JPH0480577A - Refrigerant recovering device - Google Patents
Refrigerant recovering deviceInfo
- Publication number
- JPH0480577A JPH0480577A JP19313890A JP19313890A JPH0480577A JP H0480577 A JPH0480577 A JP H0480577A JP 19313890 A JP19313890 A JP 19313890A JP 19313890 A JP19313890 A JP 19313890A JP H0480577 A JPH0480577 A JP H0480577A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- level
- liquid level
- liquefied
- tank
- 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
- 239000003507 refrigerant Substances 0.000 title claims abstract description 86
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 238000011084 recovery Methods 0.000 claims description 56
- 238000000034 method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 3
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
- F25B2345/002—Collecting refrigerant from a cycle
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、冷媒を回収すべき被回収装置から冷媒を回収
するための冷媒回収装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a refrigerant recovery device for recovering refrigerant from a device from which the refrigerant is to be recovered.
（従来の技術）
前記被回収装置は、例えば、冷媒を用いた冷凍回路を有
するエアコン、クーラ、電気冷蔵庫である。一般に、こ
れらの装置では、冷媒としてフロンか用いられる。この
フロンは大気中に放出されると地球を取り巻くオゾン層
に悪影響を与える。(Prior Art) The recovered device is, for example, an air conditioner, a cooler, or an electric refrigerator that has a refrigeration circuit using a refrigerant. Generally, these devices use fluorocarbons as a refrigerant. When this CFC is released into the atmosphere, it has a negative impact on the ozone layer surrounding the earth.
このため、例えばこれらの装置を廃棄したり、修理する
場合に、フロンガスが大気中に放出することを防止する
ため、また、生産量が限られたフロンを再使用するため
、前述の装置からフロンを回収する必要がある。For this reason, for example, when disposing or repairing these devices, fluorocarbons are removed from the aforementioned devices in order to prevent the release of fluorocarbon gas into the atmosphere, and also to reuse fluorocarbons, which are produced in limited quantities. need to be collected.
従来、フロン等の冷媒を回収する冷媒回収装置は、前記
被回収装置に接続され、該冷媒を圧縮し、圧縮された冷
媒とするコンプレッサと、該圧縮された冷媒を凝縮し、
液化された冷媒とするコンデンサと、該液化された冷媒
を回収する回収タンクとを有する。この様な冷媒回収装
置装置では、回収された冷媒の量を検知する必要がある
。例えば、回収タンクが満タンになった時を検知して、
回収タンクを別のタンクに交換しなければならない。Conventionally, a refrigerant recovery device for recovering refrigerant such as fluorocarbons includes a compressor connected to the device to be recovered and compressing the refrigerant to form a compressed refrigerant; and a compressor for condensing the compressed refrigerant.
It has a condenser that uses liquefied refrigerant, and a recovery tank that collects the liquefied refrigerant. In such a refrigerant recovery device, it is necessary to detect the amount of recovered refrigerant. For example, by detecting when the recovery tank is full,
The collection tank must be replaced with another tank.
このため１、従来は、回収タンクを載置した支持板のた
わみをマイクロスイッチにより検知する等、回収タンク
の重量変化から回収冷媒の量を検知していた。For this reason, 1. Conventionally, the amount of recovered refrigerant was detected from changes in the weight of the recovery tank, such as by using a microswitch to detect the deflection of a support plate on which the recovery tank was mounted.
（発明が解決しようとする課題）
従来の冷媒回収装置における回収冷媒量検知方法は、支
持板のたわみをマイクロスイッチによ、り検知している
ので、マイクロスイッチの信頼性にも問題かあることも
あって、回収冷媒量を正確に検知することは困難であっ
た。(Problems to be Solved by the Invention) In the conventional method for detecting the amount of recovered refrigerant in a refrigerant recovery device, the deflection of the support plate is detected by a microswitch, so there is a problem with the reliability of the microswitch. For this reason, it has been difficult to accurately detect the amount of recovered refrigerant.
回収タンクが満タンになったことを正確に検知すること
ができれば、回収タンクを別のタンクに交換する時期を
正確に知ることかでき、これにより、回収タンクの有効
利用となる。If it is possible to accurately detect when the recovery tank is full, it will be possible to accurately know when to replace the recovery tank with another tank, thereby making effective use of the recovery tank.
本発明の課題は、回収冷媒量を正確に検知することがで
きる冷媒回収装置を提供することにある。An object of the present invention is to provide a refrigerant recovery device that can accurately detect the amount of recovered refrigerant.
