JPH0352164Y2 - - Google Patents
Info
- Publication number
- JPH0352164Y2 JPH0352164Y2 JP1985178108U JP17810885U JPH0352164Y2 JP H0352164 Y2 JPH0352164 Y2 JP H0352164Y2 JP 1985178108 U JP1985178108 U JP 1985178108U JP 17810885 U JP17810885 U JP 17810885U JP H0352164 Y2 JPH0352164 Y2 JP H0352164Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- evaporator
- supply tank
- water supply
- air conditioner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 137
- 238000001514 detection method Methods 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 12
- 239000007924 injection Substances 0.000 claims description 12
- 230000002265 prevention Effects 0.000 claims description 2
- 235000019645 odor Nutrition 0.000 description 16
- 244000005700 microbiome Species 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 13
- 241000894006 Bacteria Species 0.000 description 8
- 241000233866 Fungi Species 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000001954 sterilising effect Effects 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 208000035985 Body Odor Diseases 0.000 description 2
- 206010040904 Skin odour abnormal Diseases 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000002537 cosmetic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002207 metabolite Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000002386 air freshener Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008223 sterile water Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
Description
産業上の利用分野
本考案は、自動車用空調装置のエバポレータに
付着する凝縮水を有効利用して、悪臭発生原因と
なる物質を洗浄除去する悪臭防止装置に関する。
従来の技術
自動車に搭載された空調装置は、使用期間の経
過に伴つて、吹出口より給送される空気が乗員に
対して不快感を与える程の悪臭を含むものとなる
場合がある。かかる悪臭の原因は、(イ)空調装置を
内気循環モードで使用した場合、内気吸入により
吸入される内気中の樹脂部品の有機化合物，エミ
ツシヨン，持込み臭気と称される体臭，化粧品，
芳香剤，煙草臭等の成分部質。(ロ)外気導入モード
時にあつては、外気吸入口より吸入される外気中
の汚染大気，デイーゼルエンジン車より排出され
る黒煙等の他車の排気ガス，空気中に飛散した土
壌成分粒子等。(ハ)以上の微量成分及び車室内大気
中に103〜104個／c.c.存在する微生物が空調装置の
通風系路内を通過する際、エバポレータに接し、
大半は該エバポレータ表面に付着している凝縮水
中に混入、捕集され、凝着される。このような状
態において、空調装置を停止し、エバポレータへ
の冷媒供給が停止すると、エバポレータ表面温度
は急激に上昇する。かかる条件下において、エバ
ポレータのフイン上に存在する微生物の検出と固
定を行なつた結果、真菌類，細菌類の存在が確認
されているが、これらの生臭条件として前記の土
壌成分（主として無類塩類）、有機物等は、絶好
の栄養源となり、さらに適度の水分と発育適温の
環境に保持されることにより、微生物の繁殖が促
進された結果生ずる臭い成分を含む代謝産物等、
以上の(イ)〜(ハ)をあげることができる。
この(ハ)に示した事項を原因とする臭気に対して
