JP2009056446A - Filter history management apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance comfortability by presuming the timing of filter exchange in an electronic equipment having air-blowing function. <P>SOLUTION: The filter management apparatus has a deterioration information receiving means for receiving input of information indicating deterioration degree of filters 4, 5 for cleaning air and information for determining deterioration degree; a history information memorizing apparatus 14 for memorizing information received by the deterioration information receiving means or a calculation result determined from the information while making it relevant to the information regarding the timing when the information is obtained; and a display device 12 for displaying the memorized content of the history information memorization means. According to such a constitution, the timing of filter exchange can be presumed and maintenance of filter performance is facilitated. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device having a filter and a filter history management apparatus used in the electronic device.

  In an electronic device having a conventional filter, for example, an air conditioner, when it is necessary to replace the filter, a message indicating that the replacement is necessary is displayed to prompt the user to replace the filter (for example, Patent Document 1 No. 1). 2 and 3 (see alarm lamp 17 etc.)).

Some air purifiers and fans that use heat radiation also indicate when the filter replacement time is reached.
Japanese Utility Model Publication No. 2-48120 (full text)

  However, in such a device, since it is displayed after the filter needs to be replaced, it is necessary to stop the air conditioner and replace the filter.

  Furthermore, since the deterioration of the filter proceeds especially when the air volume of the air conditioner is large, there is a tendency that the probability that the filter needs to be replaced increases as the necessity of the operation of the air conditioner is particularly necessary. It was not easy to maintain.

  Similarly, for a heat dissipating fan with an air purifier and a filter, it will be displayed after the filter needs to be replaced. Therefore, stop the air purifier etc. and replace the filter. There is a problem that it is not easy to maintain the filter performance.

  Accordingly, an object of the present invention is to facilitate the maintenance of the filter performance of an electronic device having a filter.

And in order to achieve this object, the filter history management device of the present invention,
Deterioration information receiving means for receiving information indicating the degree of deterioration of a filter for purifying air or information for obtaining the degree of deterioration;
History information storage means for storing the information received by the deterioration information receiving means or the calculation result obtained from this information in association with information about the time when this information was acquired;
Display means for displaying the stored contents of the history information storage means;
It is characterized by having.

  According to such a configuration, the filter replacement time can be predicted, and the filter can be replaced at a time when there is little adverse effect due to the replacement work before and after the filter replacement time. Becomes easy.

  The filter history management apparatus of the present invention includes a deterioration information receiving unit that receives information indicating the degree of deterioration of a filter for purifying air or information for obtaining the degree of deterioration, information received by the deterioration information receiving unit, It is characterized by having a history information storage means for storing the calculation result obtained from the information in association with information relating to the time when this information was acquired, and a display means for displaying the storage contents of the history information storage means.

  By doing so, it is possible to predict the replacement time of the filter and replace the filter by selecting the time when there is little adverse effect due to the replacement work before and after the replacement time of the filter, so it is easy to maintain the filter performance It becomes.

  The filter history management device of the present invention may be further characterized in that the filter is a filter of an air conditioner.

  By doing so, in an air conditioner in which the degree of deterioration of the filter varies depending on the season, it is easy to predict the replacement time of the filter and maintain the filter performance.

  In the filter history management device of the present invention, the filter may be a filter of an air purifier.

  By doing so, in the air cleaner, it is easy to predict the replacement time of the filter and maintain the filter performance.

  The filter history management device of the present invention may be further characterized in that the filter is an exhaust fan filter.

  By doing so, in the exhaust fan for cooling electronic equipment such as a television, a personal computer, and a copy machine, it is possible to predict the replacement time of the filter and to easily maintain the filter performance.

  Further, the filter history management apparatus of the present invention may be characterized in that the display means displays a value indicating a degree of deterioration of the filter in association with information on a time when the value is acquired.

  By doing so, it becomes possible to easily know the past history of deterioration of the filter.

  In the filter history management device of the present invention, the display means can simultaneously display a value indicating the degree of deterioration of the filter and information indicating when an event that may affect the deterioration of the filter has occurred. It is good also as a feature.

  By doing so, it is possible to grasp the correlation between the occurrence of an event that may affect the deterioration of the filter and the deterioration of the filter.

  The filter history management device of the present invention is further characterized in that the display means can simultaneously display a value indicating the degree of deterioration of the filter and a numerical value indicating an amount that may affect the deterioration of the filter. Also good.

