JP2010240233A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air cleaner using an oxidation catalyst maintaining its performance for a long period of time. <P>SOLUTION: As shown in Fig.1, inside an air cleaner body 10, a dust collecting filter 6 which removes soils of particles such as dust, an adsorption deodorizing filter 4 which adsorbs gas in the air as a deodorizing means A5, a set of oxidation catalyst filters 1 consisting of the oxidation catalyst as a deodorizing means B3, and a heating means 2 for heating the oxidation catalyst filters 1 are arranged in order from the side of an air intake 8. Since the adsorption deodorizing filter 4 and the oxidation catalyst filters 1 are used in combination, successful deodorizing performance is obtained even when operation time of a heating means 15 is shortened. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an air purifier that detects dirt in the air, performs automatic operation, and purifies contaminated air with a gas adsorbent and an oxidation catalyst.

  A conventional air cleaner will be described with reference to FIGS. In FIG. 14, 101 is a main body of the air cleaner, 102 is a blower that generates a suction force for sucking air, and 103 is a suction port for sucking air into the inside from the outside of the main body 101. Reference numeral 104 denotes a filter that adsorbs dirt of particles such as dust and removes the dust, and is disposed on the downstream side of the suction port 103. Reference numeral 105 denotes an exhaust port for discharging clean air. Reference numeral 106 denotes an oxidation catalyst and an adsorbent 107 that are disposed on the downstream side of the filter 104. A heating means 108 activates the deodorizing ability of the oxidation catalyst 106 by heat.

  In the above configuration, when the operation is started, the blower 102 operates, generates a suction force, sucks air from the suction port 103 provided on the front surface, and the filter 104 removes mainly dirt such as particles. Then, deodorization is performed by the oxidation catalyst 106 and the adsorbent 107, and clean air is discharged from the exhaust port 105.

  The oxidation catalyst is deodorized by exciting its ability to be oxidized by heating and oxidatively degrading malodorous components such as ammonia and acetaldehyde into odorless components such as carbon dioxide.

  FIG. 15 shows a block diagram of the control system.

  In the figure, 109 is a gas sensor that detects the degree of air contamination, 110 is an oxidation catalyst that specifically removes contamination of gas components, 111 is a heating means that excites the deodorizing ability of the oxidation catalyst 110 by heating, 112 Is a control means for controlling ON and OFF of the heating means 111 based on the degree of air contamination from the gas sensor 109, and the oxidation catalyst 110 and the heating means 111 constitute a deodorizing means 113. Reference numeral 114 denotes an electric blower that generates a suction force for sucking air, and reference numeral 115 denotes an operation for controlling the number of revolutions of the electric blower 114 with an amount of suction corresponding to the degree of air contamination based on the degree of air contamination from the gas sensor 109. It is a control means.

When the degree of air contamination detected by the gas sensor 109 is greater than the predetermined degree of contamination, the control unit 112 turns on the heating unit 111 to excite the deodorizing ability of the oxidation catalyst 110 and the degree of contamination detected by the gas sensor 109 is low. In that case, the heating means 111 is turned off (see Patent Document 1).
Japanese Patent Laid-Open No. 3-68419

  In such a conventional air purifier, it is necessary to turn on the heating means in order to exert the deodorizing ability of the oxidation catalyst, the energy consumed by heating increases, and the heating means is replaced due to the life of the heating means. Needed maintenance such as to do.

  Further, if the heating time is insufficient, dirt may accumulate on the oxidation catalyst and the deodorizing performance may be deteriorated.

  The present invention solves such a conventional problem, and includes a deodorizing means A composed of a gas adsorbent and a deodorizing means B composed of an oxidation catalyst and a heating means as a deodorizing means, and a sensor for detecting the degree of air contamination. Since the operation of the heating means for heating the oxidation catalyst is controlled according to the output of the air, the heating means is controlled so that the oxidation catalyst is heated only when the air is dirty, and the heating time is secured while ensuring the air cleaning capability. The purpose is to save energy and to extend the life of heating means while keeping it to the minimum necessary level.

  Another object of the present invention is to maintain the deodorization performance over a long period of time by sufficiently heating the oxidation catalyst to suppress deterioration.

  Another object of the present invention is to operate the heating means at a more effective timing and to fully exhibit the performance of the oxidation catalyst.