は、例えば実開昭57−70908号に開示されている
ように、エバポレータに対向して液噴射ノズルを
配設し、該液噴射ノズルに所定の洗浄液タンクか
ら洗浄液を圧送し、該洗浄液によつてエバポレー
タの表面に付着している真菌，細菌類を洗浄除去
する装置が提案されている。
考案が解決しようとする問題点
しかしながらかかる従来の装置にあつては、前
記洗浄液タンクの容量は、他の車両搭載部品との
関係において制限を受けることから、夏期等周囲
温度の上昇に伴つて微生物の繁殖が著るしい時期
において、頻繁に洗浄を行なうに充分な液量を収
容し得るものではなく、又あえて大容量のタンク
を用いた場合には、使用頻度の低い時期にタンク
内に残留し続ける洗浄液に微生物が繁殖し、洗浄
効果が低下するおそれがあつた。
問題点を解決するための手段
本考案は、このような従来の実情に鑑みてなさ
れたものであり、自動車用空調装置のエバポレー
タを指向し液噴射ノズルを配設するとともに、該
液噴射ノズルを送水ポンプを介して給水タンクに
連通し、該給水タンク内に殺菌装置及び水位セン
サを配設する一方、前記エバポレータに付着する
凝縮水を前記給水タンクに導く導水路を設け、該
導水路に車外排水路を分岐形成するとともに、該
車外排水路と導水路とを選択的に開閉する弁体を
設け、前記上部，下部水位センサの出力信号に基
づいて、前記送水ポンプ，殺菌装置及び弁体を制
御する制御手段を設けてある。
作 用
前記構成において、空調装置の稼働に伴つてエ
バポレータに凝縮水が付着すると、該凝縮水は導
水路を介して給水タンク内に収容される。該給水
タンク内の水位が下部水位センサに到達すると、
該上部水位センサはこれを検出し、超音波発生器
は検出信号に基づいて作動する。このため凝縮水
中に含有されている細菌，真菌類の微生物は、殺
菌装置たる超音波発生器から発振される超音波に
よつて死滅し、凝縮水は洗浄に用い得る水とな
る。そして凝縮水の給水タンク内水位が上部セン
サに到達すると該上部センサの出力信号に基づい
て、送水ポンプが作動し、かつ弁体が作動して車
外排出路を開放する。したがつて送水ポンプによ
つて圧送された凝縮水は液噴射ノズルからエバポ
レータを指向して吹き出され、該エバポレータに
付着している微生物を洗浄除去し、該微生物とと
もに車外排水路から排出され、凝縮水を有効利用
して悪臭原因となる微生物を除去し得るのであ
る。
実施例
以下本考案の一実施例について図面に従つて説
明する。すなわち第１図に示したように、空調装
置本体１は、ブロアユニツト２，クーリングユニ
ツト３，ヒータユニツト４を連結して構成されて
いる。前記ブロアユニツト２には、外気吸入口
５，内気吸入口６，及びこの両吸入口５，６を開
閉するインテークダンパ７が設けられており、内
部にはモータ８によつて駆動されるフアン９が配
設されている。前記クーリングユニツト３内に
は、エバポレーター１０が配設されており該エバ
ポレータ１０の上流側すなわちブロアユニツト２
側には、液噴射ノズル１１が配設されている。該
液噴射ノズル１１は、前記エバポレーター１０を
指向する複数の噴射口１２……を有し、下端部に
嵌着された管路１３を介して給水タンク１４に連
通されており、前記管路１３には送水ポンプ１５
が介装されている。前記給水タンク１４の底部に
は、排水孔１６が形成されており、該排水孔１６
には二方電磁弁１７が取り付けられている。さら
に給水タンク１４内には、殺菌装置たる超音波発
生器１８が配設されており、又給水タンク１４内
部側壁には、上部水位検出装置たる上部水位検出
スイツチ１９及び下部水位検出装置たる下部水位
検出スイツチ２０が対設されている。一方前記ク
ーリングユニツト３の底壁には、前記給水タンク
１４の上壁に連通する導水路２１が設けられてお
り、該導水路２１の中途部には、車外排水路２２
が分岐形成されている。この分岐部位には、前記
導水路２１と車外排水路２２とを選択的に開閉す
る弁体たる三方電磁弁２３が取り付けられてい
る。該三方電磁弁２３及び前記二方電磁弁１７，
超音波発生器１８，送水ポンプ１５は、マイクロ
コンピユータで構成された制御装置２４の出力部
に接続されており、前記上部水位検出スイツチ１
９及び下部水位検出スイツチ２０は制御装置２４
の入力部に接続されている。他方前記ヒータユニ
ツト４には、エンジン冷却水を熱源とするヒータ
コア２５及び該ヒータコア２５の側方に形成され
たバイパス通路２６を開閉するエアミツクスダン
パ２７が設けられている。又このヒータユニツト
４には、車室内のインストルメントパネルに開口
されたベンチレータ吹出口２８，及びフロア近傍
に開口されたフート吹出口２９が設けられてお
り、両吹出口２８，２９にはダンパ３０，３１が
配設されている。
次に以上の構成に係る本実施例の作用を第２，
３図に示したフローチヤートに従つて説明する。
すなわち図外のエアコンスイツチを投入すると
（ステツプ），空調装置本体１及び制御装置２４
は起動し、フアン９の回転に伴つて外気吸入口５
又は内気吸入口６から空気が給送され、該空気は
エバポレータ１０と熱交換して冷却される。この