  By doing so, it is possible to grasp the correlation between a value indicating the degree of deterioration of the filter and a numerical value that may affect the deterioration of the filter.

  In the filter history management device of the present invention, the display means can simultaneously display the same kind of information one week ago together with the time change of the value indicating the degree of deterioration of the filter or the speed of deterioration of the filter. May be a feature.

  By doing in this way, it becomes possible to compare with the degree of deterioration one week ago.

  In the filter history management device of the present invention, the display means can simultaneously display the same type of information of one year ago together with the time change of the value indicating the degree of deterioration of the filter or the speed of deterioration of the filter. May be a feature.

  By doing in this way, it becomes possible to compare with the degree of deterioration one year ago.

  In addition, the filter history management device of the present invention may be further characterized in that the degree of deterioration of a plurality of filters installed in series in the same ventilation path is displayed on the same screen.

  By doing in this way, it becomes possible to compare the lifetimes of a plurality of filters installed in series in the same ventilation path.

  The filter history management apparatus of the present invention further includes a horizontal axis representing the degree of deterioration of one of the two filters installed in series in the same ventilation path, and a vertical axis representing the degree of deterioration of the other filter. Thus, a graph may be displayed.

  By doing in this way, it becomes possible to compare the lifetimes of a plurality of filters installed in series in the same ventilation path.

  The filter history management device of the present invention includes a deterioration information receiving unit that receives information indicating a degree of deterioration of a filter for purifying water or information for obtaining the degree of deterioration, information received by the deterioration information receiving unit, A history information storage unit that stores a calculation result obtained from the information in association with information related to the time when the information was acquired, and a display unit that displays the storage contents of the history information storage unit may be provided.

  By doing so, it is easy to predict the replacement time of the filter and maintain the filter performance.

  The filter history management device of the present invention may be further characterized by being a filter of a water treatment device.

By doing in this way, in a water treatment apparatus, the replacement time of a filter is estimated and it becomes easy to maintain filter performance.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is an explanatory diagram of the first embodiment.

  There is a heat exchanger 2 in the main body case 1, and air can be sent to the heat exchanger 2 by operating the fan 3.

  A filter 4 is provided on the upstream side of the fan 3, and a filter 5 is provided on the downstream side of the fan 3.

  Furthermore, it has a differential pressure gauge 6 that functions as a differential pressure measuring means that measures the differential pressure between the inlet and outlet of the filter 4, and a differential pressure gauge 7 that functions as a differential pressure measuring means that measures the differential pressure between the inlet and outlet of the filter 5. .

  AC power is supplied to the fan 3 from the power supply 8, and the frequency of the power and the rotational speed of the fan 3 are controlled to be proportional.

  The transmitter 9 collects the measurement results of the differential pressure gauges 6 and 7 and the information on the frequency of the power supplied from the power supply 8, and these pieces of information are placed from the transmitter 9 in the room where the filters 4 and 5 are managed. It is transmitted to the receiving device 10.

  The calculation unit 11 calculates the degree of deterioration of the filters 4 and 5 based on the information received by the receiving device 10 and displays the result on the display device 12.

  The frequency of the power supply 8 is proportional to the rotational speed of the fan 3, and the amount of air sent to the heat exchanger 2 is determined from the rotational speed of the fan 3.

  Therefore, the calculation unit 11 uses the information on the frequency of the power supply 8 as the information on the amount of air passing through the filter 4 and the filter 5.

  The degree of deterioration of the filter 4 is calculated as follows.

  FIG. 2 is a graph showing the relationship between the air volume of the filter 4 and the pressure loss.

  The air volume and the pressure difference (pressure loss) between the inlet and outlet of the filter 4 immediately after the filter 4 is replaced or cleaned or immediately after the air conditioner is installed (hereinafter this state is referred to as “the initial state of the filter 4”). It is like a curve L2.

  On the other hand, when the filter 4 is clogged and it is time for replacement (that is, replacement or cleaning is required), the relationship between the air volume and the differential pressure (pressure loss) is as shown by a curve L1.

  If the measured value of the amount of air passing through the filter 4 and the differential pressure before and after the filter 4 is a value indicated by the point A1, the point is the point A1 on the curve L1, so the filter 4 is at the replacement time.

  If the initial state of the filters 4 and 5 is expressed as “100%” and the replacement time is expressed as “0%”, the performance of the filter 4 (the degree of deterioration of the filter) is expressed as “0%”.

