TWM327473U - Detection device of dust amount - Google Patents

Detection device of dust amount Download PDF

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Publication number
TWM327473U
TWM327473U TW96211477U TW96211477U TWM327473U TW M327473 U TWM327473 U TW M327473U TW 96211477 U TW96211477 U TW 96211477U TW 96211477 U TW96211477 U TW 96211477U TW M327473 U TWM327473 U TW M327473U
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Taiwan
Prior art keywords
temperature
dust
temperature difference
detecting device
amount detecting
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TW96211477U
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Chinese (zh)
Inventor
jin-rong Xu
Sheng-Wen Huang
jun-yuan Zheng
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Everest Display Inc
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Priority to TW96211477U priority Critical patent/TWM327473U/en
Publication of TWM327473U publication Critical patent/TWM327473U/en

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  • Cooling Or The Like Of Electrical Apparatus (AREA)

Description

M327473 八、新型說明: 【新型所屬之技術領域】 本創作係有關一種灰塵量偵測裂置,特別係一種有助於使用者適 時對空氣濾淨單元進行更換或清洗的灰塵量偵測裝置。 【先前技術】 按,隨著科技的進步,人們已經發展出諸多電子裝置,且由於電M327473 VIII. New description: [New technical field] This creation is about a kind of dust detection and cracking, especially a dust quantity detecting device which helps the user to replace or clean the air filter unit in time. [Prior Art] Press, with the advancement of technology, people have developed many electronic devices, and because of electricity

子裝置往往具有多種發熱元件,所以當電子裝置在運作時,電子裝置 之内部溫度亦會逐漸升高,而假若電子裝置之内部的溫度環境過高, 就容易導致電子裝置發生故障、當機而無法正常運作。 疋故,為助於電子裝置之發熱元件所產生的熱能可快速散逸,通 常係會在電子裝置内設一散熱裝置,如設置一風扇來提高熱對流,以 使電子裝置在正常工作溫度環境下運作。且,在風扇之進風口或出風 口處設有-空氣滤淨單元,如渡網,而t風扇轉動時,就會帶動外部環 境之杈冷空氣經由濾、網進人電子裝置㈣,且風扇尚會將電子裝置内 部之較高溫空氣排出,以達到降溫效果。 然由於;慮網上通吊會累積一些灰塵,而一旦渡網上所累積的灰 塵過多時’通誠網的氣流量便會下降,所以風扇的轉速就會升高, 而電子裝置内的熱能並可能難以有效排出而影響其正常運作。 因此,本創作係針對上述t 困擾,梃供一種可以偵測空氣濾淨單元 之灰塵量的偵測裝置’以解決上述之缺失。 【新型内容】 在此具體且詳細敘述本創作之目 的’其為克服習知技術之缺點, 5 M327473 ](>年I丨月 丨修正m充 修正頁 遂提出一種創新的灰塵量偵測裝置,用於偵測一灰塵 累積程度,且灰塵量偵測裝置可安裝在一電子裝置内,以供電子裝置 根據灰塵量偵測裝置所偵測的結果判定而主動提醒使用者適時的更 換、清洗空氣濾淨單元,進而確保電子裝置可正常運作。 根據本創作所揭示的灰塵量偵測装置,其係位在一空氣滤淨單元與一 風扇之間,且空氣濾淨早元和風扇是位在電子裝置内。其中,此灰塵量偵測裝 置係包括一第一溫度感測器,用以感測到一環境溫度;一加熱器用以提 籲供熱能,及-第三溫度感測n,其位在此加熱H上並感測該加熱器之 溫度,根據此環境溫度與加熱器溫度間的溫度差ΔΤ1與一内建的基準溫度差 △ Τ2的比較絲’顺空_料元上所累積喊塵量程度。 且,本創作之電子裝置尚包括―控制單元與合的警示單元,其中控 制單元會計算溫度差Ml與基準溫度差ΔΤ2間的相差溫度ΔΤ,並進而將此相差 溫度Μ與-警示溫度作比較,假若相差溫度ΔΤ大於警示溫度時,控制單元會 使警示單元發出警示峨,者清洗或更換域瀘淨單元。 • 本創作之此些目的或其他目的對於此技藝之通常知識者而言,閱讀以下實 施例之禅細内容後係顯而易知的。 以便能進一步解釋本創作之專 先前的概述雛下麵詳細敘述都是範例, 利請求項。 【實施方式】 本創作揭示-種灰塵量偵測裝置,其應用在—電子裝置上,用以 偵測電子裝置上的4據淨單S之灰塵量程度,提醒使用者是否需進 行更換或清洗’其中電子裝U具有裝設風扇及空㈣淨單元的電子 6The sub-devices often have a variety of heating elements, so when the electronic device is in operation, the internal temperature of the electronic device will gradually increase, and if the internal temperature environment of the electronic device is too high, the electronic device may easily malfunction and crash. Not working properly. Therefore, in order to facilitate the rapid dissipation of heat generated by the heating elements of the electronic device, a heat sink is usually disposed in the electronic device, such as a fan is provided to improve the heat convection, so that the electronic device is in a normal working temperature environment. Operation. Moreover, an air filtering unit is provided at the air inlet or the air outlet of the fan, such as a ferry net, and when the t fan