  In order to achieve the above object, the air cleaner of the present invention includes a sensor for detecting the degree of air contamination, a deodorizing means A having a gas adsorbent, and an oxidation catalyst and a heating means for heating the oxidation catalyst. A deodorizing means B and a control means for controlling the heating means in accordance with the degree of air contamination detected by the sensor, and an air purifier for purifying air by the deodorizing means A and the deodorizing means B are provided. Is.

  By this means, it is possible to improve the deodorizing performance and save energy and prolong the life of the heating means.

  The other means includes a sensor for detecting a degree of air contamination, a deodorizing means C having a gas adsorbent, an oxidation catalyst, and a heating means for heating the oxidation catalyst, and a degree of air contamination detected by the sensor. And a control means for controlling the heating means according to the above, and an air purifier for purifying the air by the deodorizing means C.

  The other means controls the heating means to operate from the time when the degree of contamination detected by the sensor is lower than the predetermined degree of contamination, and to stop the heating means when the air becomes clean. .

  Further, the other means operates the heating means from the time when the degree of contamination detected by the sensor becomes lower than the predetermined degree of dirt, and stops the heating means when a certain time has elapsed from the time when the air becomes clean. It is something to control.

  Further, the other means has a change amount detecting means for detecting a change amount of the degree of dirt detected by the sensor, and the heating means from the time when the change amount detected by the change amount detecting means becomes lower than a predetermined change amount. Is operated to control the heating means to stop when the air becomes clean.

  The other means has a sensor for detecting the degree of air contamination and a sensor for detecting a person, and controls the heating means to operate when the sensor for detecting the person detects the person. It is.

  Another means is that the sensor for detecting a person is a pyroelectric sensor.

  Another means is that the sensor for detecting a person is a sensor for detecting carbon dioxide in the air.

  Further, the other means has an operation time storage means for storing an operation time within a predetermined period of the heating means, and when the operation time stored in the operation time storage means exceeds a predetermined time, the heating means Is controlled so as not to operate.

  The other means controls the heating means to operate until a predetermined time when the operation time stored in the operation time storage means is insufficient for the predetermined time.

  The other means is characterized by having an operation time display means for displaying a difference between the operation time stored in the operation time storage means and a predetermined time.

  Another means is that the sensor for detecting the degree of air contamination is a gas sensor.

  The other means is a dust sensor and a gas sensor in which the sensor for detecting the degree of air contamination measures the dust concentration in the air, and controls the heating means in accordance with the output of the gas sensor.

  In addition, the other means has a heating operation means for forcibly operating the heating means.

  In addition, the other means is characterized by having a heating display means for displaying that the heating means is operating.

  Further, the other means has a cumulative operation time storage means for storing the cumulative operation time of the heating means, and when the cumulative operation time stored in the cumulative operation time storage means exceeds a predetermined time, it is externally provided. It has the display means to display, It is characterized by the above-mentioned.

  In addition, the other means has a temperature measuring means for measuring the temperature of the heating means, and when the temperature of the heating means measured by the temperature measuring means falls below a predetermined value, a temperature drop display for displaying it outside It has the means.

  According to the present invention, the deodorizing means composed of the gas adsorbent, the deodorizing means composed of the oxidation catalyst and the heating means are combined, and the operation of the heating means is controlled according to the sensor signal, so that the deodorizing performance is excellent and stable over a long period of time. The deodorizing performance and energy-saving air purifier can be provided.

  Moreover, the air cleaner which can suppress deterioration of an oxidation catalyst by heating an oxidation catalyst efficiently can be provided.

  The invention according to claim 1 of the present invention comprises a sensor for detecting the degree of air contamination, a deodorizing means A comprising a gas adsorbent, a deodorizing means B comprising an oxidation catalyst and a heating means for heating the oxidation catalyst, And a control means for controlling the heating means according to the degree of air contamination detected by the sensor, wherein the deodorizing means A and the deodorizing means B are used as an air purifier for purifying the air. The means is a combination of a gas adsorbent and an oxidation catalyst, and the operation of the heating means is controlled according to the output of the sensor, thereby improving the deodorizing performance and shortening the operation time of the heating means. That is, by the combination of the deodorizing means A and the deodorizing means B, the air is adsorbed and deodorized by the adsorbent of the deodorizing means A to purify the air, and the deodorized means removes the dirt of the air adsorbed and deodorized by the gas adsorbent to reduce the concentration. It is more strongly decomposed and purified by oxidative decomposition of B with a photocatalyst. It is more efficient due to the synergistic effect of the deodorizing means A and the deodorizing means B, such as being able to decompose and deodorize difficultly adsorbed odor components or odor components that flow out after reaching the adsorption equilibrium by the oxidation catalyst of the deodorizing means B. Deodorization and further higher deodorization are possible.