とき空気中に含まれていた水分は、凝縮水として
エバポレータ１０表面に付着し、クーリングユニ
ツト３の底壁に滴下して導水路２１内に流入す
る。一方制御装置２４は、出力信号によつて三方
電磁弁２３を、導水路２１が給水タンク１４に連
通し、かつ排水路２２が閉塞する貯水位置に制御
する（ステツプ）とともに、二方電磁弁１７を
制御して排水孔１６を閉塞する（ステツプ）。
これによつて給水タンク１４内には、下記表に示
したように、エバポレーター１０入口空気温度及
びエバポレータ１０入口空気相対湿度に対応した
除湿水量の凝縮水Ｗが流入，貯溜する。
INDUSTRIAL APPLICATION FIELD The present invention relates to an odor prevention device that effectively utilizes condensed water adhering to an evaporator of an automobile air conditioner to clean and remove substances that cause odor generation. BACKGROUND OF THE INVENTION As the air conditioner installed in an automobile is used for a long time, the air supplied from the air outlet may contain a bad odor that is unpleasant to the occupants. The causes of such bad odors are: (a) When the air conditioner is used in the internal air circulation mode, organic compounds and emissions from resin parts in the air inhaled when the air conditioner is used in internal air circulation mode, body odor called carry-in odor, cosmetics,
Ingredients such as air fresheners and cigarette odors. (b) When in outside air introduction mode, polluted air in the outside air taken in from the outside air intake port, exhaust gas from other vehicles such as black smoke emitted from diesel engine cars, soil component particles scattered in the air, etc. . (c) When the above trace components and microorganisms present in the air inside the vehicle at 10 3 to 10 4 per cc pass through the ventilation system of the air conditioner, they come into contact with the evaporator;
Most of it is mixed into the condensed water adhering to the surface of the evaporator, is collected, and is then coagulated. In such a state, when the air conditioner is stopped and refrigerant supply to the evaporator is stopped, the evaporator surface temperature rapidly increases. As a result of detecting and fixing microorganisms present on the fins of the evaporator under these conditions, the presence of fungi and bacteria was confirmed. ), organic matter, etc. are excellent sources of nutrients, and when kept in an environment with adequate moisture and temperature suitable for growth, the growth of microorganisms is promoted, resulting in metabolites containing odor components, etc.