rotates, the cold air of the external environment is driven to enter the human electronic device (4) through the filter and the net, and the fan The higher temperature air inside the electronic device is still discharged to achieve the cooling effect. However, because of the accumulation of dust on the Internet, the airflow of the Tongcheng network will decrease once the accumulated dust on the network is reduced, so the fan speed will increase, and the heat energy in the electronic device will increase. And it may be difficult to effectively discharge it and affect its normal operation. Therefore, the present invention is directed to the above-mentioned t problem, and provides a detecting device that can detect the amount of dust of the air filtering unit to solve the above-mentioned deficiency. [New content] The purpose of this creation is specifically and in detail described here. "To overcome the shortcomings of the prior art, 5 M327473] (>Yiyue 丨 丨 m m m 遂 遂 遂 遂 遂 遂 遂 创新 创新 创新 创新 创新 创新 创新For detecting the degree of dust accumulation, the dust amount detecting device can be installed in an electronic device for the electronic device to actively remind the user to replace and clean at a timely time according to the result of the detection by the dust amount detecting device. The air filter unit ensures that the electronic device can operate normally. According to the dust detection device disclosed in the present invention, it is positioned between an air filter unit and a fan, and the air filter element and the fan are in position. In the electronic device, the dust amount detecting device includes a first temperature sensor for sensing an ambient temperature, a heater for promoting heat energy, and a third temperature sensing device. , where it is heated H and senses the temperature of the heater, based on the temperature difference ΔΤ1 between the ambient temperature and the heater temperature and a built-in reference temperature difference Δ Τ 2 Tired The electronic device of the present invention further includes a control unit and a combined warning unit, wherein the control unit calculates the phase difference temperature ΔΤ between the temperature difference M1 and the reference temperature difference ΔΤ2, and further the temperature difference Μ In comparison with the warning temperature, if the phase difference temperature ΔΤ is greater than the warning temperature, the control unit will cause the warning unit to issue a warning 峨 to clean or replace the domain cleaning unit. • These or other purposes of the creation are common to the art. For the knowledge worker, it is obvious to read the simplifications of the following embodiments. In order to further explain the prior summary of the creation, the following detailed description is an example, and the claim is provided. [Embodiment] This creation A method for detecting a dust amount, which is applied to an electronic device for detecting the amount of dust on the electronic device, and reminding the user whether to replace or clean the electronic device Equipped with a fan and an empty (four) net unit of electronics 6

