JPH031281Y2 - - Google Patents
Info
- Publication number
- JPH031281Y2 JPH031281Y2 JP13608186U JP13608186U JPH031281Y2 JP H031281 Y2 JPH031281 Y2 JP H031281Y2 JP 13608186 U JP13608186 U JP 13608186U JP 13608186 U JP13608186 U JP 13608186U JP H031281 Y2 JPH031281 Y2 JP H031281Y2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- outside air
- air
- contact
- blower
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000004378 air conditioning Methods 0.000 claims 2
- 239000000428 dust Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Air-Conditioning For Vehicles (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は作業用車輌等に設けられる空気調和装
置に関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an air conditioner installed in a work vehicle or the like.
(従来の技術)
従来、フイルタを介して外気を吸入する内気及
び外気吸入系統を設けた車輌用空気調和装置が知
られており、該空気調和装置の駆動回路は第2図
に示すように、送風機10と送風機10の風量調
節用の抵抗11a,11bと、該送風機10の風
量切換スイツチ12とを直列に接続して形成さ
れ、該風量切換スイツチ12は前記抵抗11a及
び11bをバイパスして接続された“強”運転モ
ード用切換接点12aと、該抵抗11bをバイパ
スして接続された“中”運転モード用切換接点1
2bと、該抵抗11a及び11bを介して接続さ
れた“弱”運転モード用切換接点12cとで構成
される複数の切換接点と共通接点12dと切換端
子12eとからなつていた。(Prior Art) Conventionally, a vehicle air conditioner is known which is provided with an inside air and outside air intake system that sucks outside air through a filter, and the drive circuit of the air conditioner is as shown in FIG. It is formed by connecting the blower 10, resistors 11a and 11b for adjusting the air volume of the blower 10, and an air volume switching switch 12 of the blower 10 in series, and the air volume switching switch 12 is connected by bypassing the resistors 11a and 11b. The switching contact 12a for the "strong" operation mode is connected to the switching contact 12a for the "medium" operation mode, which is connected by bypassing the resistor 11b.
2b, a "weak" operation mode switching contact 12c connected via the resistors 11a and 11b, a common contact 12d, and a switching terminal 12e.
(考案が解決しようとする問題点)
前記従来の車輌用空気調和装置においては、外
気吸入系統に設けられたフイルタを清掃のため取
外した状態でも送風機10の駆動回路は作動する
ので、外気吸入系統での“強”運転を行つた場合
には、砂塵等を含む外気が車内に混入し清浄さが
維持できないのみではなく、前記空気調和装置内
部に砂塵等が滞留し該装置に不具合が生じるとい
う問題点があつた。(Problems to be Solved by the Invention) In the conventional vehicle air conditioner, the drive circuit for the blower 10 operates even when the filter installed in the outside air intake system is removed for cleaning. If the vehicle is operated on "strong" mode, not only will outside air containing dust and other substances mix into the interior of the vehicle, making it impossible to maintain cleanliness, but also dust and other particles will accumulate inside the air conditioner, causing problems with the device. There was a problem.
(考案の目的)
本考案は前記従来の問題点に鑑み、フイルタを
取外した時に砂塵等を含む外気が車内に混入しに
くい外気吸入系統の運転が出来る車輌用空気調和
装置を提供することにある。(Purpose of the invention) In view of the above-mentioned conventional problems, the object of the present invention is to provide an air conditioner for a vehicle that can operate an outside air intake system that prevents outside air containing dust etc. from entering the car interior when the filter is removed. .
(問題点を解決するための手段)
本考案は前記目的を達成するため、フイルタを
介して外気を、少なくとも“強”又は“弱”の運
転モードで吸入する内気及び外気吸入系統を設け
た車輌用空気調和装置において、前記フイルタの
着脱を検知する検知手段を設け、該フイルタの取
外し時に前記内気及び外気吸入系統の“強”運転
を阻止する制御手段を備えたことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a vehicle equipped with an inside air and outside air intake system that sucks outside air through a filter in at least a "strong" or "weak" driving mode. The air conditioner is characterized in that it includes a detection means for detecting attachment and detachment of the filter, and a control means for preventing the "strong" operation of the inside air and outside air intake systems when the filter is removed.
