JP2004333123A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce indoor air humidity by prescribed quantity by simple operation, and automatically return an air conditioner to a dehumidifying operation state for an initial set humidity. <P>SOLUTION: Before time t=0, operation is performed in a normal dehumidifying operation mode for set humidity of 50% and compressor rotation of 3000 rpm. As a powerful button is operated by an operation remote control, the set humidity is changed into 40%, and powerful dehumidifying operation is performed to continuously rotate a compressor at 3600 rpm to achieve the set humidity. Indoor air humidity is thus quickly reduced to the set humidity. The powerful dehumidifying operation is canceled after prescribed period T<SB>1</SB>to return the set humidity to 50%. The compressor is continuously rotated at 3000 rpm for a prescribed period T<SB>2</SB>, and then, as the indoor air humidity becomes almost 50%, normal dehumidifying operation is restored (T<SB>3</SB>). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioner, and more particularly, to an operation capability such as a dehumidification capability, a cooling capability, and a heating capability.

  FIG. 9 is a diagram showing a general configuration of a refrigeration cycle in a conventional air conditioner, where 101 is a compressor, 102 is an outdoor heat exchanger, 103 is a decompressor, 104 is an indoor heat exchanger, and 109 is It is a four-way valve.

  In the figure, in the case of a dehumidifying operation or a cooling operation, the outdoor heat exchanger 102 is used as a condenser, and the indoor heat exchanger is used as a cooler.

  The high-temperature and high-pressure refrigerant gas output from the compressor 101 emits heat to the outside in the condenser 102 to become a liquid, and the pressure is reduced by the decompression device 103 and sent to the cooler 104. In the cooler 104, the refrigerant takes low heat from the room and evaporates to become low-pressure gas, and this low-pressure gas is used to switch the refrigeration cycle between the cooling and dehumidifying operations and the heating operation during the four-way valve 109. And returns to the compressor 101.

  In the case of the heating operation, the four-way valve 109 forms a refrigeration cycle in which the outdoor heat exchanger 102 serves as a cooler and the indoor heat exchanger 104 serves as a condenser.

  Even in the dehumidifying operation, the same refrigeration cycle as that of the cooling operation is configured, and the indoor temperature is removed by the cooler 104 to remove the moisture in the indoor air. The room temperature is also affected. Therefore, in order to suppress such a change in room temperature, a reheating method is known in which air cooled for removing moisture is heated.

  FIG. 10 is a cross-sectional view showing the basic configuration of an indoor unit of such an air conditioner, wherein 105 is a once-through fan, 106 is humid air, 107 is a water reservoir, 108 is blown air, 111 is an electric heater, 104 Is a cooler 104 similar to FIG.

  In FIG. 10, when the once-through fan 105 rotates, the indoor moist air 106 is sucked in, and is cooled and condensed by the cooler 104, so that the water in the air 106 becomes water droplets and is discharged to the water droplet reservoir 107. Is done. Conventionally, in general, the cooled air whose temperature has been lowered is blown into the room as blown air 108 by the once-through fan 105. However, in the reheating type air conditioner, the air of the indoor unit passes through. An electric heater 111 is installed in the heater, and the air cooled and cooled by the electric heater 111 is reheated and blown into the room as blown air 108.

  In such an air conditioner, an operation device (for example, a remote control) is provided with an operation button common to a plurality of operation modes, and a user operates the operation button so that a target temperature is obtained in a dehumidification operation or a cooling operation. The heating capacity is increased by increasing the target temperature in the heating operation by increasing the dehumidification amount (dehumidifying capacity) and the cooling capacity, respectively.

There is also an air conditioner provided with an operating device provided with a thermal input / output switch provided with a thermal sensation button for operating a user to change a set temperature by a predetermined temperature according to the user's thermal sensation (for example, see Patent Reference 1).
JP-A-62-752

  By the way, even when the room feels damp or when it is desired to make the room more dry after taking a bath, etc., the conventional air conditioner performs the dehumidification operation with a constant dehumidification capacity. Could not be dried. Also, there is a method of reducing the humidity by increasing the dehumidifying capacity by lowering the target temperature as in the above-described conventional air conditioner. However, the room temperature also decreases, and it is not possible to lower only the humidity.

