JPH03164626A - Air-conditioner - Google Patents
Air-conditionerInfo
- Publication number
- JPH03164626A JPH03164626A JP1304276A JP30427689A JPH03164626A JP H03164626 A JPH03164626 A JP H03164626A JP 1304276 A JP1304276 A JP 1304276A JP 30427689 A JP30427689 A JP 30427689A JP H03164626 A JPH03164626 A JP H03164626A
- Authority
- JP
- Japan
- Prior art keywords
- air filter
- air
- life
- pressure loss
- detection sensor
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims description 6
- 230000003068 static effect Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、空気調和機のエアフィルタの寿命を簡単か
つ正確に判定できるようにした空気調和機に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner that allows the lifespan of an air filter of the air conditioner to be easily and accurately determined.
第３図は従来の空気調和機の構成図である。この第３図
において、１は熱媒体と被熱交換空気とを熱交換させる
熱交換器、２は熱交換器１に被熱交換空気を供給する送
風機で、ファン２ｃ、ファンモータ２ｄから構成される
。FIG. 3 is a block diagram of a conventional air conditioner. In FIG. 3, 1 is a heat exchanger for exchanging heat between the heat medium and the air to be heat exchanged, and 2 is a blower for supplying the air to be heat exchanged to the heat exchanger 1, which is composed of a fan 2c and a fan motor 2d. Ru.
また、３は空気吸い込み口部４および空気吹き出し口部
５を有し、前記熱交換器１を通る風路を構成する外箱、
６は前記空気吸い込み口部４の風路下流側に取り付けら
れた空気中の塵埃を除去するエアフィルタであり、７は
その両端が前記エアフィルタ６の前後に位置する透明な
０字管であり、この０字管７の管内には所定量の液体が
充填されている。Further, 3 is an outer box having an air inlet portion 4 and an air outlet portion 5 and forming an air path passing through the heat exchanger 1;
Reference numeral 6 denotes an air filter for removing dust in the air, which is attached to the downstream side of the air path of the air suction port 4, and reference numeral 7 denotes a transparent zero-shaped tube whose both ends are located before and after the air filter 6. The inside of this zero-shaped tube 7 is filled with a predetermined amount of liquid.
さらに、０字管７の両端の管面には、第４図（６）に示
すように管内の液面高さを示すための目盛りがつけられ
ており、両端における静圧の差を液面高さの差として計
測できる。Furthermore, the tube surfaces at both ends of the 0-shaped tube 7 are equipped with scales to indicate the liquid level height inside the tube, as shown in Fig. 4 (6). It can be measured as a difference in height.
空気調和機が停止時、第４図（ロ）に示すように、前記
０字管７の両端の液面高さの差は０であるが、運転を開
始すると第４図（Ｃ）に示すように、エアフィルタ６の
圧力損失により、エアフィルタ６の下流側の静圧が低下
するため、下流側の液面高さは上流側の液面高さに比べ
て低くなる。When the air conditioner is stopped, as shown in Figure 4 (B), the difference in liquid level between both ends of the 0-shaped tube 7 is 0, but when the air conditioner starts operating, it is as shown in Figure 4 (C). Since the static pressure on the downstream side of the air filter 6 decreases due to the pressure loss of the air filter 6, the liquid level height on the downstream side becomes lower than the liquid level height on the upstream side.
さらに、長時間運転を続けると、第４図（６）に示すよ
うに、エアフィルタ６は空気中の塵埃を捕集し、保持す
るために圧力損失はさらに増加し、液面高さの差も大き
くなる。Furthermore, if the operation continues for a long time, as shown in FIG. 4 (6), the air filter 6 collects and retains dust in the air, so the pressure loss further increases, and the difference in liquid level height increases. also becomes larger.
ここで、エアフィルタ６の塵埃捕集・保持による寿命と
して適当な圧力損失増加分を考えると、このときの０字
管７の両端の液面高さの差がエアフィルタ６の寿命を判
定する目安となる。従来は、以上の方法により、エアフ
ィルタ６の寿命を判定していた。Here, considering the appropriate increase in pressure loss as the lifespan due to dust collection and retention of the air filter 6, the difference in the liquid level height at both ends of the 0-shaped tube 7 at this time determines the lifespan of the air filter 6. This is a guideline. Conventionally, the lifespan of the air filter 6 has been determined by the method described above.
〔発明が解決しようとする課題〕
従来の空気調和機のエアフィルタ寿命の判定は以上のよ
うに行われていたので、空気調和機運転時、エアフィル
タ６の上流側の０字管７の管端部に空気中の塵埃が付着
し、管孔を閉塞して、正確な圧力損失値が計測できず、
寿命の判定を困難にしていた。[Problems to be Solved by the Invention] Since the air filter life of conventional air conditioners has been determined as described above, when the air conditioner is operating, the zero-shaped pipe 7 on the upstream side of the air filter 6 Dust in the air adheres to the end and blocks the pipe hole, making it impossible to measure accurate pressure loss values.