  Similarly, when the measured value of the air volume passing through the filter 4 and the differential pressure before and after the filter 4 is the point B1, the point is the point B1 on the curve L1. Expressed as “0%”.

  When the measured value is on the curve L2 as in B3, the filter 4 is in the initial state, so the performance of the filter 4 is expressed as “100%”.

  Further, when the measured value is not on either of the curve L1 and the curve L2 as in B2, the performance of the filter 4 (the degree of deterioration of the filter 4) is obtained as follows.

That is, the measurement result of the air volume passing through the filter 4 (frequency of the power supply 8) B is used to refer to the stored content of the filter characteristic storage device 13 and the differential pressure b1 at the replacement time of the filter 4 and the initial value of the filter 4 The differential pressure b3 of the state is obtained and the measured differential pressure b2 is used.
100% x (b1-b2) / (b1-b3)
And this value is used as the performance of the filter 4 (the degree of deterioration of the filter 4).

  This value is 100% when the filter 4 is in the initial state, approaches 0% as the differential pressure increases due to the deterioration of the filter 4, and reaches 0% when the differential pressure is set as the replacement time of the filter 4. Become.

  The performance of the filter 5 (the degree of deterioration of the filter 5) is obtained in the same manner.

  The calculation unit 11 stores the performance of the filters 4 and 5 thus obtained in association with the date and time when the differential pressure and the air volume of the filters 4 and 5 are measured in the history information storage device 14.

  In the above description, both the performance of the filters 4 and 5 and the differential pressure and the air volume of the filters 4 and 5 are stored, but (1) only the performance of the filters 4 and 5 may be stored. ) Only the differential pressure and the air volume of the filters 4 and 5 may be stored.

  (1) If there is no possibility of using the differential pressure and air volume information of the filters 4 and 5 later, it is sufficient to store only the performance of the filters 4 and 5.

  (2) Further, only the differential pressure and the air volume of the filters 4 and 5 are stored, and when the information on the performance of the filters 4 and 5 is necessary, the filter is obtained from the stored differential pressure and air volume information of the filters 4 and 5. It is possible to calculate a value representing a performance of 4,5.

  By doing so, the storage capacity of the history information storage device 14 can be reduced as compared with the case where both the performance of the filters 4 and 5 and the differential pressure and air volume of the filters 4 and 5 are stored.

The performance history of the filters 4 and 5 stored in the history information storage device 14 is used as follows.
FIG. 3 is a view showing the contents displayed on the display device 12 when displaying the performance data of the performance of the filter 4 and the future prediction from January of this year to the present.

  A portion 15 indicated by a solid line represents performance data of the performance of the filter 4 up to the present.

  A portion indicated by a broken line indicates a prediction of a future change in the performance of the filter 4.

  Three predictions are displayed. That is, the prediction 16 that the change in the performance of the filter 4 up to now will continue, the prediction 17 that the deterioration rate of the filter 4 will be doubled, and the deterioration rate of the filter 4 will be halved. Three predictions 18 are displayed.

  By looking at this prediction, it is possible to schedule the replacement of the filter on the holiday immediately before the date when the filter is replaced and predicted.

  In a normal case, that is, when the weather predicted in the future is the same as before and the rate of deterioration of the filter 4 is predicted not to change, the prediction 16 can be used to decide the replacement schedule of the filter 4. Good.

  On the other hand, when it is predicted that the air temperature predicted in the future will increase and the frequency of use of the air conditioner will be doubled during summer use, a prediction 17 for predicting that the rate of deterioration of the filter 4 will be doubled is used. Use it.

  Further, when the temperature predicted in the future decreases during summer use and the frequency of use of the air conditioner is predicted to be halved, the prediction 18 that predicts that the rate of deterioration of the filter 4 will be halved is used. Good.

  In this way, by displaying the contents of the history information storage means 13 on the display device 12, it is possible to predict the replacement time of the filter 4 in advance, and to select a holiday, etc. that will not hinder the electronic device having the filter from being stopped. Since the filter 4 can be selected and replaced, it is not necessary to stop the electronic device having the filter on business days, so that the filter performance can be easily maintained and the comfort is improved.

  In other words, the filters 4 and 5 can be used near the end of their life while keeping the cleanliness of the living room within an appropriate range.