  Also, in the case of warming and cooling, by changing the target temperature, the operating capacity can be increased to a desired room temperature. However, once the target temperature is set and the operating capacity is increased, the target temperature changing operation is performed again. , The warming and cooling operations corresponding to the set target temperature are performed. Therefore, for example, in summer, a person who has gone out can go home and operate the temperature operation button on the remote control so that the target temperature is lower than before, but after a certain period of time, it becomes cold. You may feel it. In such a case, if the target temperature is not increased, the state in which the user feels cold will continue as it is, and in order to avoid this, it will be troublesome to operate the temperature operation button of the remote controller again.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an air conditioner that can solve such a problem, reduce the labor of operation, and quickly create a desired indoor environment of a user.

In order to achieve the above object, the present invention provides an operation button for selecting a heating operation, a cooling operation, and a dehumidifying operation, and operates as a re-heater and a heat exchanger portion acting as a cooler during the dehumidifying operation. An air conditioner provided with an indoor heat exchanger having a heat exchanger portion
While providing an operation button for performing an operation to increase the dehumidifying capacity during the dehumidifying operation,
Means are provided for prohibiting the stop of the compressor for a predetermined time after the end of the operation for increasing the dehumidifying capacity.

  According to the present invention, since the dehumidifying ability in the dehumidifying operation can be enhanced only by operating the operation button provided on the operating device, the setting can be performed in comparison with the case of switching the set temperature in the conventional air conditioner. There is no need to consider various conditions such as temperature at all, and only the button operation is required, and the humidity of the indoor air can be reduced by an easy operation.

  Then, since a period in which the compressor is not stopped for a predetermined period of time without intervening directly from the release of the dehumidifying operation state with the increased dehumidifying operation state to the original dehumidifying operation state and intervening for a predetermined period is included, Even if the operation is canceled and the humidity at this time is low, the compressor rotates and gradually approaches the humidity state in the original dehumidifying operation, and the dehumidifying operation with the increased dehumidifying capacity returns to the original dehumidifying operation state. Humidity does not change abruptly during the transition process.

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

  FIG. 1 is a block diagram showing an embodiment of an air conditioner according to the present invention, wherein 1 is a main body of the air conditioner (hereinafter simply referred to as a main body), 2 is an operation remote controller, and 3 is a microcomputer (hereinafter, a microcomputer). 4 is a receiving circuit, 5 is a room temperature detector, 5 'is an outside air temperature detector, 6 is a humidity detector, 7 is an indoor fan motor, 8 is an outdoor fan motor, 9 is a compressor, 10 Is a CPU (Central Processing Unit), 11a is a RAM, 11b is a ROM, 12 is a power supply, 13 is a powerful button, 14 is a run / stop button, 15 is a transmission circuit, and 16 is a battery.

  In FIG. 1, a main body 1 has a microcomputer 3 as a center, which controls a whole of the main body 1, a medical examination circuit 4 which receives a signal from an operation remote controller 2, a room temperature detector 5 which detects a room temperature around the main body 1, and a humidity detector. A humidity detector 6, an outdoor air temperature detector 5 'for detecting an outdoor temperature, an indoor fan motor 7, an outdoor fan motor 8, a compressor 9, and the like are supplied with power from a power supply 12. .

  The microcomputer 3 includes a CPU 10 and a rewritable RAM 11a for storing operation information indicating temperature, humidity, wind speed, and the like set according to an operation mode specified by the operation remote controller 2, and various types of power used for a powerful operation described later. And a read-only ROM 11b which stores the data of FIG. Here, a dehumidifying operation, a cooling operation, and a heating operation can be designated as the operation modes. In each operation mode, the operation mode is designated by a combination of two or more of these temperature, humidity, and wind speed.

  The operation remote controller 2 includes a start / stop button 14 for instructing start and stop of operation in a specified operation mode, and operation capabilities (dehumidification, heating, and cooling operation modes) in an operation mode (dehumidification, heating, and cooling operation modes) being executed. An operation button such as a powerful button 13 for increasing the dehumidifying capacity, the heating capacity, and the cooling capacity for each of the heating and cooling operation modes by a predetermined amount is provided.