M327473 、除濕機或其罗mi 〇 電子裝置結構示意圖。如圖所示, I 12、一風扇14、一空氣濾淨單元 裝置,如投影機、電腦、空調裝置、除为 請參照第一圖,係本創作之一電子身 本創作之電子裝置10内設有一風道12、 16 ’如滤網’與—控制單元13用以控制電子裝置的運作,並麵合風扇 14以控制風扇14之轉速,且當風扇14轉動時會帶動電子裝置1〇外 的氣流經由空氣據淨單元16流進電子裝置H)内,及—記憶體15輕合 —控制單元13 ’用以儲存資料,其中空氣濾淨單元16係位在風道12之 • 一端,風扇14則係位在風道12之另一端,且記憶體15可係一電子抹 除式唯讀記憶體(EEPROM)。 请參照第二圖,揭示一灰塵量偵測裝置18設置在電子裝置内, 以债測空氣濾淨單元16上所累積的灰塵量程度。如圖所示,灰塵量偵 測裝置18 75位在電子裝置μ 10且位在空氣濾淨單元16與風扇14之間, 且灰塵量偵測裝置18係包括兩溫度感測器⑻、182及一加熱器183係用以提 供熱能,其中加熱器183可係-電阻,如水泥電阻或熱敏電阻所構成,並有一 φ固定電壓被施加在電阻兩端,而有固定的溫度,且溫度感測器⑻係位在風道 12之-位置上或餘在電子裝置㈣之任—位置,且溫度感卿⑻麵合電子 裝置10之控鮮元13,_於制―環境溫度Ή並將此環境溫度Ή結果傳送 至控制單το 13,加熱器183係位在風道12之另一位置上,且溫度感測器182位 在加熱器183上並麵合電子裝置1〇之控制單元13,用於感測加熱器183的溫度 T2並將此加熱器溫度T2、结果傳送至控制單元13,之後控制單元計算環境溫 度Τ1與加熱器溫度Τ2間的溫度差⑽,並將此溫度差ΔΤ1與一内建在記憶體 15内的基準溫度差ΔΤ2作一比較,即計算溫度差—與基準溫度差謂間的 M327473 %年ii月>7日 修正 補无 修正頁 相差溫度ΔΤ( = ΔΉ-ΔΤ2),根據此相差溫度ΔΤ就可判上 所累積的灰塵量程度,且當此相差溫度Μ愈大時,表示空輯淨單元16上的 灰塵量較多’另,㈣單元13斜賴境溫度τ卜加熱度τ2、相差溫度 △ Τ之溫度值資料儲存在記憶體15内。 其中’基準溫度差ΔΤ2係在空氣濾淨單元16未受灰塵量阻塞時,以 當下溫度感測器181所感測的環境溫度Τ1,與溫度感測器182所感測 的加熱器溫度Τ2,之溫度差作為此基準溫度差ΔΤ2,即_ # T1 ,其中溫度感測器18卜182會分別將環境溫度ΤΓ 、加熱器Τ2,溫度 傳送到控制單元13而計#出基準溫度差ΔΤ2,並將其儲存在記憶體15 内’以供參照比較;且,由於當空氣據淨單元16之受灰塵阻塞時,控制單元 13會使風扇14轉速加快’所以會有較大的風量吹過加熱器183而使加熱器溫度 Τ2下降,故環境溫度τι與加熱器溫度Τ2間的溫度差ΔΤ1變大,另當空氣濾 淨單元16嚴重遭受灰塵阻塞時,控制單元13依舊會使風扇14轉速加快,但因 為空氣濾淨單元16嚴重阻塞,所以吹過加熱器183的風量較小而使加熱器的溫 鲁度Τ2逐漸上升,因此在這種情況下,環境溫度Ή與加熱器溫度τ2間的溫度差 △τι亦是敎。纽’加顯溫度Τ2不論是溫度上升或下降都是表示有灰塵 置累積在空氣濾淨單元16,且當環境溫度Τ1與加熱器溫度Τ2的溫度差ΔΤ1與 内建的基準溫度差ΔΤ2相差愈大,即表示空麟淨單元16上所累積的灰塵量較 多’阻塞程度較高。 再者’為適時醒使用者對空氣濾淨單元Μ進行更換或清洗,電子裝置1〇 可更包括-警示單元2G以自動提醒使用者,如第三圖所示之電子裝置與灰塵量 偵測裝置之電路示意圖,警示單元2Q齡控制單元13,且記舰15内存有一 8 M327473 於年丨I月 修正 修正頁 且一 旦相差溫度ΔΤ係超過-警示溫度時,控制單元以可致動警示單元別發出一警 不訊號’例如疋燈號、-聲音訊號來警示使用者,或者是發出一勞幕顯示⑽) 訊號,透過電子裝置1G之-螢幕(圖中未示)顯示空氣據淨單元16目前的灰 塵量累積、阻絲度為何,係高程度、中程度或是係低程度,甚至當相差溫度 △ Τ嚴重超過-警示溫度時,控制單元13就直接關電子裝置,⑽免電子裝 置10溫度過高。 由此可知,透過本創作所揭示的灰塵量偵測裝置,即可協助使用 者適時對空氣渡淨單元進行更換或清洗,而避免電子裝置因溫度升古 而發生故障;且,舉凡具有風扇及空氣濾淨單元的電子裝置,皆可利 用本創作之灰塵量偵測裝置進行灰塵量偵測。 以上所述之實施例僅係為說明本創作之技術思想及特點,其目的 在使熟習此項技藝之人士能夠瞭解本創作之内容並據以實施,卷不外 以之限定本創作之專利範圍,即大凡依本創作所揭示之精神所作 _ 、 之均 Φ 等變化或修飾,仍應涵蓋在本創作之專利範圍内。 【圖式簡單說明】 第一圖係本創作之電子裝置結構示意圖。 第二圖係本創作之電子裝置與灰塵量偵測裝置結構示意圖。 第三圖係本創作之電子裝置與灰塵量偵測裝置之電路示意圖。 【主要元件符號說明】 10電子裝置 12風道 13控制單元 14風扇 9 M327473 15記憶體 16空氣濾淨單元 18灰塵量偵測裝置 181、182溫度感測器 183加熱器 20警示單元Schematic diagram of M327473, dehumidifier or its electronic device. As shown in the figure, I 12, a fan 14, an air filter unit, such as a projector, a computer, an air conditioner, and the like, refer to the first figure, which is one of the electronic devices 10 created by the electronic body. A duct 12, 16 'such as a filter 'and control unit 13 is provided for controlling the operation of the electronic device, and the fan 14 is combined to control the rotation speed of the fan 14 , and when the fan 14 rotates, the electronic device 1 is driven. The airflow flows into the electronic device H) via the air purification unit 16, and the memory 15 is lightly coupled to the control unit 13' for storing data, wherein the air filter unit 16 is at one end of the air duct 12, the fan 14 is tied to the other end of the air duct 12, and the memory 15 can be an electronic erasable read only memory (EEPROM). Referring to the second figure, a dust amount detecting device 18 is disposed in the electronic device to measure the amount of dust accumulated on the air filtering unit 16. As shown, the dust amount detecting device 18 is located between the electronic device μ 10 and between the air filtering unit 16 and the fan 14, and the dust amount detecting device 18 includes two temperature sensors (8), 182 and A heater 183 is used to provide thermal energy, wherein the heater 183 can be formed by a resistor, such as a cement resistor or a thermistor, and has a φ fixed voltage applied across the resistor, with a fixed temperature and a sense of temperature. The detector (8) is located at the position of the air duct 12 or at the position