I can list (a) to (c) above. To deal with the odor caused by the matters shown in (c), for example, as disclosed in Utility Model Application No. 57-70908, a liquid injection nozzle is disposed opposite to the evaporator, and the liquid injection nozzle is disposed opposite to the evaporator. An apparatus has been proposed in which a cleaning liquid is force-fed from a predetermined cleaning liquid tank to a nozzle, and the cleaning liquid is used to wash and remove fungi and bacteria adhering to the surface of an evaporator. Problems to be Solved by the Invention However, in such conventional devices, the capacity of the cleaning liquid tank is limited due to the relationship with other vehicle-mounted parts. It is not possible to store enough liquid for frequent cleaning during periods when the number of bacteria is increasing, and if a large-capacity tank is used, there may be residual liquid remaining in the tank during periods of infrequent use. There was a risk that microorganisms would grow in the cleaning solution that continued to be washed, reducing the cleaning effectiveness. Means for Solving the Problems The present invention has been made in view of the above-mentioned conventional circumstances, and it is directed to the evaporator of an automobile air conditioner and is equipped with a liquid injection nozzle. A water supply tank is connected to the water supply tank through a water supply pump, and a sterilizer and a water level sensor are disposed inside the water supply tank, while a conduit is provided to guide condensed water adhering to the evaporator to the water supply tank, and a conduit is provided outside the vehicle in the conduit. The drainage channel is branched, and a valve body is provided to selectively open and close the outside drainage channel and the water conduit, and the water pump, the sterilizer, and the valve body are operated based on the output signals of the upper and lower water level sensors. Control means are provided for controlling. Function In the above configuration, when condensed water adheres to the evaporator as the air conditioner operates, the condensed water is accommodated in the water supply tank via the water conduit. When the water level in the water tank reaches the lower water level sensor,
The upper water level sensor detects this, and the ultrasonic generator operates based on the detection signal. Therefore, microorganisms such as bacteria and fungi contained in the condensed water are killed by ultrasonic waves emitted from an ultrasonic generator serving as a sterilization device, and the condensed water becomes water that can be used for cleaning. When the water level of the condensed water in the water supply tank reaches the upper sensor, the water pump is activated based on the output signal of the upper sensor, and the valve body is activated to open the exhaust passage outside the vehicle. Therefore, the condensed water pumped by the water pump is blown out from the liquid injection nozzle toward the evaporator, washes and removes the microorganisms attached to the evaporator, and is discharged together with the microorganisms from the drainage channel outside the vehicle, where it is condensed. By effectively using water, microorganisms that cause bad odors can be removed. Embodiment An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 1, the air conditioner main body 1 is constructed by connecting a blower unit 2, a cooling unit 3, and a heater unit 4. The blower unit 2 is provided with an outside air intake 5, an inside air intake 6, and an intake damper 7 for opening and closing both intakes 5 and 6. A fan 9 driven by a motor 8 is installed inside the blower unit 2. is installed. An evaporator 10 is disposed inside the cooling unit 3, and the upstream side of the evaporator 10, that is, the blower unit 2
A liquid jet nozzle 11 is arranged on the side. The liquid injection nozzle 11 has a plurality of injection ports 12 pointing toward the evaporator 10, and communicates with a water supply tank 14 via a pipe line 13 fitted at the lower end. There is a water pump 15
is interposed. A drainage hole 16 is formed at the bottom of the water tank 14.
A two-way solenoid valve 17 is attached to the. Furthermore, an ultrasonic generator 18 serving as a sterilization device is disposed inside the water supply tank 14, and an upper water level detection switch 19 serving as an upper water level detection device and a lower water level detection switch 19 serving as a lower water level detection device are provided on the inner side wall of the water supply tank 14. A detection switch 20 is provided oppositely. On the other hand, a water conduit 21 is provided on the bottom wall of the cooling unit 3 and communicates with the upper wall of the water tank 14.
are branched. A three-way solenoid valve 23, which is a valve body that selectively opens and closes the water conduit 21 and the vehicle exterior drainage channel 22, is attached to this branch portion. the three-way solenoid valve 23 and the two-way solenoid valve 17,
The ultrasonic generator 18 and the water pump 15 are connected to the output section of a control device 24 composed of a microcomputer, and the upper water level detection switch 1
9 and the lower water level detection switch 20 are the control device 24
is connected to the input section of the On the other hand, the heater unit 4 is provided with a heater core 25 that uses engine cooling water as a heat source, and an air mix damper 27 that opens and closes a bypass passage 26 formed on the side of the heater core 25. The heater unit 4 is also provided with a ventilator outlet 28 that opens in the instrument panel in the vehicle interior, and a foot outlet 29 that opens near the floor. , 31 are arranged. Next, the operation of this embodiment according to the above configuration will be explained in the second section.
This will be explained according to the flowchart shown in FIG.