  This powerful button 13 is effective when the main body 1 is operating in a desired mode (that is, in the operation mode), and when the powerful button 13 is pressed in the dehumidification operation mode, it is determined in advance. The dehumidifying capacity is increased by the amount to increase the dehumidifying amount, and the indoor humidity is lowered. When the powerful button 13 is pressed in the heating operation mode, the heating capacity is increased by a predetermined amount, and the room temperature is increased by a certain temperature. When the powerful button 13 is pressed in the cooling operation mode, the cooling capacity is increased by a predetermined amount, and the room temperature is lowered by a certain temperature.

  The period during which the driving capability is increased by operating the powerful button 13 is a predetermined period, and when this period elapses, the driving mode and the driving capability immediately before the original powerful button 13 is pressed are restored. To return.

  Operation information and the like corresponding to the operation of the operation button are transmitted from the transmission circuit 15 to the main body 1. The operation remote controller 2 has a built-in battery 16 from which electric power is supplied.

  FIG. 2 is a plan view showing a specific example of the operation unit of the operation remote controller 2 shown in FIG. 1, wherein 2a is a lid, 17 is a dehumidification button, 18 is a display unit, 19 is a room temperature setting button, and 20 is a night timer operation button. , 21 is a wind speed switching button, 22 is an automatic wind speed up / down button, 23 is a time button, 24 is a reset switch, 25 is an on timer button, 26 is an off timer button, 27 is a reservation button, 28 is a cancel button, 29 is a date and A current time button 30 is an operation switching button, and portions corresponding to those in FIG. 1 are denoted by the same reference numerals.

  FIG. 2A shows a state in which the cover 2a of the operation remote controller 2 is closed. At this time, the surface of the operation remote controller 2 is provided with a dehumidifying operation in addition to the powerful button 13 and the operation / stop button 14. The dehumidification button 17 for starting, the room temperature setting button 19 for setting the target room temperature, and the ON timer button 25 and the OFF timer button 26 (FIG. 2B) are used in combination to set after going to bed. A sleep timer operation button 20 for automatically stopping operation at a set time or automatically starting operation at a set time before awakening is provided, and also includes a set operation mode and a set operation mode. A display unit 18 for displaying conditions and the like is also provided.

  When the lid 2a is opened, as shown in FIG. 2 (b), a wind speed switching button 21 and a vertical wind direction plate that allow the user to select the wind speed of the indoor fan (through-flow fan) are controlled in the hollow according to the preference. Automatic wind improvement down button 22 for changing wind direction, date and current time button 29, and time button 23 for changing and setting calendar and time, reset switch 24 for normal operation, timer A reservation button 27 for making a reservation, a cancel button 28 for canceling timer reservation, an operation switching button 30 for switching operation modes, and the like are provided.

  FIG. 3 is a configuration diagram showing a specific example of the refrigeration cycle in the embodiment shown in FIG. 1, in which 104a and 104b are indoor heat exchangers, 110 is a solenoid valve, and portions corresponding to FIG. The same reference numerals are given and duplicate descriptions are omitted.

  In the figure, the indoor heat exchanger is divided into two heat exchangers 104a and 104b, which are connected by a solenoid valve 110. During the cooling operation, the indoor heat exchangers 104a and 104b are both a cooler and an outdoor heat exchanger. The heat exchanger 102 operates as a radiator, and during the heating operation, both the indoor heat exchangers 104a and 104b operate as a radiator, and the outdoor heat exchanger 102 operates as a cooler. Further, at the time of the dehumidifying operation, the indoor heat exchanger 104a used as a cooler during the cooling operation is used as a reheater and the indoor heat exchanger 104b is used as a cooler, and other parts are shown in FIG. This is the same as the refrigeration cycle of the cooling operation in the conventional air conditioner.

  In the dehumidifying operation, as in the cooling operation, the refrigerant flows as indicated by the arrows, cools the air taken in from the room by the cooler 104b, and reheats the air by the reheater 104a. Thus, dehumidification can be performed without lowering the room temperature.

  FIG. 4 is a cross-sectional view showing a specific example of the main unit 1 shown in FIG. 1 on the indoor unit side, and portions corresponding to FIG. 10 and FIG.

  In the figure, in the indoor unit, the reheater 104a is arranged on the upper side, and the cooler 104b is arranged on the lower side. A part of the air 106 sucked by the indoor fan 105 is cooled through the cooler 104b, and the water contained in the air 106 is cooled and condensed to form water droplets, which are stored in the water droplet reservoir 107. Thereby, the air that has passed through the cooler 104b is dehumidified. However, this air has been cooled and the temperature has dropped.