  The invention according to claim 2 of the present invention includes a sensor for detecting the degree of air contamination, a deodorizing means C having a gas adsorbent, an oxidation catalyst, and a heating means for heating the oxidation catalyst, and air detected by the sensor. Control means for controlling the heating means in accordance with the degree of contamination of the air, and an air purifier for purifying the air by the deodorizing means C. One deodorizing means is a combination of a gas adsorbent and an oxidation catalyst. As a result of the synergistic effect of the adsorbent and the oxidation catalyst, more efficient deodorization and higher deodorization are possible.

  According to a third aspect of the present invention, the heating means is operated from the time when the degree of dirt detected by the sensor becomes lower than the predetermined degree of dirt, and the heating means is controlled to stop when the air becomes clean. In the initial stage of odor generation, deodorization with a gas adsorbent is performed, and when the odor is reduced, the heating means is operated to perform deodorization with an oxidation catalyst. Has the effect of improving.

  The invention according to claim 4 of the present invention operates the heating means from the time when the degree of dirt detected by the sensor becomes lower than the predetermined degree of dirt, and after a certain time has passed since the air became clean, It is controlled to stop, and further has a function of performing sufficient deodorization and suppressing deterioration of the oxidation catalyst.

  The invention according to claim 5 of the present invention has change amount detecting means for detecting the change amount of the degree of contamination detected by the sensor, and when the change amount detected by the change amount detecting means becomes lower than a predetermined change amount. The heating means is operated from the above, and the heating means is controlled to stop when the air becomes clean. By detecting air dirt relatively, the deodorizing effect is improved and the operating time of the heating means Has the effect of shortening.

  According to the sixth aspect of the present invention, the sensor has a sensor for detecting the degree of air contamination and a sensor for detecting a person, and the heating means is operated when the sensor for detecting the person detects the person. Since the heating means is operated by detecting the presence of a person, the operation time of the heating means is limited and sufficient deodorizing performance can be obtained when there is a person.

  The invention described in claim 7 is characterized in that the sensor for detecting a person is a pyroelectric sensor, and detects the person by detecting the body temperature of the human body with infrared rays. It has the effect | action which detects.

  The invention according to claim 8 of the present invention is characterized in that the sensor for detecting a person is a sensor for detecting carbon dioxide in the air, and is capable of detecting a person by carbon dioxide generated by human breathing. Have

  Invention of Claim 9 of this invention has the operation time memory | storage means which memorize | stores the operation time within the fixed period of a heating means, and when the said operation time memorize | stored in the said operation time memory | storage means exceeds predetermined time, The heating means is controlled so as not to operate, and has an effect of limiting the operation time of the heating means.

  The invention according to claim 10 of the present invention controls the heating means to operate until a predetermined time when the operation time stored in the operation time storage means is insufficient for a predetermined time. Heats for a period of time and acts to suppress deterioration of the oxidation catalyst.

  The invention according to claim 11 of the present invention is characterized by comprising operating time display means for displaying the difference between the operating time stored in the operating time storage means and a predetermined time, and the operating time of the heating means. Has the effect of informing the user.

  The invention according to claim 12 of the present invention is characterized in that the sensor for detecting the degree of air contamination is a gas sensor, and the deodorizing effect is improved by measuring the amount of pollutant gas in the air. It has the action which can do.

  In the invention according to claim 13 of the present invention, the sensor for detecting the degree of air contamination is a dust sensor and a gas sensor for measuring the dust concentration in the air, and the heating means is controlled according to the output of the gas sensor. When the gas that can be decomposed by the catalyst is generated, the heating means is operated to deodorize with the oxidation catalyst, and the operation time of the heating means can be further shortened.

  The invention according to claim 14 is characterized by having a heating operation means for forcibly operating the heating means, and a user is required even when the operation of the heating means is restricted. The heating means can be operated at any time.

  The invention according to claim 15 of the present invention is characterized by having heating display means for displaying that the heating means is operating, so that the user can know whether or not the heating means is operating. Has the effect of being able to.