That is, when the air conditioner switch (not shown) is turned on (step), the air conditioner main body 1 and the control device 24
starts, and as the fan 9 rotates, the outside air intake port 5
Alternatively, air is supplied from the inside air intake port 6, and the air is cooled by exchanging heat with the evaporator 10. At this time, the moisture contained in the air adheres to the surface of the evaporator 10 as condensed water, drips onto the bottom wall of the cooling unit 3, and flows into the water conduit 21. On the other hand, the control device 24 controls the three-way solenoid valve 23 to a water storage position where the water conduit 21 communicates with the water supply tank 14 and the drain channel 22 is closed (step), and the two-way solenoid valve 17 is controlled to close the drain hole 16 (step).
As a result, condensed water W in an amount of dehumidified water corresponding to the evaporator 10 inlet air temperature and evaporator 10 inlet air relative humidity flows into the water supply tank 14 and is stored therein, as shown in the table below.
【表】
その間凝縮水Ｗの水位が下部水位検出スイツチ
２０に到着した（ON）か否かを判別し（ステツ
プ），前記水位が下部水位検出スイツチ２０に
到着するまでの間ステツプ〜のループを繰り
返す。そして凝縮水Ｗの水位が下部水位検出スイ
ツチ１０に到達し、該下部水位検出スイツチ１０
のON信号が制御装置２４に入力されると、該制
御装置２４は殺菌装置たる超音波発生器１８に作
動指令信号を出力し、該超音波発生器１８は200
〜1500KHzの超音波を発振する（ステツプ）。
該超音波発生器１８の200〜1500KHz（周波数20
〜150サイクル／sec）の超音波は、短時間中に細
菌，芽胞の殺菌に強力有効に作用し、水中に存在
している細菌をも死滅させ得る特性を有する。し
たがつて、エバポレータ１０表面に繁殖し、剥離
して凝縮水Ｗ中に浮遊する真菌，細菌類は、前記
超音波によつて死滅し、凝縮水Ｗは、無菌の洗浄
水として適するものとなる。そして凝縮水Ｗの水
位が上部水位検出スイツチ１９に到達すると（ス
テツプ，制御装置２４の出力信号によつて、三
方電磁弁２３は作動し導水路２１の給水タンク１
４側を閉塞する排水位置となるとともに、車外排
水路２２を開放し、さらに送水ポンプ１５は起動
する（ステツプ，）。これによつて給水タン
ク１４内に貯留されていた凝縮水Ｗは、管路１３
を介して液噴射ノズル１１に圧送され、噴射口１
２…からエバポレータ１０を指向して噴射され
る。したがつてエバポレータ１０のフイン表面に
付着していた、体臭，化粧品，芳香剤，煙草等の
臭気微粒子，土壌成分粒子，これらを栄養源とし
て繁殖した真菌，細菌からなる微生物及び該微生
物の代謝産物等，空調装置本体１の悪臭原因とな
る物質は、噴射された凝縮水Ｗによつてフイン表
面から除去される。このとき前記車外排水路２１
は三方電磁弁２３により解放されていることか
ら、洗浄後の凝縮水Ｗは、エバポレータ１０のフ
イン表面から剥離した悪臭原因となる物質ととも
に、車外排水路２１より排出される。そしてエバ
ポレータ１０の洗浄に伴つて、給水タンク１４内
の水位が下部水位検出スイツチ１０以下となると
（ステツプ），送水ポンプ１５及び超音波発生器
１８は停止され、エアコンスイツチがONである
間、給水タンク内の貯溜水量に応じてステツプ
〜のループが繰り返えされる。該貯溜水量は、
前記表に示したように、エバポレータ入口空気温
度及び湿度，冷房能力，風量によつて求められ、
最も空調装置本体１の悪臭が問題となる夏期に
は、約4000c.c.／hrとなる。したがつて、エバポレ
ータ１０のフイン表面を短時間毎に、頻繁に洗浄
することができ、微生物の繁殖は抑制されるので
ある。
次に空調装置本体１を停止させるべくエアコン
スイツチをOFFにすると超音波発生器１８は
OFFとなり、このとき下部水位検出スイツチ１
４がOFFであれば（ステツプ），給水タンク１
４内の残存水量は少なく、よつてエバポレータ１
０の洗浄を行なうことなく、二方電磁弁１７を開
にして、排水孔１６より給水タンク１４内に残留
している凝縮水Ｗは廃棄される（ステツプ）。
又下部水位検出スイツチ２０がONであつた場合
には、給水タンク１４内に多量の凝縮水Ｗが残留
していることから、既にステツプにおいて殺菌