  On the other hand, the rest of the air 106 sucked by the indoor fan 105 is heated through the reheater 104a and mixed with the cooled air through the cooler 104b. Therefore, the air is warmed through the cooler 104b, so that the air 108 discharged from the indoor unit into the room becomes low-humidity air in which the temperature is suppressed from decreasing and the relative humidity decreases.

  Next, the operation of the embodiment shown in FIG. 1 will be described with reference to FIGS.

  First, in FIG. 5, when the power supply 12 is connected to the main body 1 and power is supplied, the microcomputer 3 is initialized, that is, the CPU 10 and the RAM 11a are cleared, and the receiving circuit 4 is initialized. (Step 200), and waits for a reception signal from the operation remote controller 2 in the reception circuit 4 (step 201). If there is a reception signal, the type of the reception signal is determined (step 202).

  When it is determined that the received signal is the operation stop signal by operating the operation / stop button 14 (FIGS. 1 and 2A), it is determined whether the air conditioner is operating ( Step 203) If the operation is in progress, the operation is stopped (Step 204) and the process returns to Step 201.

  If it is determined that the received signal is the operation start signal and the operation mode information (the information for designating the dehumidification operation, the cooling operation, the heating operation, etc., by operating the operation / stop button 14) (step S1). 202), temperature and humidity are read from the room temperature detector 5, the outside air temperature detector 5 ', and the humidity detector 6 of the main body 1 (step 205). Then, the operation mode information including the data such as the set temperature received together with the operation start signal from the receiving circuit 4 is read (step 206), and the operation mode information is written into the RAM 11a (step 207).

  Next, it is determined from the contents of the operation mode information which operation mode (any one of the dehumidification operation, the cooling operation, and the heating operation) (step 208). The fan motor 7 and the outdoor fan motor 8 are started (step 209). Next, the rotational speeds of the compressor 9, the indoor motor 7, and the outdoor motor 8 are calculated from the difference between the room temperature and the humidity and the set temperature and the set humidity (step 210). An instruction is given to the indoor fan motor 7 and the outdoor fan motor 8 to rotate at the calculated rotation speeds (step 211). Thereafter, the process returns to step 201.

  Thereafter, unless there is a received signal, a series of processes of steps 201, 210, and 211 are repeated, and the rotational speeds of the compressor 9, the indoor motor 7, and the outdoor motor 8 are controlled according to changes in room temperature and humidity. The specified operation mode is executed while the operation is being performed.

  When the operation is stopped in step 204, the process stands by in step 201 until there is a next reception signal.

  During execution of the designated operation mode, the powerful button 13 (FIGS. 1 and 2A) of the operation remote controller 2 is operated, and when data corresponding thereto is received by the main body 1 (step 202), the processing shown in FIG. The operation is performed. Next, the operation when the powerful button 13 is operated will be described with reference to FIG.

  In FIG. 6, if the powerful button 13 is operated during the dehumidifying operation (step 300), the CPU 10 rotates the compressor 9 in the normal dehumidifying operation that is being executed at the time of operating the powerful button 13 (here, the rotational speed of the compressor 9). , 3000 rpm) is instructed to rotate at a rotational speed (here, 3600 rpm) set in the ROM 11b higher than the preset humidity (step 301), and the set humidity is set to the set humidity in the normal dehumidifying operation. The setting is changed to a preset humidity (here, 40%) set in the ROM 11b lower than (here, 50%) (step 302).

  As a result, the compressor 9 rotates at a rotation speed of 3600 rpm, which is higher than that during the normal dehumidification operation, and the amount of dehumidification increases to increase the dehumidification capacity, and the set humidity changes from 50% to 40%. The humidity of the air becomes lower than during normal dehumidification operation. Such a dehumidifying operation is hereinafter referred to as a powerful dehumidifying operation.

  At this time, in the refrigerating cycle shown in FIGS. 3 and 4, the cooling power of the cooler 104b increases and the reheat amount of the reheater 104a also increases, so that the air 108 blown out from the indoor unit is Even if the dehumidifying ability increases, the temperature does not decrease and the room temperature does not decrease, and only the humidity decreases.

