in steps 48 and 64 in FIG. 9 that the room is being heated.

  If the room temperature is being heated in step 64, it is determined in step 65 in FIG. 11 whether the room temperature is lower than the target temperature set by the remote controller 2. If it is determined that the room temperature is lower, the next outdoor temperature is lower than the room temperature. Judge whether. If it is determined that the outdoor temperature is high, the ventilation air volume of the fan motor unit 11 is increased, and the heating capacity of the heat exchanger 120 is increased in step 68. This operation is to supply warm indoor air to the room and raise the heating capacity to increase the room temperature.

  In step 69, it is determined whether or not steps 64, 65, 66, and 68 (67) are continued for one hour or more without being changed, and if they are continued, abnormality notification is performed in step 70.

  If it is determined in step 71 that the room temperature is higher than the target temperature set by the remote controller 2, it is determined in step 72 whether the outdoor temperature is lower than the room temperature, and if the outdoor temperature is determined to be lower than the room temperature. In step 74, the ventilation air volume of the fan motor unit 11 is increased, and in step 75, the heating capacity of the heat exchanger 120 is decreased. If it is determined in step 72 that the outdoor temperature is higher than the indoor temperature, the ventilation air volume of the fan motor unit 11 is decreased. These operations are for introducing the outdoor air into the room and combining the temperature in the room with the heat exchanger 120 to efficiently bring it close to the target value.

  In step 76, it is determined whether or not steps 64, 65, 71, 72, 74 (73), and 75 have been continued for one hour or more without being changed. In 77, abnormality notification is performed.

  If it is determined in steps 65 and 71 that the room temperature is equal to the target temperature, the operation of the heat exchanger 120 is maintained as it is in step 78.

  Next, a case will be described where it is determined in step 88 that the room humidity is lower than the target humidity set by the remote controller 2 in FIG.

  If it is determined in step 88 that the indoor humidity is lower than the target humidity, it is determined in step 98 in FIG. 13 whether the outdoor humidity is lower than the indoor humidity. If it is determined that the outdoor humidity is lower than that in the room, the ventilation air volume of the fan motor unit 11 is reduced in step 99 to prevent the inhalation of outdoor dry air.

  Further, in step 100, it is determined whether or not steps 88, 98, and 99 have continued for 30 minutes or more without being changed, and if it is determined that they have continued for 30 minutes or more, ventilation of the fan motor unit 11 with respect to the target temperature is determined. In step 101, it is determined whether or not the air volume has been corrected in steps 51 and 67. If it is determined that the target temperature has been corrected, priority is given to increasing the ventilation air volume in steps 51 and 67, and control is performed so that the ventilation air volume does not decrease in step 99 for 30 minutes.

  If it is determined in step 101 that the target temperature has not been corrected, in step 103, the ventilation air volume is set to the minimum ventilation air volume for 30 minutes.

  If it is determined in step 98 that the outdoor air has higher humidity than the room, the ventilation air volume of the fan motor unit 11 is increased in step 104.

  In step 105, it is determined whether or not the steps 88, 98 and 104 have continued for 30 minutes or more without being changed. If it is determined that the steps have continued for 30 minutes or more, the non-heat exchanger mode switch 16 is set in step 106. Determine whether it has been. If it is determined that the non-heat exchange mode switch 16 is set, the ventilation air volume of the fan motor 13 is changed to the maximum ventilation volume for 30 minutes in step 107. If it is determined that the switch is not the non-heat exchange mode switch 16, it is determined in step 108 whether or not the correction of the ventilation airflow is performed in steps 57 and 73 with respect to the target temperature, and it is determined that the temperature correction is performed. In this case, priority is given to reducing the ventilation air volume in steps 57 and 73 in step 109, and control is performed so that the ventilation air volume does not increase in step 104 for 30 minutes.

  If it is determined in step 108 that the target temperature has not been corrected, the cooling operation for 30 minutes is performed in step 110 to lower the relative humidity in the room.

  If neither cooling nor heating is set in step 64, the heat exchanger 120 is not operated, and the ventilation air volume of the fan motor 13 is controlled to maintain the current state. If no humidity is set at step 63, control is performed at step 97 to maintain the current ventilation airflow.

  In the configuration of the second embodiment described above, the outdoor temperature and humidity can be detected, so that the indoor temperature and the indoor humidity can be adjusted through the ventilation operation.

  Even if the target temperature and the target humidity are not set, if step 80 or step 97 is changed to an operation that changes the ventilation air volume according to the temperature difference between the room and the outdoor, the natural ventilation generated due to the temperature difference is changed to the fan motor. The effect of satisfying the necessary ventilation frequency by adding to the ventilation air volume of 13 can be expected. In step 80 and step 97, if the indoor temperature and humidity are constantly compared with the saturated water vapor pressure line, the effect of increasing the ventilation air volume and preventing condensation can be expected when the humidity increases and condensation is likely to occur.