  In the above description, the case of an air conditioner has been described. However, the present invention is not limited to an air conditioner. For example, in the case of an air purifier for maintaining a clean room, the change in filter performance is confirmed. Since the replacement time can be determined, it becomes easy to maintain the performance of the clean room.

  Further, when it is determined whether or not it is the replacement time based only on the period of use, since the actual deterioration degree of the filter 4 is unknown, it is necessary to determine the replacement time on the assumption that the deterioration rate of the filter 4 is fast. However, if the degree of deterioration of the filter 4 is known, the replacement time of the filter 4 can be extended and the life cycle cost can be reduced.

  Conventionally, in order to estimate the replacement time, a complicated work of inquiring the manufacturer's person in charge or analyzing the life by handwriting from the manufacturer's characteristic chart each time is necessary. 13 stores information related to the characteristics of the filters 4 and 5, the calculation unit 11 calculates the degree of deterioration of the filter, and the display unit 12 displays the degree of deterioration as a calculation result. It becomes unnecessary.

  In addition, since the calculation of the degree of deterioration of the filters 4 and 5 is automatically performed by the calculation unit 11, knowledge or experience for obtaining the degree of deterioration of the filters 4 and 5 is not required. It is possible to suppress variations in service quality due to the knowledge or experience of the person in charge of patrol.

(Verification with event information)
FIG. 4 shows a display on the display device 12 when information indicating the time when an event that may affect the speed of deterioration of the performance of the filter 4 occurs together with the history of performance deterioration of the filter 4. FIG.

  A solid line 19 represents a history of deterioration of the performance of the filter 4 from January to December of 2010.

  A vertical line 20 indicates the time of road construction performed near the inlet of the air passing through the filter 4.

  Around March, although there are many days when the air conditioner is not used, the deterioration of the filter 4 is progressing. However, it is readily apparent that road construction is underway at this time, and the cause of the deterioration of the filter 4 It is possible to recognize that there is a possibility of road construction.

  Thus, by displaying the deterioration history of the filter 4 and events that may affect the deterioration speed of the filter 4, information for estimating the cause of the deterioration of the filter 4 can be easily selected. Is possible.

  In addition, although the example of road construction was shown in FIG. 4 as an event which may influence the deterioration speed of the filter 4, when dust of the road soars when yellow sand flies, a typhoon, etc. besides this May be displayed on the display device 12 together with the deterioration history of the filter 4.

  Further, in FIG. 4, the history of deterioration of the filter 4 one year ago is also displayed by the solid line 21 at the same time.

  In this way, it can be compared with the situation one year ago.

  The difference from last year's deterioration history is the rate of deterioration around March, so it can be seen that the filter 4 has deteriorated due to reasons other than the season, and information for finding the cause of the deterioration of the filter 4 Is obtained.

  In addition, when the frequency of use of the air conditioner changes in units of one week, information is obtained to search for the cause of the deterioration of the filter 4 by superimposing the deterioration history of the filter 4 one week ago.

(Environmental changes)
FIG. 5 shows a display device 12 in the case of simultaneously displaying information indicating a time when an environmental change that may affect the speed of deterioration of the performance of the filter 4 occurs together with the history of performance deterioration of the filter 4. It is a figure showing the content displayed on.

  The solid line 22 represents the change in the filter performance over the course of one year, the vertical line 23 represents the start of the construction of the new factory, and the vertical line 24 represents the end of the construction of the new factory. Comparing this year's filter performance change 22 with last year filter performance change 25, we can see that filter 4 deteriorates quickly during the construction of the new factory, which may have increased dust due to the factory construction. I can recognize that.

  Also, in the summer after the construction of the new factory was completed, it was found that the deterioration of the filter 4 did not progress as much as last year. You can recognize that there is.

  In addition, in the winter after the construction of the new factory is completed, it can be seen that the deterioration rate of the filter 4 is faster than last year. It can be recognized that there may have been more.

(Value that affects filter degradation)
FIG. 6 is a diagram showing the contents to be displayed on the display device 12 when the deterioration history of the filter 4 and the value indicating the amount that may affect the deterioration of the filter 4 are displayed at the same time.

  A solid line 26 shows a history of the performance of the filter 4 (the degree of deterioration of the filter 4), and a solid line 27 shows a change in the amount of traffic of the vehicle around the air intake port passing through the filter 4.

  When the amount of traffic is just large, the speed of deterioration of the filter 4 is increased, so that it can be determined that the filter 4 may be deteriorated mainly due to the exhaust gas of the surrounding vehicle.

