JP2010002068A - Air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner capable of reducing power consumption when used in combination with an air conditioner.
An air cleaner that includes a blower 8 for sucking air, purifies the air sucked by the blower 8, and blows it out. A temperature sensor 42a that detects the ambient temperature and a control unit 40 that controls the rotation of the blower 8 according to the time during which the temperature detected by the temperature sensor 42a continues to increase or continues to decrease are provided.
[Selection] Figure 1

Description

  The present invention relates to an air cleaner that blows out air after it is purified.

  Indoor air contains particulates and harmful gases that are harmful to the human body, such as dust, pollen and tobacco smoke. In recent years, as the air density of houses has increased, the degree of retention of these fine particles or gas in the room has increased, while the opportunity for active ventilation has decreased. Under such circumstances, air purifiers having a function of purifying indoor air are becoming widespread.

  The air purifier takes in indoor air through the air filter by the rotation of the blower, collects fine particles in the air, and purifies the air by adsorbing or decomposing harmful gas. Thereafter, the ions released from the ion generator may be included in the purified air. The purified air is returned to the room again from the air outlet of the air purifier.

  Some air purifiers also have a humidifying function in order to adjust the indoor humidity to a value comfortable for the user. In an air purifier having a humidifying function, a humidifying filter soaked with water is disposed so as to block a part or all of the internal air passage, and the air purified by the air filter passes the humidifying filter. When passing, it is humidified (for example, refer patent document 1).

  In addition, the air purifier has the function of taking indoor air through the air filter by the rotation of the blower, purifying the air, and then returning it to the room again from the outlet, and this air flow also functions as a circulator It has been known to be used, and it has been used to eliminate indoor temperature irregularities that occur during heating and cooling (see, for example, Patent Document 2 and Patent Document 3).

If this temperature variation in the room is eliminated by encouraging the circulation of the air in the room, the same sensible temperature can be obtained even if the set temperature is lowered by 1 to 3 ° C for heating and 1 to 3 ° C for cooling. , Energy saving can be realized.
JP 2006-46729 A Japanese Patent Laid-Open No. 2001-41518 JP 2001-56147 A

  However, in the configuration with one temperature sensor described in Patent Document 2, since the timing for stopping the circulation operation is controlled by a preset time, the circulation operation is performed in a state where the temperature unevenness in the room has not been eliminated. May stop, and the power of the air conditioner was consumed as much. In addition, even when the air conditioner is stopped, the circulating operation may continue, and the power of the air cleaner is consumed as much.

  Moreover, in the structure with two temperature sensors of patent document 3, the temperature sensor which detects radiant heat, such as a ceiling surface, is used as a temperature sensor. When such a non-contact type temperature sensor is used, if the ceiling surface or the like is easily affected by the external environment, for example, if detection is performed on the skylight, accurate temperature detection may not be possible. Moreover, even if it detects with respect to the fluorescent lamp of a ceiling surface, accurate temperature detection may not be performed. If there is such a problem, it becomes impossible to control the appropriate circulating operation to reduce the temperature unevenness in the room. In order to solve such a problem, it is conceivable to provide a drive mechanism to swing the temperature sensor. However, if this is done, excessive power consumption may be consumed, or the structure may become complicated and cause a failure. Concerned.

  An object of this invention is to provide the air cleaner which can aim at reduction of power consumption, when it uses together with an air conditioner.

  Another object of the present invention is to provide an air purifier capable of controlling appropriate circulation operation with a simple structure.

  An air purifier according to the present invention includes a blower for sucking air, purifies the air sucked by the blower, and in the air purifier that blows out, a temperature sensor for detecting an ambient temperature, and detection by the temperature sensor And a controller for controlling the rotation of the blower according to the time during which the temperature continues to rise or continues to fall.

  According to the above-described invention, depending on the time during which the temperature continues to rise or continues to fall, for example, it is determined that the air conditioner has stopped operating, and the air purifier's circulator function is automatically stopped. Control the rotation of the blower of the cleaner. Therefore, the circulation operation is not stopped during the air conditioning, and the power consumption of the air conditioner can be reduced. In addition, when the cooling / heating is stopped, the circulation operation is also stopped, so that the power consumption of the air cleaner can be reduced.

  In temperature control, a phenomenon called hunting in which the temperature moves up and down a set value generally occurs. In the present specification, this hunting is called hunting regardless of whether the amplitude decreases, increases, or is constant over time. In addition, the case where the cycle is shortened as time elapses, becomes longer, or is constant is referred to as hunting.

  When such hunting occurs during cooling and heating, when the temperature unevenness in the room decreases and stabilizes, the degree of hunting decreases, and the period (the time between adjacent maximum values or the time between adjacent minimum values) Etc.) becomes longer. Therefore, according to the above invention, in the hunting state, the degree of hunting decreases according to the time during which the temperature continues to rise or continues to fall, the temperature approaches the stable state, and it is determined that the circulating function is unnecessary. The rotation of the air cleaner blower may be controlled so that the circulator function of the air cleaner automatically stops. According to this, it is possible to reduce the power consumption without operating the circulate function of the air purifier excessively.

  In the air cleaner according to the present invention, in addition to the above-described configuration, when the temperature detected by the temperature sensor continues to rise or when the temperature detected continues exceeds a reference time, the rotational speed of the blower It is characterized by controlling to lower.

  According to the above invention, when the time during which the temperature continues to rise or the time during which the temperature continues to fall exceeds the reference time, for example, it is determined that the heater or the air conditioner has stopped operating, and the circulation function is automatically stopped. Thus, since it controls so that the rotation speed of the air blower of an air cleaner may be lowered | hung, the power consumption of an air conditioning machine and the power consumption of an air cleaner can be reduced more reliably.

  Further, according to the above invention, when the time during which the temperature continues to rise or the time during which the temperature continues to fall exceeds the reference time in the hunting state, the degree of hunting is reduced, the temperature approaches the stable state, and it is determined that the circulating function is unnecessary. And you may make it control rotation of an air cleaner so that the circulator function of an air cleaner may stop automatically. According to this, it is possible to reduce the power consumption without operating the circulate function of the air purifier excessively.

  An air purifier according to the present invention includes a blower for sucking air, purifies the air sucked by the blower, and in the air purifier that blows out, a temperature sensor for detecting an ambient temperature, and detection by the temperature sensor And a controller for controlling the rotation of the blower according to the temperature hunting state.

  According to the above invention, according to the state of hunting, it is determined whether the air conditioner is operating or stopped, or whether the temperature is close to a stable state during air conditioning, and the circulator function of the air cleaner is automatically set. Since the rotation of the air cleaner is controlled so as to stop, it is possible to reduce the power consumption by not operating the circulate function of the air cleaner.