  The invention according to claim 16 of the present invention has cumulative operation time storage means for storing the cumulative operation time of the heating means, and when the cumulative operation time stored in the cumulative operation time storage means exceeds a predetermined time, Is displayed on the outside, and the user can easily know the replacement time of the heating means.

  The invention according to claim 17 has temperature measuring means for measuring the temperature of the heating means, and when the temperature of the heating means measured by the temperature measuring means falls below a predetermined value, it displays it externally. It has a temperature drop display means, and has an effect that the user can easily know the replacement time of the heating means.

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

(Embodiment 1)
FIG. 1 is a schematic diagram showing the configuration of the air cleaner of the present invention. FIG. 2 is a block diagram showing the operation of the air cleaner of the present invention. FIG. 3 is an operation explanatory diagram according to the degree of contamination of the air cleaner of the present invention.

  As shown in FIG. 1, the air purifier main body 10 sucks air from the intake port 8 by the blower 7 and discharges air from the exhaust port 9.

  Inside the air cleaner body 10, in order from the air inlet 8 side, a dust collecting filter 6 that removes dirt such as dust, and an adsorption that adsorbs gas in the air as a deodorizing means A5 having a gas adsorbent. As the deodorizing filter 4 and deodorizing means B3, a set of oxidation catalyst filter 1 made of an oxidation catalyst and a heating means 2 for heating the oxidation catalyst filter 1 are arranged.

  Air sucked from the intake port 8 removes particulate components such as dust by the dust collection filter 6, and then removes odors and harmful gas components by the adsorption deodorization filter 4. Further, odors and harmful gas components that could not be removed by the adsorption deodorizing filter 4 are removed by the oxidation catalyst filter 1 when the heating means 2 is operating.

  Here, the dust collection filter 6 may be any filter that can remove particles such as dust in the air, and uses a known method such as a non-woven fabric made of glass fiber or the like, or a filter that removes dust by static electricity. be able to.

  The adsorption deodorizing filter 4 may be a known filter as long as it is made of a material that adsorbs odorous components and harmful gas components in the air, such as activated carbon, zeolite, alumina, and silica gel.

  The oxidation catalyst filter 1 may be any filter made of an oxidation catalyst material having an oxidation activity when heated, such as metals such as platinum, palladium, silver, copper, manganese, cobalt, and iron, and metal oxides. An oxidation catalyst can be used. The oxidation catalyst may be supported on zeolite, alumina or the like. Here, the heating means 2 is sandwiched, but if the oxidation catalyst filter 1 is heated by the heat of the heating means 2, the number and the arrangement are not particular.

  Any heating means 2 may be used as long as it can be heated to a temperature at which the oxidation catalyst filter 1 is activated. For example, a nichrome wire, a PTC heater, a halogen lamp, an infrared heater, or the like can be used.

  Moreover, the temperature which activates the oxidation catalyst filter 1 can set optimal temperature with the kind of catalyst, and target gas.

  Next, the operation will be described.

  As shown in the block diagram of FIG. 2, the gas sensor 11 outputs the degree of air contamination to the operation control means 12 and the control means 14. The operation control means 12 controls the operation of the blower 13 according to the degree of dirt as an output of the gas sensor 11, for example, a strong operation when the degree of dirt is high, a weak operation when it is low, and a stop when the air is clean.

  The control unit 14 controls the operation and stop of the heating unit 15 in accordance with the degree of contamination that is the output of the gas sensor 11. The deodorizing means B17 includes a heating means 15 and an oxidation catalyst 16, and the oxidation catalyst 16 is heated by the operation of the heating means 15.

  The operation of the above configuration will be described with reference to FIG. FIG. 3 shows the elapsed time on the horizontal axis and the degree of air contamination that is the output of the gas sensor 11 on the vertical axis.

  When an odor occurs at time A, the degree of air contamination, which is the output of the gas sensor 11, increases. The operation control means 12 determines that the air has become dirty when the degree of contamination exceeds the level value 1, and operates the blower 13. As a result, the air purifier purifies gas components such as dust and odor in the air by the functions of the dust collection filter 6 and the adsorption deodorization filter 4.