  Instead of using the value of the performance of the filter 4 (the degree of deterioration of the filter 4), the time derivative of this value may be used as a value indicating the speed of deterioration of the filter 4 for display. If the curve 27 representing the time derivative of this value and the time change of the traffic volume of the surrounding vehicles have the same shape, it is considered that there is a high possibility that the traffic volume of the surrounding vehicles has an influence on the deterioration of the filter. It becomes possible.

  If the relationship between the amount of traffic of the surrounding vehicles and the speed of deterioration of the filter 4 is known, the replacement time of the filter 4 can be predicted from the prediction of the amount of traffic of the surrounding vehicles.

  Although FIG. 6 shows an example in which the curve 27 representing the time change of the traffic amount of the surrounding vehicles is displayed on the display device, any value that affects the filter 4 may be used.

  For example, a change in a value representing temperature fluctuation may be displayed together with a change in the performance of the filter 4, and the influence of the temperature on the performance of the filter 4 can be confirmed.

  If the relationship between the temperature and the deterioration of the filter 4 is known using the past temperature and the history information of the degree of deterioration of the filter 4, it is possible to predict the replacement time of the filter 4 from the prediction of the temperature.

  In addition, as a value that affects the filter 4, the degree of air pollution, the usage time per day of an electronic device such as an air conditioner, the sunshine time per day, the number of people working in the office, and the like may be used.

(Predict filter replacement time from last year's information)
FIG. 7 is a diagram showing the contents displayed on the display device 12 when the replacement time of the filter 4 is predicted from the temporal change in the performance of the filter 4 in the past and the current performance of the filter 4.

  A solid line 28 shows the change in the performance of the filter 4 last year, a solid line 29 shows the performance of the filter 4 this year, and a vertical line 30 shows the current date and time.

  The broken line 31 represents the prediction of the filter 4 calculated that the filter 4 will deteriorate at the same rate as the same month last year.

  In this way, since the replacement time of the filter 4 can be predicted, the filter 4 can be replaced using a closed day immediately before the replacement time of the filter 4, so that comfort is improved. be able to.

(Comparison of filter life)
FIG. 8 is a diagram showing the contents displayed on the display device 12 when changes in the performance of the filter 4 and the filter 5 are simultaneously displayed.

  Since all of the air that has passed through the filter 4 passes through the filter 5, the deterioration rates of the filter 4 and the filter 5 are proportional.

  From the screen of the display device 12 shown in FIG. 8, it can be confirmed that the rate of deterioration of the filter 4 and the filter 5 is proportional, and the life of the filter 5 is about twice the life of the filter 4. I can read.

  Therefore, it is understood that the differential pressure gauge 6 for knowing the performance of the filter 5 may be abolished and the filter 5 may be replaced (or cleaned) every time the filter 4 is replaced (or cleaned) twice.

  In FIG. 9, the vertical axis represents the performance of the filter 4 and the horizontal axis represents the performance of the filter 5, and changes in the performance of the filter 4 and the filter 5 are compared.

  Since the graph is close to a straight line, it can be seen that the deterioration rates of the filter 4 and the filter 5 are proportional.

  Further, it is possible to compare the deterioration rates of the filter 4 and the filter 5 from the inclination of the graph.

  For example, as a result of replacing the filter 5 with a new filter of a different type, if the slope is the same, it can be understood that the new filter has the same life as the filter 5.

  On the other hand, it can be seen that the life of the new filter is shorter than that of the filter 5 when the inclination increases due to the replacement with a new filter.

(Filter 4 and 5 characteristics storage method)
The stored contents of the filter characteristic storage device 13 may be (1) information having a plurality of pairs of air volume and differential pressure, or (2) a calculation formula for calculating the differential pressure from the air volume.
(1) In the case of information having a plurality of pairs of air volume and differential pressure, the measured values of the air volume and differential pressure of the filters 4 and 5 at the replacement time or the filters 4 and 5 at the replacement time and the initial state may be stored as they are. Therefore, it is possible to easily create information for storage.