  In the air cleaner according to the present invention, in addition to the above configuration, the control unit controls the rotation of the blower according to the maximum value and / or the minimum value of the hunting per reference time. Features.

  According to the above invention, depending on the number of maximum and / or minimum values of hunting per reference time, it is accurately determined whether the air conditioner is operating or stopped, or whether the temperature is close to a stable state during air conditioning. Therefore, the power consumption of the air conditioner and air cleaner can be reduced more reliably.

  In addition to the above configuration, the air cleaner according to the present invention is characterized in that the control unit controls the rotation of the blower according to the hunting cycle.

  According to the above invention, according to the hunting cycle, it is possible to more accurately determine whether the air conditioner is operating or stopped, or whether the temperature is close to a stable state during air conditioning, so the air conditioner can be more reliably The power consumption of the air cleaner can be reduced.

  An air cleaner according to the present invention includes a blower for inhaling air, purifies the air sucked by the blower, and blows out the air, and a contact-type first temperature sensor disposed at the upper part of the main body; A contact-type second temperature sensor disposed at the lower part of the main body, and a control unit for controlling the rotation of the blower according to a temperature difference detected by the first temperature sensor and the second temperature sensor. It is characterized by that.

  The normal height of this type of air purifier is about 60 cm. However, the present inventors have a difference in height of about 50 cm if a contact temperature sensor is attached to each of the upper and lower parts of the main body of the air purifier. It was found that if the temperature was detected by these temperature sensors, the temperature unevenness in the room could be detected sufficiently.

  Therefore, in the above invention, the temperature is accurately detected using the contact-type first temperature sensor and the second temperature sensor respectively disposed on the upper and lower portions of the air purifier main body, and the air purifying is performed according to the temperature difference between them. Since the rotation of the blower of the machine can be controlled, it is possible to control appropriate circulation operation with a simple configuration.

  Here, the temperature sensor can be roughly classified into a contact type that detects a temperature by contacting a substance to be detected and a non-contact type that detects a temperature without contacting the substance to be detected. It is divided into. Among these, the non-contact type temperature sensor includes a type that detects radiant heat described in Patent Document 3, and there is one generally called an infrared temperature sensor. On the other hand, contact temperature sensors include platinum resistance thermometer, thermistor, thermocouple, IC temperature sensor (using transistor temperature characteristics), crystal thermometer (using crystal Y-cut), mercury・ Alcohol thermometers (those using thermal expansion) are listed. Among these, detection results of platinum resistance thermometer, thermistor, thermocouple, IC temperature sensor, quartz thermometer, etc. are electrically output. The electric type is suitable for the present invention.

  The air cleaner according to the present invention has a humidifying function in addition to the above-described configuration.

  An air cleaner having a humidifying function usually includes a humidity sensor. Some air purifiers with a humidifying function include a temperature sensor in addition to perform a humidification control by changing the set value of humidity according to the temperature.

  Therefore, according to the said invention, if it has a humidification function which changes humidity setting value according to temperature and performs humidification control, it is used for humidification control, without adding a temperature sensor newly. A temperature sensor can also be used.

[Embodiment 1]
Hereinafter, one embodiment of an air cleaner concerning the present invention is described based on Drawings 1-6. Here, an air purifier having an ion release function and an air humidification function will be described as an example, but the present invention is not limited to this, and any air purifier having a circulating function can be used. Applicable.

  First, the structure of the air cleaner will be described. FIG. 1 is a schematic perspective view of the air cleaner according to the present embodiment as seen from the front upper right, and FIG. 2 is a schematic right sectional view showing the internal configuration of the air cleaner 1. In the figure, reference numeral 2 denotes a casing, and a front panel 3 is attached to the front side of the casing 2. The housing 2 also has a rectangular opening on the back side, and a rectangular frame is formed inside the opening to accommodate the air filter.

  In the frame body, as an air filter, a deodorizing filter 4 that adsorbs odor components in the air and a dust collecting filter 5 that collects fine dust are stacked and stored in this order from the back side. The back surface side of the frame body is closed by attaching a filter holding frame 6 that also serves as a substantially rectangular dust collecting pre-filter having a large number of ventilation holes in a lattice shape to prevent the air filter from falling off.

  The deodorizing filter 4 is a non-woven fabric made of polyester in which activated carbon is uniformly dispersed and attached to a rectangular frame. The dust collecting filter 5 is a HEPA (High Efficiency Particulate Air) filter, which folds a filter medium composed of an aggregate made of polyester or vinylon nonwoven fabric and a melt blown nonwoven fabric subjected to electric stone processing, and its upper and lower surfaces. A frame material is welded to an antibacterial sheet made of a non-woven fabric subjected to hydroxyapatite processing and thermocompression bonded.

  A humidifier 17 for humidifying the air ventilated from the air filter is disposed in front of the frame. The humidifier 17 has a humidifying filter 14 made of a disc-shaped frame and a folded water absorbing material, and a tray 15 which is arranged below the humidifying filter 14 and below the casing 2 and is detachable from one side. The tray 15 communicates with a water supply tank 16 that is detachable from one side, and water is supplied from the water supply tank 16 to a predetermined water level in a timely manner. The humidifying filter 14 is pivotally supported by the humidifying filter drive motor 7 at the upper end of the column erected in the tray 15, and the lower part is immersed in the water stored in the tray 15, thereby absorbing the water absorbing material. The whole is impregnated with water.

  On the front side of the humidifying filter 14, a partition wall 23 having a large number of ventilation holes is disposed, and the blower 8 is disposed so as to be sandwiched between the partition wall 23 and the front panel 3. The blower 8 includes a fan motor 9 and a fan 10 separated by a partition wall 21. The fan motor 9 is a DC motor whose rotation speed can be easily controlled, and is fixed on the front side of the partition wall 21. The fan 10 employs a low noise turbo fan, but may be another fan such as a propeller fan or a cross flow fan.

  Above the blower 8, an upward ventilation path 11 formed by the partition wall 21 and the partition wall 23 is inclined to the back side and communicates with the exterior. The upper surface of the exterior is formed by a top plate on the front side and an inclined surface that inclines backward from the rear edge of the top plate to the upper edge of the filter presser frame 6. The ventilation path 11 has the blower outlet 11a opened to the upper end part of the said inclined surface, and the wind direction board 12 for changing the direction of the air to blow off is provided in the blower outlet 11a. In the middle of the ventilation path 11, an ion generator 18 for releasing positive and / or negative ions is installed in the air from the fan 10 toward the air outlet 11a.

  On the top plate on the top surface of the exterior, there is arranged an operation display unit 13 having an operation button 48 for turning on / off the power and setting each operation mode, and a display lamp 49a composed of LEDs for displaying each operation mode. Has been.