  After the operation of the blower 13, the degree of air contamination decreases due to the effect of the adsorption deodorizing filter 4. However, adsorbents such as activated carbon and zeolite used for the adsorption deodorizing filter 4 generally have a low deodorizing speed at low concentrations and reach equilibrium at a certain concentration. Therefore, in order to improve the deodorization performance at a low concentration where the degree of contamination is low, when the degree of contamination decreases to the level value 2, the control means 14 controls the heating means 15 to operate at time C and the oxidation catalyst filter 1 performs oxidation. Start removal by decomposition.

  Next, when the contamination level further decreases due to the effect of the oxidation catalyst, at time D, the control unit 14 determines that the output of the gas sensor 11 has reached the contamination level value 3, and stops the heating unit 15. Furthermore, the operation control means 12 stops the blower 13.

  With this operation, in the conventional air cleaner, the heating means 15 operates only from time C to time D, and the operation time can be greatly shortened.

  Furthermore, since the adsorption deodorizing filter 4 and the oxidation catalyst filter 1 are used in combination, even if the operating time of the heating means 15 is shortened, good deodorizing performance can be obtained.

(Embodiment 2)
FIG. 4 is a schematic diagram showing the configuration of the air cleaner of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the deodorizing means C19 is constituted by a deodorizing filter 18 and a heating means 2, and the deodorizing filter 18 is constituted by combining an oxidation catalyst and an adsorbent.

  Here, the deodorizing filter 18 can be configured by mixing the adsorbent and the oxidation catalyst or combining them in layers.

  In the above configuration, since the deodorizing means C19 is composed of an adsorbent and an oxidation catalyst, it is possible to obtain an adsorption deodorization effect by the adsorbent and a decomposition deodorization effect by the oxidation catalyst with one device.

(Embodiment 3)
FIG. 5 is a block diagram showing the operation of the air cleaner of the present invention. FIG. 6 is an operation explanatory diagram according to the degree of contamination of the air cleaner of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 4, the timer 20 outputs the time being measured to the control means 14.

  The operation in the above configuration will be described with reference to FIG.

  In FIG. 5, when an odor occurs at time A, the degree of contamination that is the output of the gas sensor 11 increases, and at time B, the degree of contamination reaches the level value 1. The operation control means 12 determines that the degree of contamination has reached the level value 1 and operates the blower 13.

  Thereafter, the odor is removed, the degree of contamination as an output of the gas sensor 11 is lowered, the control means 14 determines that the level value 2 is reached at time C, the heating means 15 is operated, and the oxidation catalyst 16 is heated. .

  Due to the deodorizing effect of the oxidation catalyst, when the degree of contamination further decreases and reaches level 3, the control means 14 outputs a signal to the timer 20, and the timer 20 receives the signal and starts timing.

  The timer 20 outputs a signal to the control means 14 when a predetermined time t has elapsed from the start of time measurement (time E). The control means 14 receives the signal from the timer 20 and stops the heating means 15. At the same time, the operation control means 12 stops the operation of the blower 13.

  Here, the predetermined time t is desirably a time within one hour and can be set in advance.

  Moreover, you may set according to the driving | running state of an air cleaner, such as the length of the time D from the time B. FIG.

  It can also be determined according to the dirt level output of the gas sensor 11.

  As described above, by controlling the heating means 15 to continue even after the air is clean, the oxidation catalyst can be regenerated, sufficient deodorization can be performed, and energy saving and longer life of the heating means can be achieved. Is possible.

(Embodiment 4)
FIG. 7 is a block diagram showing the operation of the air cleaner of the present invention. FIG. 8 is an operation explanatory diagram according to the degree of contamination and the amount of change of the air cleaner of the present invention. The same parts as those in the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 7, the change amount calculation means 21 inputs the degree of contamination that is the output of the gas sensor 11, calculates the change amount, and outputs it to the control means 14. The control means 14 controls the operation of the heating means 15 on the basis of the degree of contamination that is the output of the gas sensor 11 and the change amount that is the output of the change amount calculation means 21. The change amount calculating means 21 includes a microcomputer programmed with the above contents.

  The operation of the above configuration will be described with reference to FIG.

  In FIG. 7, graph A shows the horizontal axis time and the vertical axis contamination degree. In the graph B, the horizontal axis indicates time, and the vertical axis indicates the amount of change in the degree of contamination.