This made it difficult to judge the lifespan.
この発明は、上記のような問題点を解消するためになさ
れたもので、簡単な方法で正確にエアフィルタの寿命を
判定できる空気調和機を得ることを目的とする。This invention was made to solve the above-mentioned problems, and it is an object of the present invention to provide an air conditioner that can accurately determine the lifespan of an air filter using a simple method.
この発明に係る空気調和機は、エアフィルタの圧力損失
の変化に応じて変動するファンモータの回転数を検知す
る回転数検知センサと、この回転数検知センサの出力か
らエアフィルタの圧力損失を求めてエアフィルタの寿命
判定を行うエアフィルタ寿命判定装置とを設けたもので
ある。The air conditioner according to the present invention includes a rotation speed detection sensor that detects the rotation speed of a fan motor that changes according to changes in air filter pressure loss, and a rotation speed detection sensor that determines the air filter pressure loss from the output of this rotation speed detection sensor. and an air filter life determination device for determining the life of the air filter.
この発明における回転数検知センサはエアフィルタの圧
力損失の変化に応じて変動するファンモータの回転数を
検知し、その回転数検知センサの出力からエアフィルタ
寿命判定装置によりエアフィルタの圧力損失を求めるこ
とにより、エアフィルタ寿命を判定する。The rotation speed detection sensor in this invention detects the rotation speed of the fan motor, which changes according to changes in the pressure loss of the air filter, and the air filter life determination device determines the pressure loss of the air filter from the output of the rotation speed detection sensor. This determines the air filter lifespan.
以下、この発明の空気調和機の実施例を図に基づいて説
明する。第１図はその一実施例の構成図である。Hereinafter, embodiments of the air conditioner of the present invention will be described based on the drawings. FIG. 1 is a configuration diagram of one embodiment.
この第１図において、２は熱交換器ｌに被熱交換空気を
供給する回転数検知機構を持つ送風機で、回転数検知セ
ンサ２ａ、エアフィルタ寿命判定装置２ｂ、ファン２ｃ
、ファンモータ２ｄから構成される。In FIG. 1, reference numeral 2 denotes a blower having a rotation speed detection mechanism that supplies air to be heat exchanged to the heat exchanger l, including a rotation speed detection sensor 2a, an air filter life determination device 2b, and a fan 2c.
, and a fan motor 2d.
エアフィルタ寿命判定装置２ｂには、第２図伽）に示す
ように、送風機２の静圧−風量特性、第２図（ａ）の回
転数−風量特性がインプットされており、以下のように
動作する。The static pressure-airflow characteristics of the blower 2 and the rotational speed-airflow characteristics shown in FIG. 2(a) are input to the air filter life determination device 2b, as shown in FIG. Operate.
第２図（ａ）は縦軸が回転数、横軸が風量を表すＮ−Ｑ
特性ｅを示している。第２図（ｂ）は縦軸が静圧、横軸
が風量を表し、送風機２の静圧と風量の関係を示すＰ−
Ｑ特性ａｌｌ内圧損特性すが示されている。In Figure 2 (a), the vertical axis represents the number of revolutions and the horizontal axis represents the air volume N-Q
Characteristic e is shown. In Fig. 2(b), the vertical axis represents static pressure and the horizontal axis represents air volume.
The Q characteristics and all internal pressure loss characteristics are shown.
このＰ−Ｑ特性ａと機内圧損特性すの交点が空気調和機
の運転ポイントである作動点Ｃであり、この作動点Ｃか
ら横軸に降ろした垂線の交点が風量Ｑとなり、縦軸に降
ろした垂線の交点が機内圧力損失Ｐとなる。The intersection of this P-Q characteristic a and the in-machine pressure loss characteristic is the operating point C, which is the operating point of the air conditioner, and the intersection of the perpendicular line drawn from this operating point C to the horizontal axis is the air volume Q, The intersection of the perpendicular lines is the in-machine pressure loss P.
ここで、空気調和機の初期運転時、すなわちエアフィル
タ６が新品のときの作動点をＣとすると、回転数検知セ
ンサ２ａにより回転数Ｎが検知されていることから、Ｐ
−Ｑ特性ａ、Ｎ−Ｑ特性ｅより風量はＱ、機内圧力損失
はＰとなる。Here, if the operating point at the time of initial operation of the air conditioner, that is, when the air filter 6 is new, is C, then since the rotation speed N is detected by the rotation speed detection sensor 2a, P
From the -Q characteristic a and the N-Q characteristic e, the air volume is Q and the in-machine pressure loss is P.