  The operation button 48 includes a power button for turning on / off the power, an air purification setting button for setting an air purification function, a humidified air purification button for performing humidification, and an ion emission on / off state. Ion release buttons, and a circulate button for manually turning on / off the circulate operation.

  The display lamp 49a includes a power button, an air purification setting button, a humidification setting button, an ion release button, and a circulate button. A power display lamp, an air purification operation mode display lamp, a humidification operation mode display lamp, an ion emission display lamp, and a circular operation mode display lamp for displaying each mode, on / off of ion emission, and the operation mode of circulation. ing.

  In the upper center of the front panel 3, a display lamp 49b for displaying contents detected by each sensor described later is provided. The display lamp 49b includes a humidity display lamp that displays ambient humidity based on the detection value of the humidity sensor 45, a temperature display lamp that displays ambient temperature based on the detection value of the temperature sensor 42a, and tray water level detection. A water supply display lamp is provided for urging the water supply tank 16 to replenish water based on a detection value of a switch 46 (not shown).

  In the above configuration, when the fan motor 9 of the blower 8 rotates, air is sucked from the back side of the filter retainer frame 6. The sucked air is purified by the deodorizing filter 4 and the dust collecting filter 5, passes through the vent hole of the partition wall 23, and is sucked into the fan 10. The air sucked into the fan 10 passes between the fan blades, is pumped from the outer periphery of the fan 10 to the ventilation path 11, and is blown out through the air outlet 11 a.

  Sensors such as a temperature sensor 42a, a humidity sensor 45, a dust sensor 43 (see FIG. 3), and an odor sensor 44 (see FIG. 3) are installed in the upper part of the main body of the air cleaner 1. The temperature sensor 42a detects ambient temperature, the humidity sensor 45 detects ambient humidity, and the dust sensor 43 detects dust and particles floating in the air between the light emitting element and the light receiving element. The odor sensor 44 detects an odor component by utilizing the fact that the resistance value changes due to gas adsorbed on the surface of the metal oxide semiconductor. These sensors are provided in a path before the air sucked by the fan motor 9 and the fan 10 is purified by the deodorizing filter 4 and the dust collecting filter 5. Thereby, the state of air can be detected.

  In this embodiment, the thermistor is used for the temperature sensor 42a, but other contact-type temperature sensors or non-contact-type temperature sensors may be used. In addition, it is not necessary to use a non-contact temperature sensor that complicates the apparatus, and a thermistor, a platinum resistance thermometer, a thermocouple, an IC temperature sensor, a crystal thermometer, etc. This is preferable because the detection result can be directly used for control by the control unit 40 described later.

  The temperature sensor 42a and the humidity sensor 45 may be integrally formed.

  In addition, the installation positions of sensors such as the temperature sensor 42a, the humidity sensor 45, the dust sensor 43, and the odor sensor 44 are not limited to the upper part of the main body of the air cleaner, but the air sucked by the fan motor 9 and the fan 10 is used. It may be anywhere as long as it is in the path before being purified by the deodorizing filter 4 or the dust collecting filter 5.

In the present embodiment, as an example, an opening is provided on the side of the filter retainer frame 6, sensors including a temperature sensor 42 a and a humidity sensor 45 are disposed in the back of the opening, and the fan motor 9, The air sucked by the fan 10 merges with the air sucked from the filter holding frame 6 via sensors and forms a path that reaches the deodorizing filter 4.

  The configuration of the air cleaner 1 has been described above. With respect to the air cleaner 1, a control circuit of the air cleaner according to the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing a schematic configuration of the control system of the present embodiment. The control unit 40 includes a ROM that stores information such as a program, a CPU that executes input / output control and calculation according to a control program stored in advance in the ROM, a RAM that stores temporarily generated information, and an external circuit. It has an input / output interface for input / output.

  The control unit 40 includes a humidity sensor 45 that detects ambient humidity, a temperature sensor 42a that detects ambient temperature, a dust sensor 43 that detects ambient dust, and an odor that detects ambient odors via an input / output interface. A sensor 44 and a tray detection switch 46 (not shown) for detecting the water level of the tray 15 are connected, and the control unit 40 takes in the detection values of these sensors and the detection state of the switches.

  Further, the controller 40 has a wind direction plate drive circuit 50, a blower drive circuit 51, a humidifier drive circuit 52, and an ion generator drive circuit 53 via a stepping motor for the wind direction plate 12 and a fan motor 9 for the blower 8, respectively. The drive motor 7 of the humidification filter 14 of the humidifier 17 and the ion generator 18 are connected. The control unit 40 controls each of the drive circuits based on the operation received from the operation button 48 and the detection values of the sensors and the detection states of the switches. Thereby, the wind direction of the wind direction plate 12, the air volume of the blower 8, the humidification amount of the humidifier 17, and the ion generation amount of the ion generator 18 are controlled.

  Here, the circulating operation is an operation in which the air volume is increased by increasing the rotational speed of the blower 8 of the air cleaner so as to circulate air. The normal operation here excludes an operation in which an abnormal state is detected by sensors (for example, when an odor due to cigarette is detected by the odor sensor 44) and the rotation speed of the blower 8 of the air cleaner is increased.

  The humidification function in the present embodiment controls the humidity to be different in three stages of temperature ranges. Specifically, the humidity is controlled to about 65% at 18 ° C. or lower, the humidity to about 60% at 18 ° C. to 24 ° C., and the humidity to about 55% at 24 ° C. or higher.

  The temperature detection result by the temperature sensor 42a is used for both the control of the circulating operation and the control of the humidifying function.

  Next, the procedure of the control unit of the circular operation using the temperature detection result by the temperature sensor 42a will be described. FIG. 4 is a flowchart showing a processing procedure of the control unit 40 in the automatic setting mode. The following processing is executed by the CPU of the microcomputer in accordance with a control program stored in advance in the microcomputer built-in ROM of the control unit 40. When the control unit 40 receives the setting of the automatic setting mode and the target humidity set from the operation button 48, the control unit 40 turns ON / OFF the drive motor 7 of the humidification filter 14 and the rotation speed of the fan motor 9 of the blower 8. Each is set to a predetermined initial value (in this embodiment, the rotational speed corresponding to the air volume is “weak”), the following processing is started, and the processing is continued until the next operation mode is changed. Further, the drive motor of the fan motor 9 of the blower 8 controls the speed (number of rotations) stepwise from a high speed to a fine speed.

  In the following processing, the control unit 40 controls the blower drive circuit 51 so that the air flow of the air cleaner is switched from the “weak” operation to the “strong” operation when operating the circulate function. explain.