処理されている凝縮水Ｗを用いてエバポレータ１
０の洗浄を行なうべく、三方弁２３を作動させて
車外排水路２２を開放し、（ステツプ），送水ポ
ンプ１５を稼働させて液噴射ノズル１１より凝縮
水Ｗを噴出させる。そして給水タンク１４内の水
位が低下し、下部水位検出スイツチ２０がOFF
となると（ステツプ），送水ポンプ１６がOFF
となつた後、二方電磁弁１７は開となり、給水タ
ンク１４内に残留している凝縮水Ｗは排水孔１６
より廃棄される。したがつて停車時等、エアコン
スイツチがOFFである場合には、給水タンク１
４内に凝縮水Ｗが残留することはなく、該凝縮水
Ｗが給水タンク１４内で腐敗することによつて生
ずる異臭を未然に防止することができるのであ
る。尚、前述の実施例は殺菌装置として超音波発
振器を用いたが、これ以外の殺菌装置を用いるこ
ともできる。
考案の効果
以上説明したように本考案は、自動車用空調装
置の稼動に伴つてエバポレータの表面に生ずる凝
縮水を給水タンク内に貯溜し、この凝縮水を殺菌
装置により殺菌処理した後エバポレータを指向し
て噴射するようにした。よつて最も悪臭が問題と
なる夏期高時には、充分な量の凝縮水が得られる
ことから、該凝縮水を用いてエバポレータに付着
する有機，無機物質，該物質を栄養源として繁殖
する微生物，及び該微生物の代謝成分を、悪臭発
生の余地を与えることなく頻繁に洗浄，除去する
ことができ、無臭化を図ることができる。しかも
凝縮水は予め、給水タンク内において殺菌され無
菌状態となることから、洗浄時にエバポレータに
付着している微生物を効果的に除去し得るととも
に、使用頻度の低い時期であつても給水タンク内
での微生物の発生は阻止され、常に洗浄効果の高
い無菌水を用いたエバポレータの洗浄を行なうこ
とができる。加えて前記実施例においては、空調
装置本体の停止時に、給水タンク内に残留した凝
縮水を車外に廃棄するようにしたことから、給水
タンク内に残留した凝縮水が腐敗し、新たな悪臭
原因を生じさせることなく実用し得るものであ
る。[Table] During that time, it is determined whether the water level of the condensed water W has reached the lower water level detection switch 20 (ON) or not (step), and the loop from step to is executed until the water level reaches the lower water level detection switch 20. repeat. Then, the water level of the condensed water W reaches the lower water level detection switch 10, and the lower water level detection switch 10
When the ON signal is input to the control device 24, the control device 24 outputs an operation command signal to the ultrasonic generator 18, which is a sterilizer, and the ultrasonic generator 18
~1500KHz ultrasonic waves are oscillated (step).
The ultrasonic generator 18 has a frequency of 200 to 1500 KHz (frequency 20
Ultrasonic waves (up to 150 cycles/sec) have the property of strongly and effectively killing bacteria and spores in a short period of time, and can even kill bacteria existing in water. Therefore, fungi and bacteria that grow on the surface of the evaporator 10, peel off, and float in the condensed water W are killed by the ultrasonic waves, and the condensed water W becomes suitable as sterile cleaning water. . Then, when the water level of the condensed water W reaches the upper water level detection switch 19 (step, the three-way solenoid valve 23 is activated by the output signal of the control device 24, and the water supply tank 1 of the water conduit 21
At the same time, the outside drainage channel 22 is opened, and the water pump 15 is started (step). As a result, the condensed water W stored in the water supply tank 14 is transferred to the pipe 13.