  In this manner, only by operating the powerful button 13, the humidity of the indoor air can be reduced by a predetermined amount, and the rotational speed of the compressor 9 is increased to increase the dehumidifying capacity. It is possible to immediately obtain a low-humidity indoor environment with a simple operation. When the humidity is lowered by changing the set temperature as in the prior art, it is necessary for the user to determine whether the set temperature should be changed to a degree. In this embodiment, such a determination is made. It is not necessary at all, and only the powerful button 13 needs to be operated, and the operation becomes very simple.

  Returning to FIG. 6, the powerful dehumidifying operation is executed as described above. When the time set in the ROM 11b (120 min here) elapses after the execution of the powerful dehumidifying operation (step 303). Then, a process for canceling the powerful dehumidifying operation is performed (step 304), and based on this, the rotation speed of the compressor 9 is returned to the original 3000 rpm (step 305), and the set humidity is returned to the original 50%. (Step 306), the powerful dehumidifying operation is automatically canceled.

  Then, after the powerful dehumidifying operation is canceled, the compressor 9 is prohibited from stopping for a predetermined time (here, 20 minutes) and is rotated at 3000 rpm (step 307). After the elapse of 20 minutes, the process shifts to step 210 in FIG.

  In this way, even if the powerful dehumidifying operation is canceled, the humidity of the room air does not suddenly increase, and the humidity of the room air gradually returns from 40% to 50%.

  Normal dehumidifying operation generally involves setting the humidity so as to create an environment in which the user feels the optimal humidity indoors (in this case, 50%), whereas a powerful dehumidifying operation is performed. For example, to create a special environment required when there are many people and the room feels damp or when returning home from the outside room and sweaty, etc. , Comfort is impaired. In this embodiment, as described above, by setting a time limit for such a powerful dehumidifying operation, the powerful dehumidifying operation is automatically canceled to return to the normal dehumidifying operation. When switching to operation, the user is not required to operate.

  Even if the powerful button 14 is operated again, the powerful operation can be canceled in the same manner as described above. This is the same for the powerful operation in the cooling operation and the heating operation described later.

  When the powerful operation is canceled (steps 304 to 306) and the operation immediately shifts to the normal dehumidification operation (step 210 in FIG. 5), the humidity control is performed. At this time, the humidity is lower than 50% by the powerful dehumidification operation. Since it is 40%, the CPU 10 naturally stops the compressor 9. For this reason, the humidity of the room air sharply rises, causing the user to feel as if the humidity suddenly rises. For this reason, in this embodiment, step 307 shown in FIG. 6 is provided, and even after the powerful dehumidifying operation is canceled, the compressor 9 is rotated at 3000 rpm without controlling the humidity for almost 20 minutes to suppress a rapid rise in humidity. That's how it works. If the operation takes about 20 minutes, the humidity of the indoor air is close to 50% of the set humidity, and the increase in humidity during this time does not cause discomfort to the user, and also returns to the normal dehumidification operation. Even if humidity control is performed, there is no sudden change in humidity.

In FIG. 6, if the power operation information is obtained by operating the powerful button 13 during the normal cooling operation in steps 201, 202, 210, and 211 in FIG. 5 (step 300), the CPU 10 determines in advance the ROM 11b. Is shifted from the current set temperature by the set temperature shift amount (here, 2 ° C.) set as a new set temperature (step 308). For example, assuming that the set temperature in the normal cooling operation before the operation of the powerful button 13 is 27 ° C., the new set temperature is 27 ° C.-2 ° C. = 25 ° C.
And At the same time, the CPU 10 increases the rotation speed of the compressor 9 to a rotation speed at which the room temperature is set and maintained at the set temperature by continuous rotation so that the room temperature becomes the new set temperature, and the cooling capacity is increased. (Step 309). Then, when the room temperature decreases by the set temperature shift amount of 2 ° C. and reaches the new set temperature, the temperature control is performed so that the room temperature is maintained at the new set temperature. The cooling operation with the increased cooling capacity is hereinafter referred to as a powerful cooling operation.

  After the execution of the powerful cooling operation, when the time set in the ROM 11b (here, 60 minutes) elapses (step 310) (step 310), the CPU 10 performs a process of canceling the powerful cooling operation (step 311). The temperature is returned to the original setting temperature during normal cooling operation (27 ° C. in the above example) (step 312), and the rotation speed of the compressor 9 is reduced accordingly (step 313), and the powerful cooling is performed. Automatically cancel driving. Then, the stop of the compressor 9 by the temperature control is prohibited until a predetermined time (here, 20 minutes) elapses after the release of the powerful cooling operation (step 314), and thereafter, the step of FIG. The process proceeds to 210 and returns to the normal cooling operation.