本発明のもう一つの課題は、回収タンクを別のタンクに
交換する時期を正確に告知することかできる冷媒回収装
置を提供することにある。Another object of the present invention is to provide a refrigerant recovery device that can accurately notify when to replace a recovery tank with another tank.
（課題を解決するための手段）
本発明によれば、冷媒を回収すべき被回収装置に接続さ
れ、該冷媒を圧縮し、圧縮された冷媒とするコンプレッ
サと、該圧縮された冷媒を凝縮し、液化された冷媒とす
るコンデンサと、該液化された冷媒を回収する回収タン
クとを有する冷媒回収装置において、前記回収タンク内
の所定レベル位置に設けられ、前記液化された冷媒の液
面か前記所定レベル位置に達したことを検出し、検出信
号を出力する液面検出手段を有することを特徴とする冷
媒回収装置が得られる。(Means for Solving the Problems) According to the present invention, there is provided a compressor which is connected to a recovery device from which a refrigerant is to be recovered and compresses the refrigerant into a compressed refrigerant; and a compressor which condenses the compressed refrigerant. , a refrigerant recovery device having a condenser that uses liquefied refrigerant and a recovery tank that recovers the liquefied refrigerant, the refrigerant recovery device being provided at a predetermined level position in the recovery tank so that the liquid level of the liquefied refrigerant is lower than the level of the liquefied refrigerant; There is obtained a refrigerant recovery device characterized by having a liquid level detecting means for detecting that the liquid level has reached a predetermined level position and outputting a detection signal.
更に、本発明によれば、前記液面検出手段に接続され、
前記検出信号を、前記コンプレッサの動作を停止させる
ための停止信号に処理する処理手段を、更に有すること
を特徴とする冷媒回収装置が得られる。Furthermore, according to the present invention, connected to the liquid level detection means,
A refrigerant recovery device is obtained, further comprising processing means for processing the detection signal into a stop signal for stopping the operation of the compressor.
更に、本発明によれば、前記検出信号に応答し、前記液
化された冷媒の液面が前記所定レベル位置に達したこと
を可視的又は可聴的に告知する告知手段を、更に有する
ことを特徴とする冷媒回収装置が得られる。Furthermore, according to the present invention, the method further includes notification means that responds to the detection signal and visually or audibly announces that the liquid level of the liquefied refrigerant has reached the predetermined level. A refrigerant recovery device is obtained.
（実施例、） 次に本発明の実施例について図面を参照して説明する。(Example,) Next, embodiments of the present invention will be described with reference to the drawings.
第１図を参照すると、本発明の一実施例による冷媒回収
装置は、例えばフロンガスのような冷媒を回収すべき被
回収装Ｗ（図示せず）に、インレット１１を介して接続
されたコンプレッサ１２を有する。コンプレッサ１２は
、該冷媒を圧縮し、圧縮された冷媒とする。コンデンサ
１３は、該圧縮された冷媒を凝縮し、液化された冷媒と
する。Referring to FIG. 1, a refrigerant recovery device according to an embodiment of the present invention includes a compressor 12 connected via an inlet 11 to a recovery device W (not shown) from which refrigerant such as fluorocarbon gas is to be recovered. has. The compressor 12 compresses the refrigerant into compressed refrigerant. The condenser 13 condenses the compressed refrigerant into liquefied refrigerant.
回収タンク１４は、該液化された冷媒を回収する。The recovery tank 14 recovers the liquefied refrigerant.
液面検出センサ１５は、回収タンク１４内の所定レベル
位置に設けられ、前記液化された冷媒の液面か前記所定
レベル位置に達したことを検出し、検出信号を出力する
。The liquid level detection sensor 15 is provided at a predetermined level position in the recovery tank 14, detects that the liquid level of the liquefied refrigerant has reached the predetermined level position, and outputs a detection signal.
処理回路１６は、液面検出センサ１５に接続され、前記
検出信号を、コンプレッサ１２の動作を停止させるため
の停止信号１７に処理する。The processing circuit 16 is connected to the liquid level detection sensor 15 and processes the detection signal into a stop signal 17 for stopping the operation of the compressor 12.
警報ランプあるいは警報ブザーのような警報器１８は、
前記検出信号に応答し、前記液化された冷媒の液面が前
記所定レベル位置に達したことを可視的又は可聴的に告
知する告知装置として働く。The alarm 18, such as an alarm lamp or an alarm buzzer, is
In response to the detection signal, it functions as a notification device that visually or audibly announces that the liquid level of the liquefied refrigerant has reached the predetermined level.