of the electronic device (4), and the temperature sensing (8) is used to control the fresh element 13 of the electronic device 10, and the ambient temperature is The ambient temperature Ή result is transmitted to the control unit το 13, the heater 183 is located at another position of the air duct 12, and the temperature sensor 182 is located on the heater 183 and faces the control unit 13 of the electronic device 1 It is used to sense the temperature T2 of the heater 183 and transmit the heater temperature T2 to the control unit 13, after which the control unit calculates the temperature difference (10) between the ambient temperature Τ1 and the heater temperature Τ2, and the temperature difference ΔΤ1 is A reference temperature difference ΔΤ2 built into the memory 15 is made The comparison, that is, the calculation of the temperature difference - M327473% year ii month between the reference temperature difference and the 7th day correction correction page difference temperature ΔΤ (= ΔΉ-ΔΤ2), according to the phase difference temperature ΔΤ can be judged as accumulated The amount of dust, and when the phase difference temperature is larger, it means that the amount of dust on the empty unit 16 is larger. In addition, (4) the temperature value of the unit 13 oblique temperature τ, heating degree τ2, phase difference temperature Δ Τ It is stored in the memory 15. Wherein the 'reference temperature difference ΔΤ2 is the ambient temperature Τ1 sensed by the current temperature sensor 181 and the heater temperature Τ2 sensed by the temperature sensor 182 when the air filter unit 16 is not blocked by the amount of dust. The difference is taken as the reference temperature difference ΔΤ2, that is, _#T1, wherein the temperature sensor 18 182 transmits the ambient temperature 、, the heater Τ2, the temperature to the control unit 13 and the reference temperature difference ΔΤ2, and Stored in the memory 15 for comparison; and since the control unit 13 speeds up the fan 14 when the air is blocked by dust according to the clean unit 16, a large amount of air is blown through the heater 183. When the heater temperature Τ2 is lowered, the temperature difference ΔΤ1 between the ambient temperature τι and the heater temperature Τ2 becomes larger, and when the air filter unit 16 is severely subjected to dust clogging, the control unit 13 still speeds up the fan 14 speed, but because The air filter unit 16 is severely blocked, so that the amount of air blown through the heater 183 is small and the temperature Τ2 of the heater is gradually increased, so in this case, between the ambient temperature 加热器 and the heater temperature τ2 The temperature difference Δτι is also 敎. New's addition temperature Τ2, whether it is temperature rise or fall, indicates that dust accumulates in the air filter unit 16, and the temperature difference ΔΤ1 between the ambient temperature Τ1 and the heater temperature Τ2 differs from the built-in reference temperature difference ΔΤ2. Large, that is, the amount of dust accumulated on the empty net unit 16 is relatively high. In addition, the user can replace or clean the air filter unit for a timely wake-up, and the electronic device 1 can further include a warning unit 2G to automatically remind the user, such as the electronic device and the dust amount detection shown in the third figure. The circuit diagram of the device, the warning unit 2Q age control unit 13, and the memory of the