For example, when the filters 4 and 5 are finely adjusted on site, when the characteristics of the filter 4 or 5 are actually measured and stored as the characteristics of the filter 4 or 5 in the initial state, The actually measured value can be stored in the filter characteristic storage device 13 as it is. Thus, by storing the measured value of the characteristic in the filter characteristic storage device 13 every time the filter 4 or the filter 5 is replaced, the characteristics of the filters 4 and 5 in the initial state close to the current state are referred to. Maintenance can be performed.
(2) On the other hand, when the calculation formula for calculating the differential pressure from the air volume is stored in the filter characteristic storage device 13, the differential pressure can be easily obtained for an arbitrary air volume. In addition, the amount of information to be stored can be reduced.

(When the transmitter 9 is not used)
In the above embodiment, the measurement result of the amount proportional to the air volume and the measurement result of the differential pressure gauges 6 and 7 are transmitted to the calculation unit using the transmission device 9 and the reception device 10. The method of conveying information is not limited to this.

  For example, the frequency of the power supply 8 and the measurement results of the differential pressure gauges 6 and 7 are displayed on an analog meter or a digital meter. The numerical value may be input, and after the patrol is completed, the input numerical value may be read by the calculation unit 11 from the terminal.

  In addition, for example, the calculation unit 11, the display device 12, and the filter characteristic storage device 13 are close to the differential pressure gauges 6 and 7 and the power source 8, so that the frequency of the power source 8 and the measurement results of the differential pressure meters 6 and 7 are directly received. Also good.

  In this way, it is possible to determine whether or not the filters 4 and 5 need to be replaced at the site where the cyclic inspection is performed.

  When the transmission device 9 and the reception device 10 are used, the reception device 10 serves as a measurement result input unit that receives the input of the measurement result. Therefore, the filter management device includes the reception device 10, the calculation unit 11, and the filter characteristic storage device 13. Plays a role as a management device. On the other hand, when the transmission device 9 and the reception device 10 are not used, the calculation unit 11 serves as a measurement result input unit that directly receives the input of the measurement result, so the filter management device includes the calculation unit 11 and the filter characteristic storage device 13. It will serve as a filter management device.

  In the above-described embodiment, the differential pressure of the filters 4 and 5 and the air volume of the air passing through the filters 4 and 5 are used as a method for examining the degree of deterioration of the filters 4 and 5, but the present invention is not limited to this.

  For example, a method of measuring the color of the filter, a method of directly measuring the dust collection rate, a method of measuring the differential pressure of the filters 4 and 5 by setting the air volume to a predetermined value only at the time of measurement, and the like may be used.

(Second Embodiment)
In the first embodiment, the apparatus having the heat exchanger 2 has been described. However, an embodiment having no heat exchanger 2 will be described.

  A device (electronic device) aimed at removing harmful dusts such as allergens and molds from indoor air does not necessarily require the heat exchanger 2, but is frequently used when pollen is generated in large quantities. For this reason, the filter replacement period is shortened and changes depending on the season. Moreover, since ventilation is stopped for the replacement of the filter 4, comfort is not maintained, for example, dust is contained in the indoor air during that time.

  Therefore, by storing the performance history of the filter 4, it is possible to predict the time when the filter 4 needs to be replaced and to stop the device (electronic device) immediately before the time when the filter 4 needs to be replaced. Since the filter 4 can be replaced by selecting the time when there is little (for example, the day when it is raining and pollen does not fly), the filter performance can be easily maintained and the comfort is also improved.

(Third embodiment)
In the first embodiment and the second embodiment, the purpose is air conditioning and purification of the living space, but in the third embodiment, cooling of electronic devices such as a television, a personal computer, and a copy machine is performed. An apparatus for this will be described.

  If the temperature of a component in the electronic device exceeds a certain level, it may cause a failure or malfunction, and therefore a fan is used to release heat generated from the component to the outside.

  In this case, if dust is contained in the air sent by the fan into the electronic device, the dust will adhere to the components and wiring inside the electronic device, which may hinder cooling of the components or cause deterioration of the components. Therefore, a filter is attached to the inlet or outlet of the fan.

  In addition, if the current that flows through the component increases, the frequency of the signal that flows through the component increases, the heat released from the component increases, or the environmental temperature rises, it is necessary to increase the cooling capacity. Increase the amount of air sent into the electronic device by increasing the number of rotations of the fan.

  Therefore, the lifetime of the filter changes depending on the situation at that time.

  It is necessary to replace the filter. When replacing the filter, the use of the TV, PC, etc. must be stopped.