(作用)
本考案によれば、フイルタの着脱を検知する検
知手段を設け、該フイルタの取外し時には内気及
び外気吸入系統の“強”運転を阻止する制御手段
を備えているため、清掃等のためフイルタを取外
すと検知手段により検知され、制御手段が該検知
手段よりの信号により前記内気及び外気吸入系統
の“強”運転を阻止するように空気調和装置を制
御する。(Function) According to the present invention, a detection means for detecting the attachment and detachment of the filter is provided, and a control means is provided to prevent the "strong" operation of the inside air and outside air intake systems when the filter is removed, so that cleaning etc. When the filter is removed, it is detected by the detection means, and the control means controls the air conditioner to prevent the "high" operation of the inside air and outside air intake systems based on the signal from the detection means.
(実施例)
第1図及び第3図は本考案の一実施例を示し、
従来例との同一構成部分は同一符号にて表わす。
即ち1は被取付体2に設けられた外気吸入口3に
取付けられたフイルタである。4はフイルタ1の
着脱を検知する検知手段、例えばマイクロスイツ
チで、該フイルタ1が取付けられているときは、
該フイルタ1が該マイクロスイツチのレバー4a
を圧接し、該マイクロスイツチ4の後記接点4b
をオフとし、一方該フイルタ1が取外されている
ときには該フイルタ1が該マイクロスイツチのレ
バー4aから離れるため、該マイクロスイツチの
レバー4aはコイルばね4cのばね付勢力により
後記接点4bをオンとするように設けられてい
る。(Example) Figures 1 and 3 show an example of the present invention,
Components that are the same as those of the conventional example are indicated by the same reference numerals.
That is, 1 is a filter attached to an outside air intake port 3 provided on an attached body 2. 4 is a detection means for detecting attachment/detachment of the filter 1, such as a micro switch; when the filter 1 is attached,
The filter 1 is the lever 4a of the micro switch.
contact 4b of the micro switch 4, which will be described later.
On the other hand, when the filter 1 is removed, the filter 1 separates from the lever 4a of the microswitch, so the lever 4a of the microswitch turns on the contact 4b described later by the spring biasing force of the coil spring 4c. It is set up to do so.
第3図は本考案の制御回路図で、10は送風
機、11a及び11bは該送風機10の風量調節
用の抵抗、12は該送風機10の風量切換スイツ
チで、前記抵抗11a及び11bをバイパスしリ
レー13の常閉の切換接点13aと切換端子13
cとを介して接続された“強”運転モード用切換
接点12aと、該抵抗11bをバイパスして接続
された“中”運転モード用切換接点12bと、該
抵抗11a及び11bを介して接続された“弱”
運転モード用切換接点12cとで構成される切換
接点と共通接点12dと切換端子12eとから形
成されている。14は前記送風機10をオンオフ
するマイクロスイツチで、これらは直列に図示し
ない電源に接続され、前記送風機10の駆動回路
を形成している。 FIG. 3 is a control circuit diagram of the present invention, in which 10 is a blower, 11a and 11b are resistors for adjusting the air volume of the blower 10, and 12 is an air volume changeover switch for the blower 10, which bypasses the resistors 11a and 11b and is a relay. 13 normally closed switching contact 13a and switching terminal 13
The switching contact 12a for the "strong" operation mode is connected via the resistor 11b, and the switching contact 12b for the "medium" operating mode is connected via the resistor 11b. ta “weak”
It is formed from a switching contact including an operation mode switching contact 12c, a common contact 12d, and a switching terminal 12e. Reference numeral 14 designates a micro switch for turning on and off the blower 10, which is connected in series to a power source (not shown) to form a drive circuit for the blower 10.
又リレー13の常開の切換接点13bは抵抗1
5を介して前記“強”切換接点12aに接続され
ている。16aはリレー16の常開のリレー接点
で、該リレー接点16aは前記切換接点13bに
接続され、発光ダイオード17を介して前記共通
接点12dに接続されている。また前記フイルタ
1の着脱を検知するマイクロスイツチ4の接点4
bとリレー13のコイル13dとリレー16のコ
イル16bとは前記送風機10と抵抗11a及び
11bと切換スイツチ12とマイクロスイツチ1
4との直列回路に並列に接続されている。 Also, the normally open switching contact 13b of the relay 13 has a resistor 1.