The liquid is fed under pressure to the injection nozzle 11 through the injection port 1.
2... is injected toward the evaporator 10. Therefore, body odor, cosmetics, fragrances, odor particles such as cigarettes, soil component particles, microorganisms consisting of fungi and bacteria that have grown using these as nutritional sources, and metabolites of the microorganisms, which have adhered to the fin surface of the evaporator 10. Substances that cause bad odor in the air conditioner main body 1 are removed from the fin surface by the injected condensed water W. At this time, the vehicle exterior drainage channel 21
Since this is released by the three-way solenoid valve 23, the condensed water W after cleaning is discharged from the vehicle exterior drainage channel 21 together with the odor-causing substances separated from the fin surface of the evaporator 10. When the water level in the water supply tank 14 becomes lower than the lower water level detection switch 10 as the evaporator 10 is cleaned (step), the water pump 15 and the ultrasonic generator 18 are stopped, and the water supply is continued while the air conditioner switch is on. The loop from step to is repeated depending on the amount of water stored in the tank. The amount of stored water is
As shown in the table above, it is determined based on the evaporator inlet air temperature and humidity, cooling capacity, and air volume.
In the summer, when the bad odor from the air conditioner body 1 is most problematic, it is approximately 4000c.c./hr. Therefore, the surface of the fins of the evaporator 10 can be washed frequently for short periods of time, and the growth of microorganisms is suppressed. Next, when the air conditioner switch is turned off to stop the air conditioner body 1, the ultrasonic generator 18
OFF, and at this time the lower water level detection switch 1
If 4 is OFF (step), water tank 1
The amount of water remaining in evaporator 4 is small, so evaporator 1
The condensed water W remaining in the water supply tank 14 is discarded from the drain hole 16 by opening the two-way solenoid valve 17 without carrying out any cleaning (step).
If the lower water level detection switch 20 is ON, a large amount of condensed water W remains in the water supply tank 14, so the evaporator 1 is cleaned using the condensed water W that has already been sterilized in the step.
In order to perform the cleaning, the three-way valve 23 is operated to open the vehicle exterior drainage channel 22 (step), and the water pump 15 is operated to spray condensed water W from the liquid injection nozzle 11. Then, the water level in the water tank 14 decreases, and the lower water level detection switch 20 turns OFF.
When this happens (step), the water pump 16 turns OFF.
After that, the two-way solenoid valve 17 is opened, and the condensed water W remaining in the water tank 14 is drained from the drain hole 16.
more discarded. Therefore, when the air conditioner switch is OFF, such as when the car is stopped, the water tank 1
The condensed water W does not remain in the water supply tank 14, and it is possible to prevent an unpleasant odor caused by the condensed water W rotting in the water supply tank 14. In addition, although the above-mentioned embodiment used an ultrasonic oscillator as a sterilization device, other sterilization devices can also be used. Effects of the Invention As explained above, the present invention stores condensed water generated on the surface of the evaporator during operation of an automobile air conditioner in a water supply tank, sterilizes this condensed water with a sterilizer, and then directs it to the evaporator. Then I made it spray. Therefore, during the high summer months when bad odors are most problematic, a sufficient amount of condensed water can be obtained, and this condensed water can be used to absorb organic and inorganic substances that adhere to the evaporator, microorganisms that propagate using the substances as a nutrient source, and The metabolic components of the microorganisms can be frequently washed and removed without giving room for the generation of bad odors, and odorlessness can be achieved. Moreover, since the condensed water is sterilized in advance in the water supply tank and becomes sterile, microorganisms attached to the evaporator can be effectively removed during cleaning, and even during periods of low usage, the condensed water can be sterilized in the water supply tank. The generation of microorganisms is prevented, and the evaporator can always be cleaned using sterile water, which has a high cleaning effect. In addition, in the above embodiment, when the air conditioner main body is stopped, the condensed water remaining in the water tank is disposed of outside the vehicle, so the condensed water remaining in the water tank decomposes, causing a new odor. It can be put into practical use without causing any problems.