ship 15 has an 8 M327473 correction correction page in the year of the first month and once the phase difference temperature ΔΤ exceeds the warning temperature, the control unit activates the warning unit. Send a warning signal, such as a slamming signal, - an audible signal to alert the user, or issue a screen display (10) signal, through the electronic device 1G - screen (not shown) to display the air unit 16 The amount of dust accumulated, the degree of resistance, whether it is high, medium or low, even when the phase difference temperature △ Τ seriously exceeds the warning temperature, the control unit 13 directly shuts down the electronic device, (10) the temperature of the electronic device 10 Too high. It can be seen that the dust amount detecting device disclosed in the present invention can assist the user to replace or clean the air cleaning unit in time, and avoid the malfunction of the electronic device due to temperature rise; and The electronic device of the air filter unit can use the dust detection device of the present invention to detect the amount of dust. The embodiments described above are only for explaining the technical idea and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement them according to the volume, and the volume is limited to the patent scope of the creation. , that is, changes or modifications made by XX, Φ, etc. in accordance with the spirit revealed by this creation should still be covered by the scope of this creation patent. [Simple description of the diagram] The first diagram is a schematic diagram of the structure of the electronic device of the present creation. The second figure is a schematic diagram of the structure of the electronic device and the dust amount detecting device of the present invention. The third figure is a circuit diagram of the electronic device and the dust amount detecting device of the present invention. [Main component symbol description] 10 electronic device 12 air channel 13 control unit 14 fan 9 M327473 15 memory 16 air filter unit 18 dust amount detection device 181, 182 temperature sensor 183 heater 20 warning unit

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Claims (1)

M327473M327473 ,該灰塵量偵測 ι· 一種灰塵量偵測裝置,其位在一空氣濾淨單元與一風扇之間, 裝置包括: 一第一溫度感測器,用以感測一環境溫度; 一加熱器;及 -第二溫度感測器,其位在該加熱器上並感測該加熱器之溫度,根據 該環境溫度與該加熱雜賴的溫度差ΔΤ1與,建縣準溫度差δτ2的比較 φ 結果,判斷該空氣濾淨單元上所累積的灰塵量程度。 ’其中該基準溫度差 2·如申請專利範圍第1項所述之灰塵量偵測裝置 △ Τ2係以該空氣濾淨單元未受灰塵量阻塞時,當下該第一、第二溫度 感測器分別所感測的環境溫度和該加熱器溫度的溫度差作為該基準溫 度差ΔΤ2。 3.如申請專利範圍第丨項所述之灰塵量偵測裝置,其中該環境溫度與該加熱器 溫度的溫度差ΔΤ1係和1¾基準溫度差ΔΤ2相差愈大,表示該空賊淨單元上的 0 灰塵量較多。 4.如申請專利範圍第1項所述之灰塵量_裝置,其中該空氣濾淨單元與該風 扇是位在一電子裝置内。 5·如申請專利範圍第4項所述之灰塵量偵測裝置,其中該電子裝置包括一控制 單元,其耦合該第一、第二溫度感測器以計算該環境溫度與該加熱器溫 度的溫度差。 6·如申請專利範圍第5項所述之灰塵量偵測裝置,其中當該溫度差ΔΤ1與該基 準溫度差ΔΤ2間的相差溫度係超過一警示溫度時,該控制單元關閉該電子裝置。 M327473 修正頁 一·,申請專利範圍第5項所述之灰塵量侧裝置,其中該電子裝置更包括一警 不單兀,其耦合該控制單元,當該溫度差ΔΤ1與該基準溫度差ΔΤ2間的相差溫 度係超過—警示溫度時,該警示單元發出-警示訊號。 9·如申請專利範圍第8項所述之灰塵量偵測裝置,其中該警示訊號係一燈號。The dust amount detecting device is disposed between an air filter unit and a fan, and the device includes: a first temperature sensor for sensing an ambient temperature; And a second temperature sensor located on the heater and sensing the temperature of the heater, according to the temperature difference between the ambient temperature and the heating ΔΤ1, and the comparison of the quasi-temperature difference δτ2 of Jianxian County φ As a result, the amount of dust accumulated on the air filter unit is judged. 