5 to the "strong" switching contact 12a. Reference numeral 16a denotes a normally open relay contact of the relay 16, which is connected to the switching contact 13b and via a light emitting diode 17 to the common contact 12d. In addition, a contact 4 of a micro switch 4 that detects attachment/detachment of the filter 1
b, the coil 13d of the relay 13, and the coil 16b of the relay 16 are the blower 10, the resistors 11a and 11b, the changeover switch 12, and the microswitch 1.
It is connected in parallel to the series circuit with 4.
本実施例によれば、前記フイルタ1が取付けら
れているときには、該フイルタ1が前記マイクロ
スイツチのレバー4aと圧接し、該レバー4aを
該マイクロスイツチ4から離すので該マイクロス
イツチ4の接点4bはオフとなる。従つて前記送
風機10をオンにすると該送風機10は前記切換
スイツチ12の選択に応じて“強”,“中”,“弱”
のそれぞれの運転モードの内気及び外気吸入系統
の運転ができる。次に前記フイルタ1を取外す
と、該フイルタ1が前記マイクロスイツチのレバ
ー4aから離れるので、該レバー4aのばね付勢
力により該マイクロスイツチ4の接点4bはオン
となる。そのため前記リレーコイル13b及び1
6bにはそれぞれ電流が流れるため励磁され、前
記リレー13の切換端子13cは常開の切換接点
13bと当接し、一方前記リレー16の常開のリ
レー接点16aはオンとなる。従つて前記送風機
10をオンにすると、該送風機10は前記切換ス
イツチ12の選択により“中”,“弱”のそれぞれ
の運転モードの内気及び外気吸入系統の運転はで
きるが、前記切換端子12eが“強”運転モード
の切換接点12aと当接状態となつても、前記抵
抗15を介在しているため“強”運転モードの内
気及び外気吸入系統の運転とはならない。又前記
発光ダイオード17は通電され、該発光ダイオー
ド17はフイルタ1が取外状態であることを表示
する。 According to this embodiment, when the filter 1 is attached, the filter 1 is in pressure contact with the lever 4a of the microswitch, and the lever 4a is separated from the microswitch 4, so that the contact 4b of the microswitch 4 is It turns off. Therefore, when the blower 10 is turned on, the blower 10 is set to "strong", "medium", or "low" depending on the selection of the changeover switch 12.
The inside air and outside air intake systems can be operated in each operation mode. Next, when the filter 1 is removed, the filter 1 is separated from the lever 4a of the microswitch, and the contact 4b of the microswitch 4 is turned on by the spring biasing force of the lever 4a. Therefore, the relay coils 13b and 1
6b are excited because current flows through them, and the switching terminal 13c of the relay 13 comes into contact with the normally open switching contact 13b, while the normally open relay contact 16a of the relay 16 is turned on. Therefore, when the blower 10 is turned on, the blower 10 can operate the inside air and outside air intake systems in the "medium" and "low" operation modes depending on the selection of the changeover switch 12, but when the changeover terminal 12e is Even if it comes into contact with the switching contact 12a in the "strong" operating mode, the internal air and outside air intake systems will not operate in the "strong" operating mode because the resistor 15 is interposed. Also, the light emitting diode 17 is energized, and the light emitting diode 17 indicates that the filter 1 is removed.
又本実施例によれば、フイルタ1を取外した状
態では外気吸入系統の“強”運転ができなくなる
ため、外気に含まれる砂塵等が車室内に流入しに
くくなるとともに、外気吸入系統の“弱”又は
“中”により新鮮な外気を車室内に導く機能は維
持できる。 Furthermore, according to this embodiment, when the filter 1 is removed, the outside air intake system cannot be operated in a "strong" mode, making it difficult for dust, etc. contained in the outside air to flow into the passenger compartment, and at the same time, the "weak" operation of the outside air intake system is disabled. ” or “inside” allows the function of guiding fresh outside air into the vehicle interior to be maintained.