  This powerful cooling operation is also different from the normal cooling operation that was set before, for example, when taking a bath or when people move around, etc. The purpose is to create a temporary indoor environment that is required in a special condition, and if it is continued as it is, the room will be in a state of being too cold, which is not an appropriate environment and a comfortable environment . For this reason, the user naturally wants to return to the original cooling operation state after performing the cooling operation in which the cooling capacity has been increased for a certain period of time. However, in this embodiment, it is time-consuming for the powerful cooling operation. By providing the restriction, the operation of the user is saved and the operation is automatically returned to the normal cooling operation.

  Step 314 is also received for the same reason as that in step 307 in the dehumidifying operation. The set temperature is raised to the original set temperature, the powerful cooling operation is canceled, and the process immediately shifts to the normal cooling operation. Then, the temperature control is actuated, the compressor 9 stops, and the room temperature rises sharply. This is provided to prevent this.

  In this way, even in the cooling operation, the cooling capacity is increased by a simple operation of merely operating the powerful button 13 to temporarily lower the room temperature by a predetermined amount (in this case, 2 ° C.) for a predetermined time. After the lapse of time, it can be automatically returned to the original normal cooling operation state.In the conventional air conditioner, when the cooling capacity is increased by switching the set temperature, when returning to the original cooling capacity operation, Although an operation of switching the set temperature is necessary, in this embodiment, such an operation becomes unnecessary, and the operation is simplified, and the user does not need to be conscious of returning to the original operation state at all. In this case, the reason why the powerful cooling operation period was set to 60 min is that if the set temperature is lowered by 2 ° C., the indoor wall temperature becomes sufficiently low, and the set temperature is increased by 2 ° C. This is because even when returning to the normal cooling operation, the user does not feel the heat.

  Further, in addition to the above operation, even if the powerful button 13 is operated during the powerful cooling operation, the powerful cooling operation may be canceled to shift to the normal cooling operation (step 210 in FIG. 5). . In this case, the operation may be shifted directly to the normal cooling operation without performing the operation of step 323.

In FIG. 6, if the power operation information is obtained by operating the power button 13 during the normal heating operation in steps 201, 202, 210, and 211 in FIG. 5 (step 300), the CPU 10 determines in advance the ROM 11b. Then, the current set temperature is increased by the set temperature shift amount (here, 3 ° C.) set as a new set temperature (step 315). For example, if the set temperature during normal heating operation is 23 ° C, the new set temperature
23 ℃ ＋ 3 ℃ ＝ 26 ℃
And At the same time, the CPU 10 increases the rotation speed of the compressor 9 to such a value that the room temperature is set and maintained at the set temperature by the continuous rotation (step 316), and the rotation speed of the outdoor fan motor is increased. It is increased (step 317). As a result, the heating capacity increases and the room temperature rises to a new set temperature of 26 ° C. Hereinafter, such a heating operation is referred to as a powerful heating operation.

  When the powerful heating operation is started as described above, the defrosting operation (defrost) is prohibited for a predetermined time (here, 20 minutes) from the start (step 318). Normally, when the heating operation is started, the heating temperature is increased by increasing the set temperature in the heating operation, or every predetermined period, the refrigeration cycle is temporarily stopped in order to remove frost generated in the outdoor heat exchanger. A state similar to the cooling operation is performed, and a defrosting operation for melting this frost is performed (in this case, the indoor fan is stopped so that the indoor temperature does not decrease). However, if such a defrosting operation is performed in the powerful heating operation, the heating operation is stopped during this time, and the room temperature drops. Step 318 is provided to prevent this.

  When the time set in the ROM 11b in advance (here, 90 minutes) elapses after starting the powerful heating operation (step 319) (step 319), the CPU 10 performs a process of automatically canceling the powerful heating operation (step 320). ), The set temperature is returned to the original set temperature in the normal heating operation (23 ° C. in the above example) (step 321), and at the same time, the rotation speed of the compressor 9 is reduced (step 322), and the Cancel the heating operation. Then, the stop of the compressor 9 by the temperature control is prohibited until a predetermined time (here, 20 minutes) elapses after the release of the powerful cooling operation (step 314), and thereafter, the step of FIG. The process proceeds to 210 to return to the normal heating operation.