  The control unit 40 detects the width of the temperature change in the past 2 minutes (step S12) in the operating state where the air flow of the air cleaner is “weak” (circulation function OFF) (step S11). When it is determined that the temperature change width is less than 3 ° C. (step S12: less than 3 ° C.), it waits, and when the temperature change width is determined to be 3 ° C. or more (step S12: 3 ° C. or more), the control unit. 40 controls the blower drive circuit 51 so that the air flow of the air cleaner is switched from “weak” (circulation function OFF) to “strong” (circulation function ON) (step S13). The circulate lamp indicating that it is operating is turned on (step S14), and the operation of the timer 1 is started (step S15).

  Subsequently, the control unit 40 determines whether the temperature change is in the increasing direction (step S16). When it is determined that the temperature change is the upward direction (step S16: upward direction), the control unit 40 continues to determine whether the direction of the temperature change is the upward direction (step S17). S17: rising direction), it is determined whether the operating time of the timer 1 exceeds 20 minutes (step S18). When it is determined that it does not exceed 20 minutes (step S18: no), the control unit 40 returns the process to step S17. On the other hand, when it is determined that the temperature change is the descending direction (step S16: descending direction), it is subsequently determined whether the direction of the temperature change is the descending direction (step S19), and when it is determined that the temperature change is the descending direction (step S19: descending). Direction), it is determined whether the operating time of the timer 1 exceeds 20 minutes (step S20). When it is determined that it does not exceed 20 minutes (step S20: no), the control unit 40 returns the process to step S19. When it is determined in step S17 that the direction of temperature change is the descending direction (step S17: descending direction), the control unit 40 clears the count of the timer 1 to “0” and restarts it (step S21). Proceed to step S19. When it is determined in step S19 that the direction of temperature change is the upward direction (step S19: upward direction), the control unit 40 clears the count of the timer 1 to “0” and restarts it (step S22). Proceed to step S17.

  When it is determined in step S18 or step S20 that the operation time of the timer 1 has exceeded 20 minutes, the control unit 40 stops the operation of the timer 1 (step S23), and the air volume is changed from “strong” (circulation function ON). The blower driving circuit 51 is controlled to switch to “weak” (circulation function OFF) operation (step S24), and the circulation lamp is turned off (step S25).

  On the other hand, for example, when the room is large and the circulation function is turned off without reaching the set temperature even if the heating / cooling operation is continued for 20 minutes, only the count setting time of the first timer 1 is extended. What is necessary is just to process with such a flow. For example, a flowchart of the processing procedure of the control unit 40 when the count setting time of the first timer 1 is processed in 60 minutes will be described with reference to FIGS.

  The control unit 40 detects the width of the temperature change in the past two minutes (step S112) in the operation state where the air flow of the air cleaner is “weak” (circulation function OFF) (step S111). When it is determined that the temperature change width is less than 3 ° C. (step S112: less than 3 ° C.), it waits, and when the temperature change width is determined to be 3 ° C. or more (step S112: 3 ° C. or more), the control unit. 40 controls the blower drive circuit 51 to switch the air flow of the air cleaner from “weak” (circulation function OFF) to “strong” (circulation function ON) (step S113). The circulate lamp indicating that it is operating is turned on (step S114), the hunting flag is set to “0” (step S115), and the operation of the timer 1 is started (step S116).

  Subsequently, the control unit 40 determines whether the temperature change is in the increasing direction (step S117). When it is determined that the temperature change is the upward direction (step S117: upward direction), the control unit 40 continues to determine whether the temperature change direction is the upward direction (step S118). S118: rising direction), it is determined whether the hunting flag is 1 (step S119). When it is determined as 0 (step S119: 0), it is determined whether the operation time of the timer 1 exceeds 60 minutes (step S121). When it is determined that it has not exceeded 60 minutes (step S121: no), the control unit 40 returns the process to step S118. When it is determined that the hunting flag is 1 (step S119: 1), it is determined whether the operation time of the timer 1 exceeds 20 minutes (step S120). When it is determined that it does not exceed 20 minutes (step S120: no), the control unit 40 returns the process to step S118. On the other hand, when it is determined that the temperature change is in the descending direction (step S117: descending direction), it is subsequently determined whether the direction of the temperature change is the descending direction (step S122), and when it is determined that the temperature change is in the descending direction (step S122: descending). Direction), it is determined whether the hunting flag is 1 (step S123). When it is determined as 0 (step S123: 0), it is determined whether the operation time of the timer 1 exceeds 60 minutes (step S125). When it is determined that it has not exceeded 60 minutes (step S125: no), the control unit 40 returns the process to step S122. When it is determined that the hunting flag is 1 (step S123: 1), it is determined whether the operation time of the timer 1 exceeds 20 minutes (step S124). When it is determined that it does not exceed 20 minutes (step S124: no), the control unit 40 returns the process to step S122.

  When it is determined in step S118 that the temperature change is in the downward direction (step S118: downward direction), the control unit 40 sets the hunting flag to “1” (step S126) and clears the count of timer 1 to “0”. The process is restarted (step S127), and the process proceeds to step S122. When it is determined in step S122 that the temperature change is in the upward direction (step S122: upward direction), the control unit 40 sets the hunting flag to “1” (step S128) and clears the timer 1 count to “0”. The process is restarted (step S129), and the process proceeds to step S118.

  When it is determined in step S121 or step S125 that the operation time of the timer 1 has exceeded 60 minutes, and in step S120 or step S124, it is determined that the operation time of the timer 1 has exceeded 20 minutes, the control unit 40 Is stopped (step S130), and the air flow drive circuit 51 is controlled to switch the air volume from “strong” (circulation function ON) to “weak” (circulation function OFF) (step S131). The lamp is turned off (step S132).

  In the step of determining whether the temperature change is upward or downward, the temperature is detected every 30 seconds or every minute and is determined based on the temperature difference between them. It is not limited to this, and may be set as appropriate according to the control method. In addition, the temperature detection value by the temperature sensor varies slightly depending on the measurement accuracy and environmental changes (see FIGS. 8 and 9 to be described later). If the temperature detection interval is set in consideration of this, Good.

  The operation time of the timer 1 may be set as appropriate, but is set to a sufficiently long time so that a malfunction does not occur (circulation operation stops) when a person opens and closes the door and the temperature drops rapidly. Is preferred.

  Next, the temperature change when the air cleaner of this embodiment is used and when it is not used will be compared and described. FIG. 6 is a graph of a temperature transition between when the circulating operation is performed and when the circulating operation is not performed, from when the heater is started to when it is stopped. The vertical axis represents the temperature detected by the temperature sensor, and the horizontal axis represents the passage of time. The dotted line is for the case with the circulation operation (using the air cleaner of the present embodiment), and the solid line is for the case of no circulation operation (not using the air cleaner of the present embodiment).

  When the heater is operated, the temperature rises toward the set temperature of the heater. At this time, if there is a temperature rise of 3 ° C or more in 2 minutes, the circulator function of the air cleaner starts to operate (control the rotation of the blower so that the air flow of the air cleaner is switched from weak to strong. To do).