  Here, the amount of change is input to the change amount calculation means 21 as the degree of contamination, which is the output of the gas sensor 11, and the amount of change in the degree of contamination in a preset unit time is calculated. Although the known method can be used for the calculation of the amount of change, it is desirable to use a moving average or the like in order to remove the cause of fine fluctuations in the degree of contamination. The unit time for determining the amount of change may be determined in consideration of the operating time of the air cleaner, the rate of change in the degree of air contamination, and is generally preferably about 1 to 10 minutes.

  The operation control means 12 operates the blower 13 by judging that the odor is generated at the time A and the degree of dirt has reached the level value 1 at the time B. Next, the control unit 14 monitors the degree of contamination and the amount of change, and when the degree of contamination decreases to a level value of 2 or less at time C and the amount of change exceeds the amount of change 1 that is a determination value, the control unit 14 controls the heating unit 15. Operate.

  Here, the change amount 1 that is the determination value of the change amount may be set to a value that determines that the dirt degree is less inclined and the dirt of the air has become difficult to remove even if the air cleaner is operated. desirable.

  As described above, the oxidative decomposition by the oxidation catalyst 16 is started by operating the heating means 15 and heating the oxidation catalyst 16 when the amount of change in the degree of contamination becomes small and the inclination becomes gentle. It is possible to remove dirt of low-concentration air that is difficult to remove by means, and at the same time, it is possible to extend the life of the heating means and save energy.

(Embodiment 5)
FIG. 9 is a block diagram showing the operation of the air cleaner of the present invention. The same parts as those in the first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 9, the human detection sensor 22 outputs a signal to the control means 14 when detecting the presence of a person. The control unit 14 controls the operation and stop of the heating unit 15 based on the degree of contamination that is the output of the gas sensor 11, the change amount that is the output of the change amount calculation unit 21, and the output of the human detection sensor 22.

  In the above configuration, the operation is performed when the human detection sensor 22 does not detect a person and the control means 14 does not operate the heating means 15. When the human detection sensor 22 detects a person, the output of the gas sensor 11. The operation and stop of the heating means 15 are controlled on the basis of the degree of contamination and the change amount output from the change amount calculating means 21.

  Here, although the known means can be used as the human detection sensor 22, it is possible to easily detect a person by using a pyroelectric sensor that detects infrared rays generated by the human body.

  In addition, as a human detection sensor, a carbon dioxide sensor that detects carbon dioxide generated by human breathing can also be used. By detecting a person with carbon dioxide, it becomes possible to know the increase or decrease of the number of persons, and it is also possible to control the operation state of the air cleaner according to the number of persons.

  As described above, by detecting the presence or absence of a person by the human detection sensor 22, the heating means 15 can be stopped when there is no person, and the life of the heating means 15 can be extended and energy saving can be achieved. In the case where there is, the heating means 15 is operated so that sufficient deodorizing performance can be obtained.

(Embodiment 6)
FIG. 10 is a block diagram showing the operation of the air cleaner of the present invention. The same parts as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 10, the operating time accumulating means 23 receives the control signal of the heating means 15 output from the control means 14 and the control signal of the blower 13 which is the output of the operation control means 12, and the operating time of the heating means 15 and the operation of the blower 13. Accumulate time.

  The operation time display means 24 receives the operation time integration means 23 signal and displays the result calculated by the control means 14 to the outside.

  The operating time integrating means 23 includes a microcomputer programmed with the above contents.

  As the operation time display means 24, known display means such as LED and liquid crystal can be used.

  The control means 14 determines whether or not to operate the heating means 15 from the operating time of the heating means 15 accumulated by the operating time integrating means 23, the operation time of the blower 13, and the degree of contamination that is the output of the gas sensor 11.

  In the above configuration, the control unit 14 compares the operation time of the blower 13 that is the output of the operation time integrating unit 23 and the operation time of the heating unit 15, and compares the operation time and the ratio of the operation time set in advance, If the ratio of the operation time is large, the heating means 15 is not operated until the preset ratio is reached. If the operation time ratio is small, the heating means 15 is controlled to operate until a preset ratio is reached. At the same time, the control means 14 outputs the operation time ratio to the operation time display means 24.

  Here, the ratio between the operation time and the operation time can be a ratio of time or a ratio within a certain period such as one day or one week.

  Moreover, the preset ratio can be set from the life of the heating means and the product life of the air cleaner. For example, if the product life is 7 years, that is, if it is operated for 8 hours a day, the life of the heating means is about 8000 hours.