  However, by storing the history of the degree of deterioration of the filter, it is possible to predict the time when the filter needs to be replaced in advance, so the TV, personal computer, etc. are not used immediately before the time when the filter needs to be replaced. Occasionally, by replacing the filter, it is not necessary to stop the TV, personal computer, etc. during use, so that the filter performance can be easily maintained and the comfort is improved.

(Fourth embodiment)
In the first to third embodiments, the gas is moved through the filter. However, the liquid may be moved through the filter.

  For example, a filter of a water purifier has a high rate of deterioration when the amount of water used is large or when there are many impurities in the water, and the life of the filter changes depending on the situation at that time.

  It is necessary to replace the filter. When the filter is replaced, the water purifier must be stopped, and it is inconvenient if it is just preparing a meal.

  However, by storing the history of the degree of deterioration of the filter, it is possible to predict when the filter needs to be replaced in advance, so the filter should be replaced when water is not used immediately before the time when the filter needs to be replaced. If this is done, it will not be possible to use the water while it is being used, the filter performance can be easily maintained, and the comfort can be improved.

  INDUSTRIAL APPLICABILITY The present invention can be used for filter history management of an apparatus that blows air through a filter such as an air conditioner, an air purifier, and a cooling fan with a filter.

Explanatory drawing in the 1st Embodiment of this invention Graph showing the relationship between filter air volume and pressure loss The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention The figure showing the content displayed on the display apparatus in the 1st Embodiment of this invention

Explanation of symbols

1 Body Case 2 Heat Exchanger 3 Fan 4, 5 Filter 6, 7 Differential Pressure Gauge (Differential Pressure Measuring Means)
DESCRIPTION OF SYMBOLS 8 Power supply 9 Transmitting apparatus 10 Receiving apparatus 11 Calculation part 12 Display apparatus 13 Filter characteristic memory | storage device (filter characteristic memory | storage means)
14 History information storage device 15, 19, 21, 22, 25, 26, 28, 29 Solid line representing filter performance history 16, 17, 18, 31 Dashed line representing prediction of filter performance 20, 23, 24 Filter A vertical line representing the timing of events that may have an impact 27 A solid line representing a history of the amount that may affect the filter

Claims (13)

Deterioration information receiving means for receiving information indicating the degree of deterioration of a filter for purifying air or information for obtaining the degree of deterioration;
History information storage means for storing the information received by the deterioration information receiving means or the calculation result obtained from this information in association with information about the time when this information was acquired;
Display means for displaying the stored contents of the history information storage means;
A filter history management apparatus comprising: The filter history management apparatus according to claim 1, wherein the filter is a filter of an air conditioner. The filter history management apparatus according to claim 1, wherein the filter is a filter of an air purifier. The filter history management apparatus according to claim 1, wherein the filter is an exhaust fan filter. 5. The filter history management according to claim 1, wherein the display unit displays a value indicating a degree of deterioration of the filter in association with information about a time when the value is acquired. apparatus. 6. The filter history according to claim 5, wherein the display means can simultaneously display a value indicating a degree of deterioration of the filter and information indicating an occurrence of an event that may affect the deterioration of the filter. Management device. 6. The filter history management apparatus according to claim 5, wherein the display means can simultaneously display a value indicating a degree of deterioration of the filter and a numerical value indicating an amount that may affect the deterioration of the filter. 6. The filter history management according to claim 5, wherein the display means can simultaneously display the same kind of information of one week ago together with a time change of a value indicating a degree of deterioration of the filter or a speed of deterioration of the filter. apparatus. 6. The filter history management according to claim 5, wherein the display means can simultaneously display the same type of information of one year ago together with a time change of a value indicating a degree of deterioration of the filter or a speed of deterioration of the filter. apparatus. 5. The filter history management apparatus according to claim 1, wherein the degree of deterioration of a plurality of filters installed in series in the same ventilation path is displayed on the same screen. A graph is displayed with a horizontal axis indicating the degree of deterioration of one of the two filters installed in series in the same ventilation path and a vertical axis indicating the degree of deterioration of the other filter. The filter history management device according to any one of claims 1 to 4. Deterioration information receiving means for receiving information indicating the degree of deterioration of a filter for purifying water or input of information for obtaining the degree of deterioration;
History information storage means for storing the information received by the deterioration information receiving means or the calculation result obtained from this information in association with information about the time when this information was acquired;
Display means for displaying the stored contents of the history information storage means;
A filter history management apparatus comprising: The filter history management device according to claim 12, wherein the filter is a filter of a water treatment device.

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