  After the heating operation is started, the temperature detected by the temperature sensor rises toward the set temperature of the heater and then overshoots. Thereafter, a state in which the temperature repeatedly rises or falls with respect to the set temperature and undulates, so-called hunting occurs.

  In the specification of the present application, hunting refers to a state in which the temperature repeatedly rises and falls with respect to the set temperature of a heater, a cooling machine, etc., and the amplitude is constant or increases with time. And those whose amplitude is attenuated. In addition, hunting includes those with a constant cycle, those with a longer cycle, and those with a shorter cycle over time. In general, the larger the width of the hunting amplitude with respect to the set temperature, the larger the temperature unevenness, and the smaller the width, the less the temperature unevenness. The less the temperature unevenness in the room over time, the less the degree of hunting. .

  Here, in the case of the circular operation, the amplitude is smaller than in the case of no circular operation, and the temperature unevenness is reduced.

  Further, during the heating operation, the temperature changes from rising to falling or falling to rising within a preset reference time, for example, within 20 minutes, and the circulate function of the air purifier continues to operate.

  Next, the heater is stopped. Then, the temperature detected by the temperature sensor starts to fall. If the temperature continues to drop for more than 20 minutes, the preset reference time from when the temperature changes from rising to falling, the controller determines that the heater has stopped and automatically cleans the air. Stop the machine's circular operation.

  Although the case where the heater is operated has been described here, the same applies to the case where the air conditioner is operated.

  In addition, the condition for starting the operation of the circulate function is not limited to a temperature change of 3 ° C. or more in 2 minutes, but is set to a temperature change of 3 ° C. or more in 3 minutes. You may set suitably according to a surrounding environment etc.

  Further, the reference time set in advance is not limited to 20 minutes, and may be set as appropriate according to the use environment.

  As described above, according to the present embodiment, it is determined that the air conditioner has stopped operating according to the time during which the temperature continues to rise or continues to fall, and the circulation function of the air purifier is automatically activated. Since the rotation of the blower of the air purifier can be controlled so that it stops, the circular operation will not stop when the temperature is uneven during air conditioning, saving power consumption during air conditioning .

  Also, in the hunting state, depending on the time during which the temperature continues to rise or fall, the degree of hunting decreases, the temperature approaches the stable state, and it is determined that the circulate function is not necessary. Since the rotation of the blower of the air cleaner can be controlled so that the function automatically stops, the power consumption can be reduced without extra operation of the circulate function of the air cleaner.

  In addition, it becomes possible to automatically detect that the air conditioner has been started or stopped, and the circulator function of the air purifier can be automatically started or stopped accordingly. The power consumption of the air cleaner can be reduced.

[Embodiment 2]
It will be as follows if other embodiment regarding the air cleaner which concerns on this invention is described based on FIGS. For convenience of explanation, members having the same functions as those in the drawings described in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  Since the structure and control circuit of the air cleaner are the same as those in the first embodiment, first, the processing procedure of the control unit will be described.

  The steps (steps S211 to S212) for detecting the width of the temperature change in the past two minutes from the start of the processing are the same as in the first embodiment.

  Subsequently, the control unit 40 determines whether or not the temperature change is in the increasing direction (step S213). When it is determined that the temperature change is in the increasing direction (step S213: increasing direction), the control unit 40 continues to change in temperature. It is determined whether the direction is downward (step S214). When it is determined that the direction is ascending (step S214: ascending direction), it stands by, and when it is determined that it is descending (step S214: descending direction), the air volume of the air cleaner is changed from “weak” (circulation function OFF) to “strong”. The blower drive circuit 51 is controlled to switch to the operation of “(circulation function ON)” (step S216). On the other hand, when it is determined that the temperature change is in the downward direction (step S213: downward direction), it is determined whether the temperature change is in the upward direction (step S215). When it is determined that the air flow is in the descending direction (step S215: descending direction), it stands by, and when it is determined that it is in the ascending direction (step S215: upward direction), the air volume of the air cleaner is changed from “weak” (circulation function OFF) to “strong”. The blower drive circuit 51 is controlled to switch to the operation of “(circulation function ON)” (step S216).

  The controller 40 turns on the circulate lamp indicating that the circulate function is operating (step S217), and starts the operation of the timer 1 (step S218).

  Subsequently, the control unit 40 counts the number of maximum and minimum values due to hunting (step S219), and determines whether the operation time of the timer 1 exceeds 20 minutes (step S220). Here, when it is determined that it does not exceed 20 minutes (step S220: no), the step is returned to S219. When it determines with having exceeded 20 minutes (step S220: yes), the control part 40 determines whether there are one or more of the number of the maximum value and minimum value by hunting (step S221). When it is determined that there are one or more of both (step S221: yes), the control unit 40 clears the count of the timer 1 to “0” and restarts it (step S222), and returns the process to step S219. When there is no maximum value or minimum value (step S221: no), the timer 1 is stopped (step S223), and the air volume is changed from “strong” (circulation function ON) to “weak” (circulate). The blower drive circuit 51 is controlled to switch to the operation of function OFF) (step S224), and the circulate lamp is turned off (step S225).

  In the step of determining whether the temperature change is upward or downward, the temperature is detected every 30 seconds or every minute and is determined based on the temperature difference between them. It is not limited to this, and may be set as appropriate according to the control method. In addition, the temperature detection value by the temperature sensor varies slightly depending on the measurement accuracy and environmental changes (see FIGS. 8 and 9 to be described later). If the temperature detection interval is set in consideration of this, Good.

  The operation time of the timer 1 may be set as appropriate, but is set to a sufficiently long time so that a malfunction does not occur (circulation operation stops) when a person opens and closes the door and the temperature drops rapidly. Is preferred.

  In the processing procedure shown in FIG. 7, the order of steps S213 to S215 and steps S216 to S217 may be switched.

  In the processing procedure shown in FIG. 7, the order of steps S216 to S217 and step S218 may be switched.

  8 and 9 are graphs showing the temperature change in the room when the heating operation is performed. The vertical axis represents the temperature detected by the temperature sensor, and the horizontal axis represents the passage of time. The outside air is 5 ° C, and the set temperature of the air conditioner is 20 ° C.

  8 and 9 are graphs of values obtained by actually measuring the temperature detected by the temperature sensor, and the temperature detection value by the temperature sensor varies slightly depending on measurement accuracy and environmental changes. FIG. 6 described above is a graph schematically illustrating the above variations.

  When the room is closed, the temperature rises slowly over time from around 15.5 ° C. to around 16.5 ° C. due to the external environment.