(考案の効果)
以上説明したように、本考案はフイルタを介し
て外気を、少なくとも“強”又は“弱”の運転モ
ードで吸入する内気及び外気吸入系統を設けた車
輌用空気調和装置において、前記フイルタの着脱
を検知する検知手段を設け、該フイルタの取外し
時に前記内気及び外気吸入系統の“強”運転を阻
止する制御手段を備えているため、清掃等のため
フイルタを取外すと、該検知手段が検知し、該制
御手段が該検知手段からの信号により内気及び外
気吸入系統の“強”運転を阻止するように制御す
る。従つて外気に含まれる砂塵等が車室内に流入
しにくくなり、車室内の清浄さが保持できるとと
もに、外気吸入系統の“弱”又は“中”運転モー
ドの運転により新鮮な外気を車室内に導くことが
できるという効果を有する。又外気に含まれる砂
塵等が空気調和装置の内部に滞留しにくくなるた
め、該空気調和装置に故障が生じにくくなるとい
う効果を有する。(Effects of the invention) As explained above, the present invention provides a vehicle air conditioner equipped with an inside air and outside air intake system that sucks outside air through a filter in at least a "strong" or "weak" operation mode. A detection means for detecting attachment and detachment of the filter is provided, and a control means is provided for preventing the "strong" operation of the inside air and outside air intake systems when the filter is removed, so that when the filter is removed for cleaning etc. The control means controls the inside air and outside air intake systems to prevent "strong" operation based on the signal from the sensing means. Therefore, it is difficult for dust, etc. contained in the outside air to flow into the cabin, and the cleanliness of the cabin can be maintained, and fresh outside air can be brought into the cabin by operating the outside air intake system in "weak" or "medium" mode. It has the effect of being able to guide people. Further, since dust and the like contained in the outside air are less likely to stay inside the air conditioner, there is an effect that the air conditioner is less likely to malfunction.
第1図及び第3図は本考案の一実施例を表わ
し、第1図は本考案の車両用空気調和装置のフイ
ルタの着脱状態を示す説明図、第2図は従来例を
示す車両用空気調和装置の制御回路図、第3図は
本考案の車両用空気調和装置の制御回路図であ
る。
図中、1……フイルタ、2……被取付体、3…
…外気吸入口、4……フイルタの着脱検知手段
(マイクロスイツチ)、10……送風機、11a,
11b……送風機風量調節用の抵抗、12……風
量切換スイツチ、13,16……リレー、14…
…マイクロスイツチ、15……抵抗、17……発
光ダイオード。
1 and 3 show an embodiment of the present invention, FIG. 1 is an explanatory diagram showing the attachment/detachment state of the filter of the vehicle air conditioner of the present invention, and FIG. 2 is a conventional example of the vehicle air conditioner. Control circuit diagram of the conditioner. FIG. 3 is a control circuit diagram of the vehicle air conditioner according to the present invention. In the figure, 1...filter, 2...mounted object, 3...
...Outside air intake port, 4...Filter attachment/detachment detection means (micro switch), 10...Blower, 11a,
11b... Resistor for adjusting blower air volume, 12... Air volume selection switch, 13, 16... Relay, 14...
...Micro switch, 15...Resistor, 17...Light emitting diode.
Claims (1)
は“弱”の運転モードで吸入する内気及び外気吸
入系統を設けた車輌用空気調和装置において、前
記フイルタの着脱を検知する検知手段を設け、該
フイルタの取外し時に前記内気及び外気吸入系統
の“強”運転を阻止する制御手段を備えたことを
特徴とする車輌用空気調和措置。 In a vehicle air conditioner provided with an inside air and outside air intake system that sucks outside air through a filter in at least a "strong" or "weak" operation mode, a detection means for detecting attachment/detachment of the filter is provided, An air conditioning device for a vehicle, comprising a control means for preventing the inside air and outside air intake systems from being operated in "high" mode when the air conditioning system is removed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13608186U JPH031281Y2 (en) | 1986-09-04 | 1986-09-04 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13608186U JPH031281Y2 (en) | 1986-09-04 | 1986-09-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6342420U JPS6342420U (en) | 1988-03-19 |
JPH031281Y2 true JPH031281Y2 (en) | 1991-01-16 |
Family
ID=31038869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13608186U Expired JPH031281Y2 (en) | 1986-09-04 | 1986-09-04 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH031281Y2 (en) |
-
1986
- 1986-09-04 JP JP13608186U patent/JPH031281Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6342420U (en) | 1988-03-19 |
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