  This powerful heating operation is also different from the normal heating operation, for example, when the body is cold after returning home from the outside in winter, or when you want to warm the room quickly when starting the heating operation, etc. In order to create the temporary indoor environment required in the above, if this state is continued as it is, the room will be in a state of being overheated, which is not an appropriate environment or a comfortable environment. For this reason, the user naturally wants to return to an operation state in which heating is performed appropriately after performing the heating operation in which the heating capacity is increased for a certain period of time. By imposing a temporary restriction, the operation of the user is saved, and the operation automatically shifts to the normal heating operation and returns to the normal heating operation.

  Step 323 is also received for the same reason as in step 307 in the dehumidification operation. The set temperature is lowered to the original set temperature, the powerful heating operation is canceled, and the process immediately shifts to the normal heating operation. Then, the temperature control is actuated, the compressor 9 stops, and the room temperature suddenly drops. This is provided to prevent this.

  In this way, even in the heating operation, the heating capacity is increased by a simple operation of merely operating the powerful button 13 to temporarily increase the room temperature by a predetermined amount (in this case, 3 ° C.) for a predetermined time. After the lapse of time, it can be automatically returned to the original normal heating operation state.In the conventional air conditioner, when the heating capacity is strengthened by the switching operation of the set temperature, when returning to the operation of the original heating capacity, it is again performed. Although an operation of switching the set temperature is necessary, in this embodiment, such an operation becomes unnecessary, and the operation is simplified, and the user does not need to be conscious of returning to the original operation state at all. In addition, the reason why the powerful heating operation period was set to 90 min is that at this level, when the set temperature is increased by 3 ° C., the indoor wall temperature is sufficiently warmed and the set temperature is lowered by 3 ° C. to the original set temperature. This is because it is considered that the user does not feel chills when returning to normal heating operation.

  Further, in addition to the above operation, even if the powerful button 13 is operated during the powerful heating operation, the powerful heating operation may be canceled to shift to the normal heating operation (step 210 in FIG. 5). . In this case, the operation in step 323 may not be performed, and the process may directly shift to the normal heating operation.

  FIG. 7 is a diagram showing the operation of the compressor and the change in humidity during the powerful dehumidifying operation and the transition from the dehumidifying operation to the normal dehumidifying operation.

In the figure, a period T ₁ is an operation period (= 120 min) of the powerful dehumidifying operation set in step 303 in FIG. 6, and a period T ₂ is a stop of the compressor 9 set in step 307 in FIG. a prohibition period (= 20min), the period T ₃ is the operation period of the normal dehumidifying operation. A indicates a change in the humidity of the indoor air, and B indicates a change in the rotation speed of the compressor 9.

At time t = 0, when switching from the normal dehumidifying operation at the set humidity of 50% to the powerful dehumidifying operation at the set humidity of 40%, the rotation speed B of the compressor 9 switches from 3000 rpm to 3600 rpm, and the humidity A of the indoor air becomes 50%. %, And then gradually decreases to 40% (however, if there are many occupants or if the amount of moisture released is just 50%, etc., the humidity will not decrease. It is slow, takes a lot of time to reach 40%, and may not reach 40%). When this powerful dehumidifying operation is performed only for the period T ₁ (= 120 min), the powerful dehumidifying operation is released, the set humidity is changed to 50%, and the compressor 9 rotates at the normal rotation speed during the normal dehumidifying operation. The rotation speed is changed to 3000 rpm, and the rotation is continued. When the operation is switched to the normal dehumidifying operation, the humidity A of the indoor air gradually increases due to the influence of human sweating and breathing, and moisture release from walls and furniture. When this operation state continues for the period T ₂ (= 20 min), the operation is switched to the normal dehumidification operation by temperature control (period T ₃ ), and the humidity A of the room air gradually increases to the set humidity of 50%.

  The same tendency is observed in the powerful cooling operation and the powerful heating operation. FIG. 8 is a diagram showing the indoor temperature distribution between the normal heating operation and the powerful heating operation, wherein 1a shows the indoor unit of the main body 1, and FIG. 8 (a) shows the case where the set temperature is 24 ° C. FIG. 3B shows a case where the normal operation is in a stable state, and FIG. 4B shows a case where 30 minutes have elapsed after the start of the powerful operation when the set temperature is set to 27 ° C., which is 3 ° C. higher than this.