  Here, when the operation of the heater is started, the temperature starts to increase from around 16.5 ° C. toward 20 ° C., which is the set temperature of the air conditioner. Thereafter, the temperature exceeds the set temperature, overshoots and rises to around 22.5 ° C., then falls to around 21 ° C., and enters a hunting state centering around 21.5 ° C. Then, the hunting amplitude decreases with time, and the hunting cycle becomes longer. In this way, the degree of hunting is reduced and temperature unevenness is eliminated.

  In the air purifier of the present embodiment, after the temperature overshoots and rises to around 22.5 ° C., the time when the temperature starts to fall is set as the start time of the reference time (timer 1 starts counting). Thereafter, the hunting state is monitored every preset reference time T (for example, 20 minutes).

  In addition, monitoring the state of hunting means the number of local maximum values due to hunting, the number of local minimum values due to hunting, the number of local maximum values and local minimum values due to hunting, the amplitude of hunting, and the hunting cycle (between adjacent local maximum values). Monitoring at least one of time, time between adjacent local minima, etc.).

  The start time of the reference time can be set to the time when the circulate function starts, or to the time of any maximum or minimum value, but when the amplitude of hunting is large, the start time of the reference time is It is preferable to set.

  FIG. 8 shows a pattern in which there is one maximum value and one minimum value at the reference time T (for example, 20 minutes). When there are one or more local maximum values and local minimum values per reference time, it is assumed that the temperature unevenness has not been resolved, and the circulation function of the air purifier continues to operate.

  FIG. 9 shows a pattern with a maximum value but no minimum value at a reference time T (for example, 20 minutes). If there is no maximum or minimum value per reference time, it is determined that the heater has stopped operating, or the temperature unevenness has been resolved and the hunting cycle has been extended to determine that the circulate function is not required. Thus, the circulation function of the air purifier stops operation.

  In this way, by monitoring the maximum value and / or the minimum value per reference time, the hunting state is grasped, and the rotation of the blower of the air cleaner is controlled accordingly. Thus, for example, when the air conditioner is in operation, the circulate function automatically operates to save power consumption of the air conditioner, and when the air conditioner stops operating, the circulator function is automatically stopped and the air purifier Power consumption can be reduced.

  When the time from the maximum value of hunting to the minimum value or from the minimum value to the maximum value (corresponding to 1/2 cycle of hunting) exceeds the reference time T (for example, 20 minutes), the circulation function is stopped. May be. According to this, the temperature unevenness is eliminated, the degree of hunting is reduced, and it is judged that the hunting cycle has been extended, and the power consumption of the air cleaner can be reduced by automatically stopping the circulation function.

  Further, the circulation function may be stopped according to the hunting cycle.

  Further, the strength of the operation of the circulating function may be adjusted according to the number of maximum and / or minimum values of hunting within the reference time. According to this, when the number of local maximum values and / or local minimum values is large (when the temperature unevenness is large), the circulation function is operated strongly, and when the number of local maximum values and / or local minimum values is small (the temperature unevenness is small). ) Can operate the circulate function weakly, and can reduce the power consumption of the air conditioner.

  Further, the strength of the operation of the circulating function may be adjusted according to the magnitude of the hunting amplitude. According to this, when the amplitude width is large (temperature unevenness is large), the circulator function is operated strongly, and when the amplitude width is small (temperature unevenness is small), the circulate function is operated weakly, The strength of the rate function can be appropriately operated according to the temperature unevenness on the spot, and low power consumption of the air cleaner can be achieved.

  As described above, according to the present embodiment, it is determined that the air conditioner has stopped operating according to the state of hunting, and the circulate function of the air purifier automatically stops. Therefore, the circulation operation is not stopped and the power consumption during air conditioning can be saved.

  Also, in the hunting state, depending on the time during which the temperature continues to rise or fall, the degree of hunting decreases, the temperature approaches the stable state, and it is determined that the circulate function is not necessary. Since the rotation of the blower of the air cleaner can be controlled so that the function automatically stops, the power consumption can be reduced without extra operation of the circulate function of the air cleaner.

  Furthermore, it can be determined that the air conditioner has stopped operating according to the hunting state, and the circulator function of the air purifier can be automatically stopped accordingly. Can be planned.

[Embodiment 3]
It will be as follows if other embodiment regarding the air cleaner which concerns on this invention is described based on FIGS. For convenience of explanation, members having the same functions as those in the drawings described in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  First, the structure of the air cleaner of this embodiment will be described. FIG. 10 is a schematic perspective view of the air cleaner according to the present embodiment as viewed from the front upper right.

  In the present embodiment, in addition to the configuration of the first embodiment, a temperature sensor 42b is provided.

  The temperature sensor 42 b is installed at a location 5 cm high from the bottom surface of the main body of the air purifier 1, and the temperature sensor 42 a is installed at a location 55 cm high from the bottom surface of the main body of the air purifier 1. Thereby, the temperature near the lower part of the air cleaner is detected by the temperature sensor 42b, and the temperature near the upper part of the air cleaner is detected by the temperature sensor 42a.

  In the present embodiment, the distance between the temperature sensor 42a and the temperature sensor 42b is about 50 cm. However, the larger the distance, the more preferable, but the distance is not limited to 50 cm. Considering the measurement error of the temperature sensor, It suffices if the distance that causes the temperature difference between the temperatures detected by the two temperature sensors is long. The number is not limited to two, and three or more may be installed.

  Further, the temperature sensor 42 b is installed in a path before the air sucked by the fan motor 9 and the fan 10 is purified by the deodorizing filter 4 and the dust collection filter 5. In the present embodiment, the temperature sensor 42 b is provided with an opening on the side of the filter pressing frame 6 and is disposed at the back of the opening. The air sucked by the fan motor 9 and the fan 10 from the opening merges with the air sucked from the filter holding frame 6 via the temperature sensor 42b, and forms a path that reaches the deodorizing filter 4. Yes.

  The thermistors are used for the temperature sensors 42a and 42b, but other temperature sensors may be used as long as they are contact temperature sensors. Further, a thermistor, a platinum resistance thermometer, a thermocouple, an IC temperature sensor, a crystal thermometer, and the like that electrically output the detection result are preferable because the detection result can be directly used for control by the control unit 40. The contact type temperature sensor is used because a non-contact type temperature sensor cannot accurately detect the temperature when the ceiling surface is easily affected by the external environment. This is because the temperature difference cannot be accurately detected, and appropriate circular operation control for reducing the temperature unevenness in the room cannot be performed.

  The display lamp 49b is provided with temperature display lamps 1-3 that change the display state based on the temperature difference between the temperatures detected by the temperature sensor 42a and the temperature sensor 42b.

  Then, with reference to FIG. 11, the control circuit of the air cleaner which concerns on this invention is demonstrated. FIG. 11 is a block diagram showing a schematic configuration of a control system of the air purifier according to the present invention.