  As described above, by controlling the operation of the heating unit 15 from the integrated value of the operating time of the blower 13 and the integrated operating time of the heating unit 15, the life of the heating unit 15 can be extended and the oxidation catalyst 16 can be extended. Therefore, it is possible to maintain a good deodorizing performance over a long period of time.

  Further, the operating time display means 24 can know the operable time of the heating means 15.

(Embodiment 7)
FIG. 11 is a block diagram showing the operation of the air cleaner of the present invention. The same parts as those in the first to sixth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 12, the dust sensor 25 measures the dust concentration in the air and outputs it to the operation control means 12. The operation control means 12 inputs the output of the gas sensor 11 and the output of the dust sensor 25 and controls the operation of the blower 13.

  In the above configuration, the operation control means 12 monitors the degree of dirt that is the output of the gas sensor 11 and the dust concentration that is the output of the dust sensor 25 to determine that the degree of dirt and the concentration of air has increased and the air has become dirty. Judgment is made and the blower 13 is operated.

  As described above, since the operation of the blower 13 can be controlled by the dust concentration, it is possible to deal with air dirt caused by dust that does not need to be decomposed by the oxidation catalyst 16, and in the case of dirt caused by dust, the heating means 15 is used. Since it does not operate, it is possible to extend the life of the heating means 15 and to improve the purification performance of air dirt.

(Embodiment 8)
FIG. 12 is a block diagram showing the operation of the air cleaner of the present invention. The same parts as those in the first to seventh embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 12, the heating operation means 26 outputs a signal for performing the forced operation of the heating means 15 to the control means 14. The control means 14 receives the signal from the heating operation means 26 and operates the heating means 15.

  The cumulative operation time integration unit 28 calculates the cumulative operation time of the heating unit 15 calculated by the operation time integration unit 23. The control means 14 receives the signal from the cumulative operation time integrating means 28 and outputs a signal to the display means 27 when a preset time is exceeded. The time set in advance in the previous period is set to the time for which the life of the heating means 15 is reached.

  The display unit 27 receives a signal from the control unit 14 and displays the operating state of the heating unit 15 and that the accumulated operation time of the heating unit 15 has exceeded a preset time.

  Here, means such as a switch can be used as the heating operation means 26. As the display means 27, known means such as an LED or a liquid crystal can be used.

  As described above, by forcibly operating the heating means 15 with the heating operation means 26, the heating means can be operated when the user needs it.

  Further, the cumulative operating time of the heating means 15 is calculated by the cumulative operating time integrating means 28, and when the preset time is exceeded, it is displayed on the display means 27, whereby the replacement time of the heating means 15 can be known.

(Embodiment 9)
FIG. 13 is a block diagram showing the operation of the air cleaner of the present invention. The same parts as those in the first to eighth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

  In FIG. 13, the temperature measuring means 29 measures the temperature of the heating means 15. The temperature measured by the temperature measuring unit 29 is output to the control unit 14. The control means 14 compares the input temperature with a preset temperature, and outputs it to the temperature drop display means 30 when it falls below the preset temperature. The temperature decrease display means 30 receives the signal from the control means 14 and displays it.

  Here, if the temperature measuring means 29 is a means for measuring the temperature of the heating means 15, the known means can be used. Further, it may be installed anywhere as long as the temperature of the heating means 15 can be measured.

  The temperature decrease display means 30 may be a known display means such as an LED or a liquid crystal.

  As described above, the degree of deterioration of the heating means 15 can be known by measuring the temperature of the heating means 15 by the temperature measuring means 29.

  Furthermore, by displaying that the temperature has decreased, it is possible to know the appropriate replacement time of the heating means 15.

  It can also be applied to applications such as removal of odors in the air, such as air cleaners for business use in homes, stores and hospitals, deodorizers, and VOCs.