  Generally, in the case of the heating operation, the indoor unit 1a blows out the heated air in the direction of the floor immediately below, and therefore, as shown in FIG. However, as a whole, the room is warmed to the set temperature.

  When the powerful button 13 is operated in the normal heating operation state shown in FIG. 8A to set the heating operation state to the powerful heating operation state, the heating capacity increases, and as shown in FIG. As the temperature rises, an area higher than the set temperature of the floor surface spreads. In the case of the normal heating operation, as is clear from FIG. 8A, even on the floor surface, the temperature is high in a portion close to the indoor unit 1a, and when it is away from this, the temperature decreases to a temperature close to the set temperature. Become.

  As described above, in this embodiment, by pressing the powerful button 13 during the dehumidifying, cooling, and heating operations, the compressor 9 is continuously rotated without performing temperature control, and the dehumidifying capacity, the cooling capacity, and the heating capacity are changed. Since the increased power dehumidifying operation, powerful cooling operation, and powerful heating operation are performed, the humidity of the indoor air can be reduced more quickly than the conventional air conditioner that switches the set temperature to increase the dehumidifying capacity, cooling capacity, and heating capacity. The temperature can be lowered, the indoor temperature can be lowered by a predetermined temperature, the indoor temperature can be raised by a predetermined temperature, and the indoor environment temporarily required by the user can be quickly realized.

  In addition, since the powerful operation mode can be set with a common operation button for each operation mode, the operation becomes easy, and the powerful operation mode is set to a predetermined time. After the passage of time, the operation mode is automatically released and returns to the original operation mode, so that when the temporarily required powerful operation mode is no longer needed, the user does not need to switch to the original operation mode. This saves the trouble of the operation, and the user does not need to be conscious of switching to the original operation mode.

  In the above description, numerical examples are specifically shown, but these are merely shown for convenience of description of the embodiment, and the present invention is not limited by such numerical values.

It is a block diagram showing one embodiment of an air conditioner by the present invention. FIG. 2 is a plan view showing a specific example of an operation remote controller in FIG. 1. FIG. 2 is a diagram illustrating a refrigeration cycle in the embodiment illustrated in FIG. 1. It is sectional drawing which shows the indoor unit in embodiment shown in FIG. 2 is a flowchart showing an overall control operation of the embodiment shown in FIG. 3 is a flowchart showing a control operation when a powerful button is operated in the embodiment shown in FIG. FIG. 2 is a diagram illustrating a powerful dehumidifying operation and a normal dehumidifying operation in the embodiment illustrated in FIG. 1, and a humidity and a rotation speed of a compressor in a transition process thereof. FIG. 2 is a diagram showing a room temperature distribution in a normal heating operation and a powerful heating operation in the embodiment shown in FIG. 1. FIG. 9 is a diagram illustrating an example of a refrigeration cycle of a conventional air conditioner. It is sectional drawing which shows an example of the indoor unit of the conventional air conditioner.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Air conditioner main body 2 Operation remote control 3 Microcomputer 4 Receiving circuit 5 Room temperature detector 5 'Outside air temperature detector 6 Humidity detector 7 Indoor fan motor 8 Outdoor fan motor 9 Compressor 10 CPU
11a RAM
11b RAM
DESCRIPTION OF SYMBOLS 12 Power supply 13 Powerful button 14 Operation / stop 15 Transmission circuit 16 Battery 101 Compressor 102 Condenser 103 Decompression device 104a Reheater 104b Cooler 105 Once-through fan 106 Air 107 Water reservoir 108 Air 109 Four-way valve 110 Solenoid valve

Claims (1)

An indoor heat exchanger provided with operation buttons for selecting a heating operation, a cooling operation, and a dehumidification operation, and having a heat exchanger part acting as a cooler and a heat exchanger part acting as a reheater during the dehumidification operation In air conditioners equipped with
While providing an operation button for performing an operation to increase the dehumidifying capacity during the dehumidifying operation,
An air conditioner comprising means for prohibiting stopping of the compressor for a predetermined time after the operation for increasing the dehumidifying capacity is completed.

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