なお、液面検出センサ１５は、前記液化された冷媒中に
置かれた時、抵抗値が変化する抵抗を有し、該抵抗の前
記抵抗値の変化を検出し、前記検出信号を出力するもの
である。より詳細には、液面検出センサ１５は、微小電
流により自己発熱されるサーミスタを有し、センサ自体
は常に冷媒よりも高い状態にある。液面検出センサ１５
は、液状態の冷媒中に置かれたとき、センサ１５からの
放熱量が増えることにより、センサ１５の抵抗値が増え
る。センサ１５は、この抵抗値の増加を、前記液化され
た冷媒の液面が前記所定レベル位置に達したこととして
、検出し、前記検出信号を出力する。このセンサは、例
えば、実開昭６３−１０３６６号公報に記載されている
。The liquid level detection sensor 15 has a resistor whose resistance value changes when placed in the liquefied refrigerant, detects a change in the resistance value of the resistor, and outputs the detection signal. It is. More specifically, the liquid level detection sensor 15 has a thermistor that self-heats with a small current, and the sensor itself is always in a state higher than the refrigerant. Liquid level detection sensor 15
When placed in a liquid refrigerant, the amount of heat radiated from the sensor 15 increases, thereby increasing the resistance value of the sensor 15. The sensor 15 detects this increase in resistance value as an indication that the liquid level of the liquefied refrigerant has reached the predetermined level, and outputs the detection signal. This sensor is described in, for example, Japanese Utility Model Application Publication No. 10366/1983.
液面検出センサ１５としては、上述以外の液面検出セン
サを用いてもよいことは言うまでもない。It goes without saying that liquid level detection sensors other than those described above may be used as the liquid level detection sensor 15.
この冷媒回収装置の動作を説明する。前記被回収装置か
ら取り出され、インレット１１から本冷媒回収装・置内
に導入された気体状の冷媒は、コンプレッサ１２におい
て圧縮された後、コンデンサ１３により冷却液化され、
回収タンク１４に供給されここに貯蔵される。このため
回収タンク１４内の液体冷媒の液面が徐々に上昇する。The operation of this refrigerant recovery device will be explained. The gaseous refrigerant taken out from the device to be recovered and introduced into the refrigerant recovery device/device from the inlet 11 is compressed in the compressor 12, and then cooled and liquefied by the condenser 13,
It is supplied to the recovery tank 14 and stored there. Therefore, the liquid level of the liquid refrigerant in the recovery tank 14 gradually rises.
冷媒の回収が進み、液面検出センサ１５が固定配置され
た高さに液面の位置が達すると、液面検出センサ１５は
前記検出信号を出力する。この検出信号は、警報器１８
を動作させるとともに、処理回路１６によって、コンプ
レッサ１２の動作を停止させるための停止信号１７に処
理される。この停止信号は、コンレッサ１２の回転を停
止させ、本冷媒回収装置の回収動作を停止させる。When the recovery of the refrigerant progresses and the liquid level reaches the height at which the liquid level detection sensor 15 is fixedly arranged, the liquid level detection sensor 15 outputs the detection signal. This detection signal is transmitted to the alarm 18
The signal is processed by the processing circuit 16 into a stop signal 17 for stopping the operation of the compressor 12. This stop signal stops the rotation of the compressor 12 and stops the recovery operation of the refrigerant recovery device.
液面検出センサ１５を回収タンク１４内の満タンレベル
位置に設けておけば、回収タンクか満タンになったこと
を正確に検知することかできるので、回収タンク１４を
別のタンクに交換する時期を正確に知ることかでき、こ
れにより、回収タンクの有効利用となる。If the liquid level detection sensor 15 is provided at the full level position in the recovery tank 14, it will be possible to accurately detect when the recovery tank is full, so the recovery tank 14 can be replaced with another tank. The timing can be known accurately, which allows for effective use of the recovery tank.
第２図は本発明の他の実施例を示す、回収タンク部の概
略構成図である。FIG. 2 is a schematic configuration diagram of a recovery tank section showing another embodiment of the present invention.
この回収タンク１４には複数個の液面センサ１５−１．
１５−２．１５−３、・・・、及び１５−７が異なる高
さの位置に固定配置されている。これらのセンサの出力
はそれぞれ信号線により表示パネル２１上のＬＥＤのよ
うな表示素子２２−１．２２−２．２２−３、・・・、
及び２２−７に供給されている。This recovery tank 14 includes a plurality of liquid level sensors 15-1.
15-2, 15-3, . . . , and 15-7 are fixedly arranged at different height positions. The outputs of these sensors are transmitted through signal lines to display elements 22-1, 22-2, 22-3, . . . such as LEDs on the display panel 21, respectively.
and 22-7.