The block diagram which shows the structure of Embodiment 1 of this invention. The block diagram which shows operation | movement of Embodiment 1 of this invention. Operation explanatory diagram of Embodiment 1 of the present invention The block diagram which shows the structure of Embodiment 2 of this invention. The block diagram which shows operation | movement of Embodiment 3 of this invention. Operation explanatory diagram of Embodiment 3 of the present invention The block diagram which shows operation | movement of Embodiment 4 of this invention. Operation explanatory diagram of Embodiment 4 of the present invention ((A) a diagram showing the degree of contamination, (B) a diagram showing the amount of change) The block diagram which shows operation | movement of Embodiment 5 of this invention. The block diagram which shows operation | movement of Embodiment 6 of this invention. The block diagram which shows operation | movement of Embodiment 7 of this invention. The block diagram which shows the operation | movement of Embodiment 8 of this invention. The block diagram which shows operation | movement of Embodiment 9 of this invention. Block diagram showing the configuration of a conventional air purifier Block diagram showing the operation of a conventional air cleaner

1 oxidation catalyst filter 2 heating means 3 deodorizing means B
4 Adsorption deodorization filter 5 Deodorization means A
DESCRIPTION OF SYMBOLS 11 Gas sensor 12 Operation control means 14 Control means 15 Heating means 16 Oxidation catalyst 17 Deodorizing means B
18 Deodorizing filter 19 Deodorizing means C
20 timer 21 change amount calculation means 22 human detection sensor 23 operation time integration means 24 operation time display means 25 dust sensor 26 heating operation means 27 display means 28 cumulative operation time integration means 29 temperature measurement means 30 temperature decrease display means

Claims (17)

A sensor for detecting the degree of air contamination, a deodorizing means A having a gas adsorbent, a deodorizing means B having an oxidation catalyst and a heating means for heating the oxidation catalyst, and a degree of air contamination detected by the sensor And an air purifier for purifying the air by the deodorizing means A and the deodorizing means B. A sensor for detecting the degree of air contamination, a deodorizing means C having a gas adsorbent, an oxidation catalyst, and a heating means for heating the oxidation catalyst; and the heating means according to the degree of air contamination detected by the sensor. And an air purifier for purifying air by the deodorizing means C. The air cleaner according to claim 1 or 2, wherein the heating means is operated from a point in time when the degree of dirt detected by the sensor is lower than a predetermined degree of dirt, and the heating means is controlled to stop when the air becomes clean. . The heating means is operated from the time when the degree of dirt detected by the sensor is lower than a predetermined degree of dirt, and the heating means is controlled to stop after a predetermined time has passed since the air became clean. The air cleaner described. It has a change amount detecting means for detecting the change amount of the degree of dirt detected by the sensor, and the heating means is operated from the time when the change amount detected by the change amount detecting means becomes lower than a predetermined change amount so that the air is clean. The air purifier according to claim 1 or 2, wherein the heating means is controlled to stop at a point of time. The sensor has a sensor for detecting the degree of air contamination and a sensor for detecting a person, and controls the heating means to operate when the sensor for detecting the person is detecting a person. Air purifier. The air cleaner according to claim 6, wherein the sensor for detecting a person is a pyroelectric sensor. The air cleaner according to claim 6, wherein the sensor for detecting a person is a sensor for detecting carbon dioxide in the air. An operation time storage means for storing an operation time within a predetermined period of the heating means is provided, and the heating means is controlled not to operate when the operation time stored in the operation time storage means exceeds a predetermined time. The air cleaner according to any one of claims 1 to 8. The air cleaner according to claim 9, wherein when the operation time stored in the operation time storage means is not enough for the predetermined time, the heating means is controlled to operate until the predetermined time. 11. The air cleaner according to claim 9, further comprising an operation time display means for displaying a difference between the operation time stored in the operation time storage means and a predetermined time. The air cleaner according to any one of claims 1 to 11, wherein the sensor for detecting the degree of air contamination is a gas sensor. The air cleaner according to any one of claims 1 to 12, wherein the sensor for detecting the degree of air contamination is a dust sensor and a gas sensor for measuring a dust concentration in the air, and the heating means is controlled according to the output of the gas sensor. The air cleaner according to any one of claims 1 to 12, further comprising heating operation means for forcibly operating the heating means. The air cleaner according to any one of claims 1 to 14, further comprising heating display means for displaying that the heating means is operating. A cumulative operation time storage means for storing the cumulative operation time of the heating means; and a display means for displaying the cumulative operation time stored in the cumulative operation time storage means when the cumulative operation time exceeds a predetermined time. The air cleaner according to any one of claims 1 to 15, wherein It has a temperature measurement means for measuring the temperature of the heating means, and when the temperature of the heating means measured by the temperature measurement means falls below a predetermined value, it has a temperature drop display means for displaying it outside. The air cleaner according to any one of claims 1 to 16.

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