'The reference temperature difference 2 · The dust amount detecting device Δ Τ 2 as described in the first paragraph of the patent application section is when the air filtering unit is not blocked by the amount of dust, and the first and second temperature sensors are present The temperature difference between the sensed ambient temperature and the heater temperature is taken as the reference temperature difference ΔΤ2. 3. The dust amount detecting device according to claim 2, wherein the temperature difference between the ambient temperature and the heater temperature ΔΤ1 and the reference temperature difference ΔΤ2 are larger, indicating that the empty thief is on the clean unit 0 The amount of dust is large. 4. The dust quantity device of claim 1, wherein the air filter unit and the fan are located in an electronic device. 5. The dust amount detecting device of claim 4, wherein the electronic device comprises a control unit coupled to the first and second temperature sensors to calculate the ambient temperature and the heater temperature. Temperature difference. 6. The dust amount detecting device according to claim 5, wherein the control unit turns off the electronic device when a temperature difference between the temperature difference ΔΤ1 and the reference temperature difference ΔΤ2 exceeds a warning temperature. M327473. The dust amount side device of claim 5, wherein the electronic device further comprises a warning unit coupled to the control unit when the temperature difference ΔΤ1 is between the reference temperature difference ΔΤ2 The warning unit sends a warning signal when the phase difference temperature exceeds the warning temperature. 9. The dust amount detecting device according to claim 8, wherein the warning signal is a light signal. ψΗ丨月Haoyue 1G·如申請專利範圍第8項所述之灰塵量偵測裝置,其中該警示訊號係一聲音訊 號。 U·如申請專利範圍第8項所述之灰塵量偵測裝置,其中該警示訊號係該電子裝 置之一螢幕顯示(OSD)訊號。 12·如申請專利範圍第1項所述之灰塵量偵測裝置,其中該加熱器係一電阻,並 有〜固定電壓被施加在該電阻兩端9 13·如申請專利範圍第1項所述之灰塵量偵測裝置,其中該空氣濾淨單元為一濾 網。 •M3274731G. The dust amount detecting device of claim 8, wherein the warning signal is an audio signal. U. The dust amount detecting device of claim 8, wherein the warning signal is an on-screen display (OSD) signal of the electronic device. 12. The dust amount detecting device according to claim 1, wherein the heater is a resistor, and a fixed voltage is applied to both ends of the resistor. 13 13 as described in claim 1 The dust amount detecting device, wherein the air filtering unit is a filter. •M327473 M327473 七、指定代表圖·· (一) 本案指定代表圖為:第(二)圖。 (二) 本代表圖之元件符號簡單說明: 10電子裝置 12風道 13控制單元 14風扇 15記憶體 16空氣濾淨單元 18灰塵量偵測裝置M327473 VII. Designation of Representative Representatives (1) The representative representative of the case is: (2). (2) Brief description of the symbol of the representative figure: 10 electronic device 12 air duct 13 control unit 14 fan 15 memory 16 air filter unit 18 dust amount detecting device 181、182溫度感測器 183加熱器 20警示單元181, 182 temperature sensor 183 heater 20 warning unit
TW96211477U 2007-07-13 2007-07-13 Detection device of dust amount TWM327473U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI607795B (en) * 2016-09-20 2017-12-11 Matsushita Electric Taiwan Co Ltd Ventilation equipment filter detection method and ventilation equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI607795B (en) * 2016-09-20 2017-12-11 Matsushita Electric Taiwan Co Ltd Ventilation equipment filter detection method and ventilation equipment

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