  The air conditioner of the present invention can be expected to keep the temperature and humidity of the indoor environment constant. Useful.

The figure which shows the use condition of the air conditioner of Embodiment 1 of this invention Overview of the air conditioner configuration Detailed view showing the configuration of the air conditioner Diagram showing the operation of the air conditioner The figure which shows the remote control function of the same air conditioner Block diagram showing the configuration of the air conditioner Flow chart showing the operation of the air conditioner The block diagram which shows the structure of the air conditioner of Embodiment 2 of this invention. Flow chart showing the operation of the heat exchange device of the air conditioner Flow chart showing the cooling operation of the heat exchange device of the air conditioner The flowchart which shows the heating operation of the heat exchange apparatus of the air conditioner Flow chart showing the overall operation of the fan motor unit of the air conditioner Flow chart showing the fan motor unit humidity adjustment operation of the air conditioner The figure which shows the structure of the conventional ventilator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning unit 2 Remote control 3 Ventilation unit 4 Heat exchange unit 5 Intake port 6 Exhaust port 7 Air supply port 8 Control part 9 Temperature sensor 10 Humidity sensor 11 Fan motor unit 12 Ventilation unit air supply port 13 Fan motor 14 Supply / exhaust duct 15 Automatic ventilation / manual switch 16 Non-heat exchange mode switch 17 Operation switch 120 Heat exchanger

Claims (12)

A casing disposed on the ceiling or wall of the room, a suction port that is disposed in the casing and sucks the indoor air into the casing, and an exhaust port that discharges the air sucked from the suction port to the outside A fan motor, a heat exchanger arranged in the casing for exchanging heat with air, a blowout port for blowing out the air heat-exchanged by the heat exchanger into the room, and a target temperature of room air outside the casing A target temperature setting means for setting, a target humidity setting means for setting the target humidity, and an outside humidity detection means for detecting the outdoor humidity, and the indoor humidity is set to the indoor target humidity set by the target humidity setting means. An air conditioner that controls the fan motor and adjusts the ventilation air volume so that it can be approached. 2. The air conditioner according to claim 1, wherein the ventilation air volume is adjusted by controlling the fan motor so as to bring the room temperature closer to the room target temperature set by the target temperature setting means. The air conditioner according to claim 1 or 2, wherein after the target temperature and humidity are set by the target humidity setting means and the target temperature setting means, the ventilation air volume is reduced for a predetermined time. 3. The air conditioner according to claim 1, wherein after the target temperature and humidity are set by the target humidity setting means and the target temperature setting means, the ventilation air volume is increased for a predetermined time. 5. The air flow is changed to a predetermined ventilation air volume when the indoor humidity has a difference of a certain value or more with respect to the target humidity after a predetermined time has elapsed after the target humidity is set. Air conditioner. When the target humidity is set and a certain time elapses, if the room humidity has a difference of a certain value or more with respect to the target humidity, the heat exchanger is controlled to adjust the room temperature. The air conditioner according to 3 or 4. When the target temperature is set and a certain time elapses, if the actual temperature is different from the target temperature by a certain value or more, the air flow is changed to a predetermined ventilation air volume. The air conditioner according to 5 or 6. When the target temperature and humidity have been set and a certain time has elapsed, if the room temperature and humidity differ from the target temperature and humidity by a certain value or more, give priority to the target temperature and control the heat exchanger and fan motor to reduce the room temperature. It adjusts to target temperature, The air conditioner of Claim 1, 2, 3, 4, 5, 6 or 7 characterized by the above-mentioned. An air volume detection means is provided, and when the air volume detection means detects a change in the air volume, the fan motor is controlled so that the ventilation air volume discharged from the exhaust port becomes constant. 6. The air conditioner according to 6, 7 or 8. It is equipped with an outdoor air temperature detection means that detects the outdoor temperature, and if there is a difference between the indoor temperature and the outdoor temperature above a certain value, the indoor ventilation volume is adjusted to a constant value by combining the natural ventilation volume and the ventilation air volume exhausted from the exhaust port. The air conditioner according to claim 1, 2, 3, 4, 5, 6, 7, 8, or 9. The ventilation air volume is changed to a predetermined ventilation air volume when the indoor humidity and the outdoor humidity have a difference equal to or greater than a certain value, or 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10. The air conditioner according to 10. When the indoor temperature is low and the humidity is high, the ventilation air volume is changed to a predetermined ventilation air volume to prevent condensation in the room. , 9, 10 or 11.

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