第１図は本考案の一実施例を示す概念図、第
２，３図は同実施例の作動フローチヤートであ
る。
１……空調装置本体、１０……エバポレータ、
１１……液噴射ノズル、１４……給水タンク、１
５……送水ポンプ、１８……殺菌装置（超音波発
生器）、１９……上部水位検出スイツチ（上部水
位検出装置）、２０……下部水位検出スイツチ
（下部水位検出装置）、２１……導水路、２２……
車外排水路、２３……三方電磁弁（弁体）、２４
……制御装置、Ｗ……凝縮水。
FIG. 1 is a conceptual diagram showing an embodiment of the present invention, and FIGS. 2 and 3 are operational flowcharts of the embodiment. 1... air conditioner main body, 10... evaporator,
11... Liquid injection nozzle, 14... Water supply tank, 1
5... Water pump, 18... Sterilizer (ultrasonic generator), 19... Upper water level detection switch (upper water level detection device), 20... Lower water level detection switch (lower water level detection device), 21... Guide Waterway, 22...
External drainage channel, 23...Three-way solenoid valve (valve body), 24
...control device, W...condensed water.
Claims (1)
噴射ノズルを配設するとともに、該液噴射ノズル
を送水ポンプを介して給水タンクに連通し、該給
水タンク内に殺菌装置及び水位検出装置を配設す
る一方、前記エバポレータに付着する凝縮水を前
記給水タンクに導く導水路を設け、該導水路に車
外排水路を分岐形成するとともに、該車外排水路
と導水路とを選択的に開閉する弁体を設け、前記
水位センサの出力信号に基づいて、前記送水ポン
プ、殺菌装置及び弁体を制御する制御装置を設け
たことを特徴とする自動車用空調装置の悪臭防止
装置。 A liquid injection nozzle is arranged to face an evaporator of an automobile air conditioner, the liquid injection nozzle is communicated with a water supply tank via a water supply pump, and a sterilizer and a water level detection device are arranged in the water supply tank. On the other hand, a water conduit is provided to guide the condensed water adhering to the evaporator to the water supply tank, and an external drainage channel is branched from the water conduit, and a valve body is provided to selectively open and close the external drainage channel and the water conduit. 1. A malodor prevention device for an automobile air conditioner, comprising: a control device for controlling the water pump, the sterilizer, and the valve body based on the output signal of the water level sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985178108U JPH0352164Y2 (en) | 1985-11-19 | 1985-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985178108U JPH0352164Y2 (en) | 1985-11-19 | 1985-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6284507U JPS6284507U (en) | 1987-05-29 |
| JPH0352164Y2 true JPH0352164Y2 (en) | 1991-11-12 |
Family
ID=31119937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985178108U Expired JPH0352164Y2 (en) | 1985-11-19 | 1985-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352164Y2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020031581A (en) * | 2000-10-21 | 2002-05-02 | 이계안 | Device for cleaning an evaporator of an air conditioner |
| JP2007312988A (en) * | 2006-05-25 | 2007-12-06 | Sanyo Electric Co Ltd | Air disinfecting device |
| WO2011010382A1 (en) * | 2009-07-23 | 2011-01-27 | 三菱電機株式会社 | Air conditioner |
| JP2011058690A (en) * | 2009-09-09 | 2011-03-24 | Hitachi Appliances Inc | Air conditioner |
| KR102199375B1 (en) * | 2014-09-04 | 2021-01-06 | 엘지전자 주식회사 | Dehumidifier |
| JP6525480B2 (en) * | 2016-02-08 | 2019-06-05 | 株式会社デンソー | Vehicle air conditioner |
| JP6296633B1 (en) * | 2017-04-28 | 2018-03-20 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioner |
-
1985
- 1985-11-19 JP JP1985178108U patent/JPH0352164Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6284507U (en) | 1987-05-29 |
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