次に圧力損失がｄＰだけ増加したときをエアフィルタ６
の寿命とすると、長時間運転後には、エアフィルタ６は
空気中の塵埃を捕集し保持するために、その圧力損失は
増加し、機内圧力損失は図中曲線ｂ１に変化する。Next, when the pressure loss increases by dP, air filter 6
Assuming that the lifespan is , after a long period of operation, the air filter 6 collects and retains dust in the air, so its pressure loss increases, and the in-machine pressure loss changes to curve b1 in the figure.
このため作動点はＣ９に移動し、回転数検知センサ２ａ
により回転数Ｎ、が検知されていることから、Ｐ−Ｑ特
性ａ、Ｎ−Ｑ特性ｅより風量はＱい機内圧力損失はＰ＋
ｄ Ｐとなる。Therefore, the operating point moves to C9, and the rotation speed detection sensor 2a
Since the rotation speed N is detected by
dP becomes.
これより、圧力損失増加分ｄＰが検知され、容易にエア
フィルタ寿命を判定できる。From this, the pressure loss increase dP can be detected, and the life of the air filter can be easily determined.
（発明の効果〕
以上のように、この発明によれば、エアフィルタの圧力
損失の変化に応じて変動するファンモータの回転数を検
知し、エアフィルタの圧力損失を求めるように構成した
ので、容易かつ正確にエアフィルタ寿命を判定できる効
果がある。(Effects of the Invention) As described above, according to the present invention, the rotation speed of the fan motor, which changes according to the change in the pressure loss of the air filter, is detected and the pressure loss of the air filter is determined. This has the effect of allowing the air filter life to be determined easily and accurately.
第１図はこの発明の一実施例による空気調和機の構成図
、第２図は、同上実施例の動作説明用図、第３図は従来
の空気調和機の構成図、第４図（ａ）ないし第４図（ｄ
）は、従来の空気調和機のＵ字管内の液体の液面の動き
の説明用図である。
１・・・熱交換器、２・・・送風機、２ａ・・・回転数
検知センサ、２ｂ・・・エアフィルタ寿命判定装置、２
ｃ・・・ファン、２ｄ・・・ファンモータ、３・・・外
箱、４・・・空気吸い込み口部、５・・・空気吹き出し
口部、６・・・エアフィルタ。
なお、図中同一符号は同一 または相当部分を示す。FIG. 1 is a block diagram of an air conditioner according to an embodiment of the present invention, FIG. 2 is a diagram for explaining the operation of the same embodiment, FIG. 3 is a block diagram of a conventional air conditioner, and FIG. ) to Figure 4 (d
) is a diagram for explaining the movement of the liquid level in the U-shaped pipe of a conventional air conditioner. DESCRIPTION OF SYMBOLS 1...Heat exchanger, 2...Blower, 2a...Rotation speed detection sensor, 2b...Air filter life determination device, 2
c...Fan, 2d...Fan motor, 3...Outer box, 4...Air suction port, 5...Air outlet, 6...Air filter. Note that the same symbols in the figures indicate the same or equivalent parts.
Claims (1)
成する外箱内に配設された熱交換機と、前記空気吸い込
み口部の風路下流側に取り付けられ塵埃を除去するエア
フィルタと、前記熱交換器に被熱交換空気を供給するた
めにファンとファンモータおよび前記エアフィルタの目
づまりにより生ずる機内圧力損失の増加にともなう前記
ファンモータの回転数の変化を検知する回転数検知セン
サと前記回転数検知センサの出力により前記目づまりに
よる前記エアフィルタの寿命を判定するエアフィルタ寿
命判定装置とから構成された送風機とを備えた空気調和
機。a heat exchanger disposed in an outer box constituting an air path from the air inlet to the air outlet; an air filter attached to the downstream side of the air path of the air inlet to remove dust; A rotation speed detection sensor for detecting a change in the rotation speed of the fan motor due to an increase in internal pressure loss caused by clogging of the fan and the fan motor and the air filter for supplying air to be heat exchanged to the heat exchanger; An air conditioner comprising an air filter life determination device that determines the life of the air filter due to clogging based on the output of a rotation speed detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1304276A JPH03164626A (en) | 1989-11-21 | 1989-11-21 | Air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1304276A JPH03164626A (en) | 1989-11-21 | 1989-11-21 | Air-conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03164626A true JPH03164626A (en) | 1991-07-16 |
Family
ID=17931095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1304276A Pending JPH03164626A (en) | 1989-11-21 | 1989-11-21 | Air-conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03164626A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072201A (en) * | 2016-11-11 | 2018-05-25 | 开利公司 | Heat pump system and its startup control method |
-
1989
- 1989-11-21 JP JP1304276A patent/JPH03164626A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072201A (en) * | 2016-11-11 | 2018-05-25 | 开利公司 | Heat pump system and its startup control method |
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