  A humidity sensor 45, a temperature sensor 42a, a temperature sensor 42b, a dust sensor 43 for detecting ambient dust, and an odor sensor 44 for detecting ambient odor are connected to the control unit 40 via an input / output interface. Reference numeral 40 captures detection values of these sensors and detection states of the switches.

  Further, the controller 40 has a wind direction plate drive circuit 50, a blower drive circuit 51, a humidifier drive circuit 52, and an ion generator drive circuit 53 via a stepping motor for the wind direction plate 12 and a fan motor 9 for the blower 8, respectively. The drive motor 7 of the humidification filter 14 of the humidifier 17 and the ion generator 18 are connected. The control unit 40 controls each of the drive circuits based on the operation received from the operation button 48 and the detection values of the sensors and the detection states of the switches. Thereby, the wind direction of the wind direction plate 12, the air volume of the blower 8, the humidification amount of the humidifier 17, and the ion generation amount of the ion generator 18 are controlled. The control unit 40 is different from the first embodiment in that the temperature difference between the temperature sensor 42a and the temperature sensor 42b is detected, the blower drive circuit 51 is controlled based on the detected value, and the air volume of the blower 8 is controlled. ing.

  FIG. 12 is a flowchart illustrating a processing procedure of the control unit 40 in the automatic setting mode of the present embodiment. The temperature detected by the temperature sensor 42a will be described as TEMP1, and the temperature detected by the temperature sensor 42b will be described as TEMP2.

  The control unit 40 turns off the temperature display lamps 1 to 3 (step S312) in the operation state where the air flow of the air cleaner is “weak” (circulation function OFF) (step S311), and the temperature sensor 42a and the temperature sensor 42b. Thus, TEMP1 and TEMP2 are detected (step S313). Subsequently, the control unit 40 determines the temperature difference between TEMP1 and TEMP2 (step S314). When the temperature difference is determined to be less than 1.5 ° C. (step S314: less than 1.5 ° C.), the control unit 40 waits for the temperature difference. When the difference is determined to be 1.5 ° C. or more (step S314: 1.5 ° C. or more), the air flow of the air cleaner is changed from “weak” (circulation function OFF) to “strong” (circulation function ON). The blower driving circuit 51 is controlled so as to switch to the operation (step S315). Next, it is determined whether TEMP1 is greater than TEMP2 (step S316). If it is determined that TEMP1 is high (step S316: yes), the temperature display lamp 1 and the temperature display lamp 2 are turned on, and the temperature display lamp 3 Is turned off (step S317). When it is determined that TEMP1 is low (step S316: no), the temperature display lamp 2 and the temperature display lamp 3 are turned on and the temperature display lamp 1 is turned off (step S318).

  Next, the control unit 40 determines whether or not a predetermined time has elapsed (step S319). If it is determined that the predetermined time has not elapsed (step S319: no), the control unit 40 stands by.

  The predetermined time in this case determines the processing cycle of the control unit 40 and is not limited to a specific time.

  When it is determined that the predetermined time has elapsed (step S319: yes), the temperature difference between TEMP1 and TEMP2 is determined (step S320), and when the temperature difference is determined to be 1.5 ° C. or more (step S320: 1.. The process returns to step S316. When it is determined that the temperature difference is less than 1.5 ° C. (step S320: less than 1.5 ° C.), the air flow of the air cleaner is changed from “strong” (circulation function ON) to “weak” (circulation function OFF). (Step S321), and all the temperature display lamps 1 to 3 are turned off (step S322).

  In the step of determining whether the temperature change is upward or downward, the temperature is detected every 30 seconds or every minute and is determined based on the temperature difference between them. It is not limited to this, and may be set as appropriate according to the control method. Further, the temperature detection value by the temperature sensor varies slightly depending on the measurement accuracy and environmental change, and the temperature detection interval may be set in consideration thereof.

  The controller 40 may control the blower drive circuit 51 to increase the air volume of the blower 8 as the temperature difference between the temperature sensor 42a and the temperature sensor 42b increases. According to this, temperature unevenness can be more effectively eliminated.

  FIG. 13 shows a display state of the temperature display lamps 1 to 3 described above. As an example in the present embodiment, the display states of the temperature display lamps 1 to 3 are shown according to the detection values of the temperature sensor 42a and the temperature sensor 42b.

  The temperature display lamp 1 and the temperature display lamp 3 are displayed in a warm color system such as “orange”, and the temperature display lamp 2 is displayed in a cold color system such as “blue”.

  FIG. 13A shows a state where all of the temperature display lamps 1 to 3 are turned off when the temperature difference between TEMP1 and TEMP2 is less than 1.5 ° C.

FIG. 13B shows a display in which TEMP1 is higher than TEMP2, the temperature display lamp 1 is lit in a warm color, the temperature display lamp 2 is lit in a cold color, and the temperature display lamp 3 is turned off. It is. Thereby, the user (user) can visually recognize that the indoor temperature is higher in the vicinity of the ceiling than in the vicinity of the floor by looking at this display. FIG. When the temperature is lower than TEMP2, the temperature display lamp 1 is turned off, the temperature display lamp 2 is lit in a cool color, and the temperature display lamp 3 is lit in a warm color. Thereby, the user (user) can visually recognize that the indoor temperature is higher in the vicinity of the floor than in the vicinity of the ceiling.

  As described above, according to the present embodiment, appropriate circular operation can be controlled with a simple structure.

[Embodiment 4]
Other embodiment regarding the air cleaner which concerns on this invention is described based on FIGS. For convenience of explanation, members having the same functions as those in the drawings described in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the air cleaner according to the present embodiment shown in FIG. 14, an opening is provided on the bottom surface side of the housing 2, and a floor temperature sensor 42 c for detecting combined heating with a hot carpet is installed inside the opening. Except for this point, it has the same structure as the first embodiment.

  FIG. 15 is a block diagram illustrating a schematic configuration of a control system of the air cleaner according to the present embodiment. A humidity sensor 45, a temperature sensor 42a, a floor temperature sensor 42c, a dust sensor 43 for detecting ambient dust, and an odor sensor 44 for detecting ambient odor are connected to the control unit 40 via an input / output interface. The unit 40 captures the detection values of these sensors and the detection state of the switches. Embodiment 1 except that the floor temperature sensor 42c for detecting combined heating with a hot carpet detects the temperature, controls the blower drive circuit 51 based on the detected value, and controls the air volume of the blower 8. Is the same control system.

  FIG. 16 is a flowchart showing a processing procedure of the control unit 40 of the air cleaner according to the present embodiment. The processing procedure of the control unit 40 determines whether or not the detected temperature of the floor temperature sensor 42c is 35 ° C. or higher between steps S11 and S111 and steps S12 and S112 of the first embodiment (FIGS. 4 and 5). If the temperature is 35 ° C. or higher, the process waits, and if the temperature is 35 ° C. or lower, the process proceeds to the next step.

  Further, the display lamp 49b is provided with a temperature display lamp that is lit in a warm color when the hot carpet is operating. Thereby, the user (user) can grasp that the hot carpet operates and the circulate function of the air purifier is stopped by looking at this display.

  As described above, according to the present embodiment, the temperature near the floor surface is detected by the floor temperature sensor 42c, and for example, when 35 ° C. or more is detected, it is determined that the hot carpet is operating (generally, When the hot carpet is used, the floor surface temperature is about 40 ° C. to 45 ° C.), and the circulation function can be controlled to stop. As a result, when it is desirable to keep the temperature of the sensation high by suppressing the wind speed in the room, such as when using a hot carpet, the circulation function can be stopped to save power consumption.

[Embodiment 5]
Other embodiment regarding the air cleaner which concerns on this invention is described based on FIGS. The structure of the air cleaner according to the present embodiment has an opening on the bottom surface side of the housing 2, and a temperature sensor 42c for detecting combined heating with a hot carpet is installed inside the opening. Other than that, it has the same structure as the third embodiment (FIG. 10).

  FIG. 17 is a block diagram illustrating a schematic configuration of a control system of the air purifier according to the present embodiment. The control unit 40 includes a humidity sensor 45, a temperature sensor 42a, a temperature sensor 42b, a floor temperature sensor 42c, a dust sensor 43 for detecting surrounding dust, and an odor sensor 44 for detecting surrounding odors via an input / output interface. Connected, the control unit 40 captures the detection values of these sensors and the detection state of the switches. The control system is the same as that of the third embodiment except that the floor temperature sensor 42c detects the temperature and controls the blower drive circuit 51 to control the air volume of the blower 8 based on the detected value.

  FIG. 18 is a flowchart showing a processing procedure of the control unit 40 of the air cleaner according to the present embodiment. The processing procedure of the control unit 40 newly determines whether or not the detected temperature of the floor temperature sensor 42c is 35 ° C. or higher between Step S312 and Step S313 of Embodiment 3 (FIG. 12), and is 35 ° C. or higher. In the case of, a process is provided for waiting, and in the case of 35 ° C. or lower, the process proceeds to the next step.

  Further, as shown in FIG. 19, in addition to the temperature display lamp of the third embodiment (FIG. 13), a temperature display lamp 4 that is lit in a warm color when the hot carpet is operating is provided separately. Thereby, the user (user) can grasp that the hot carpet operates and the circulate function of the air purifier is stopped by looking at this display.

  As described above, according to the present embodiment, the temperature near the floor surface is detected by the floor temperature sensor 42c, and for example, when 35 ° C. or more is detected, it is determined that the hot carpet is operating (generally, When the hot carpet is used, the floor surface temperature is about 40 ° C. to 45 ° C.), and the rotation of the blower of the air purifier can be controlled so as to stop the circulation function. As a result, when it is desirable to keep the temperature of the sensation high by suppressing the wind speed in the room, such as when using a hot carpet, the circulation function can be stopped to save power consumption.

It is the schematic perspective view which looked at the air cleaner of Embodiment 1 from the front upper right. It is a schematic right cross-sectional view showing the internal configuration of the air cleaner according to the first embodiment. It is a block diagram which shows schematic structure of the control system of the air cleaner of Embodiment 1. FIG. 3 is a flowchart illustrating a processing procedure of a control unit according to the first embodiment. 3 is a flowchart illustrating a processing procedure of a control unit according to the first embodiment. 3 is a flowchart illustrating a processing procedure of a control unit according to the first embodiment. 3 is a flowchart illustrating a processing procedure of a control unit according to the first embodiment. It is a graph of the temperature transition with the case where a circular operation is performed and the case where a circular operation is not performed. 10 is a flowchart illustrating a processing procedure of a control unit according to the second embodiment. It is the graph which showed the temperature change when heating operation is performed. It is the graph which showed the temperature change when heating operation is performed. It is the schematic perspective view which looked at the air cleaner of Embodiment 3 from the front upper right. It is a block diagram which shows schematic structure of the control system of the air cleaner of Embodiment 3. 10 is a flowchart illustrating a processing procedure of a control unit according to the third embodiment. It is a display figure of a temperature display lamp. It is the schematic perspective view which looked at the air cleaner of Embodiment 4 from the front upper right. It is a block diagram which shows schematic structure of the control system of the air cleaner of Embodiment 4. 10 is a flowchart illustrating a processing procedure of a control unit according to the fourth embodiment. It is a block diagram which shows schematic structure of the control system of the air cleaner of Embodiment 5. 10 is a flowchart illustrating a processing procedure of a control unit according to the fifth embodiment. It is a display figure of a temperature display lamp.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air cleaner 2 Case 6 Filter press frame 8 Blower 9 Fan motor 10 Fan 13 Operation display part 17 Humidifier 40 Control part 42a, 42b Temperature sensor 42c Floor temperature sensor 45 Humidity sensor 48 Operation button 49a, 49b Display lamp 51 Blower Drive circuit 52 Humidifier drive circuit

Claims (8)

In an air purifier that includes a blower for sucking air, purifies the air sucked by the blower, and blows out the air.
A temperature sensor for detecting the ambient temperature;
An air cleaner, comprising: a controller that controls rotation of the blower according to a time during which the temperature detected by the temperature sensor continues to rise or continues to fall.   2. The control unit according to claim 1, wherein when the temperature detected by the temperature sensor continues to rise or when the temperature continues to fall exceeds a reference time, the controller controls to reduce the rotational speed of the blower. Air purifier. In an air purifier that includes a blower for sucking air, purifies the air sucked by the blower, and blows out the air.
A temperature sensor for detecting the ambient temperature;
An air cleaner comprising: a control unit that controls rotation of the blower according to a hunting state of the temperature detected by the temperature sensor.   The said control part controls rotation of the said air blower according to the number of the maximum value of the said hunting per reference time, and / or the number of minimum values, The air cleaner of Claim 3 characterized by the above-mentioned.   The air cleaner according to claim 3 or 4, wherein the control unit controls rotation of the blower according to the hunting cycle.   The said control part controls rotation of the said air blower according to the amplitude of the said hunting, The air cleaner of any one of Claims 3-5 characterized by the above-mentioned. In an air purifier that includes a blower for sucking air, purifies the air sucked by the blower, and blows out the air.
A contact-type first temperature sensor disposed at the top of the main body;
A contact-type second temperature sensor disposed at the bottom of the main body;
An air cleaner, comprising: a control unit that controls rotation of the blower according to a temperature difference detected between the first temperature sensor and the second temperature sensor.   The air cleaner according to any one of claims 1 to 7, wherein the air cleaner has a humidifying function.