二のような構成により、回収タンク１４内で液面が徐々
に上昇していくと、各センサ１５−１．１５−２．１５
−３、・・・、及び１５−７は下方に位置するセンサか
ら順次検出信号を出力して表示素子を点灯させる。この
装置によれば、タンク内の回収液体冷媒の量を時々刻々
と知ることができる。With the configuration shown in 2, when the liquid level gradually rises in the recovery tank 14, each sensor 15-1.15-2.15
-3, . . . , and 15-7 sequentially output detection signals from the sensors located below to light up the display element. According to this device, the amount of recovered liquid refrigerant in the tank can be known from moment to moment.
（発明の効果）
以上説明したように本発明の冷媒回収装置によれば、液
面検出手段により、回収タンク内の液化された冷媒の液
面を検出するので、従来の回収タンクを載置した支持板
のたわみをマイクロスイッチにより検知する等、回収タ
ンクの重量変化から回収冷媒の量を検知する方法よりも
、回収冷媒量を正確に検知することができる。(Effects of the Invention) As explained above, according to the refrigerant recovery apparatus of the present invention, the liquid level of the liquefied refrigerant in the recovery tank is detected by the liquid level detection means, so it is possible to detect the liquid level of the liquefied refrigerant in the recovery tank. The amount of recovered refrigerant can be detected more accurately than methods that detect the amount of recovered refrigerant from changes in the weight of the recovery tank, such as by detecting deflection of the support plate using a microswitch.
更に、本発明によれば、回収タンクが満タンになったこ
とを正確に検知することができるので、回収タンクを別
のタンクに交換する時期を正確に知ることができ、これ
により、回収タンクの有効利用となる。Furthermore, according to the present invention, it is possible to accurately detect when the recovery tank is full, so it is possible to accurately know when to replace the recovery tank with another tank. This will be an effective use of.
第１図は本発明の一実施例による冷媒回収装置の構成を
示す概略構成図、第２図は本発明の他の実施例を示す、
回収タンク部の概略構成図である。
１１はインレット、１２はコンプレッサ、′１３はコン
デンサ、１４は回収タンク、１５．１５−１〜１５−７
は液面検出センサ、１６は処理回路、１７は停止信号、
１８は警報器、２１は表示パネル、２２−１〜２２−７
は表示素子。FIG. 1 is a schematic configuration diagram showing the configuration of a refrigerant recovery device according to one embodiment of the present invention, and FIG. 2 shows another embodiment of the present invention.
FIG. 2 is a schematic configuration diagram of a recovery tank section. 11 is an inlet, 12 is a compressor, '13 is a condenser, 14 is a recovery tank, 15.15-1 to 15-7
is a liquid level detection sensor, 16 is a processing circuit, 17 is a stop signal,
18 is an alarm device, 21 is a display panel, 22-1 to 22-7
is a display element.
Claims (3)
圧縮し、圧縮された冷媒とするコンプレッサと、該圧縮
された冷媒を凝縮し、液化された冷媒とするコンデンサ
と、該液化された冷媒を回収する回収タンクとを有する
冷媒回収装置において、 前記回収タンク内の所定レベル位置に設けられ、前記液
化された冷媒の液面が前記所定レベル位置に達したこと
を検出し、検出信号を出力する液面検出手段を有するこ
とを特徴とする冷媒回収装置。1. A compressor that is connected to a device to be recovered to collect refrigerant and compresses the refrigerant into a compressed refrigerant, a condenser that condenses the compressed refrigerant and turns it into a liquefied refrigerant, and the liquefied refrigerant. In a refrigerant recovery device having a recovery tank for recovering refrigerant, the refrigerant recovery device is provided at a predetermined level position in the recovery tank, detects when the liquid level of the liquefied refrigerant reaches the predetermined level position, and outputs a detection signal. A refrigerant recovery device characterized by having a liquid level detection means.
記コンプレッサの動作を停止させるための停止信号に処
理する処理手段を、更に有することを特徴とする請求項
１に記載の冷媒回収装置。2. The refrigerant recovery apparatus according to claim 1, further comprising processing means connected to the liquid level detection means and processing the detection signal into a stop signal for stopping the operation of the compressor.
が前記所定レベル位置に達したことを可視的又は可聴的
に告知する告知手段を、更に有することを特徴とする請
求項１又は２に記載の冷媒回収装置。3. 3. The refrigerant according to claim 1, further comprising a notification means that responds to the detection signal to visually or audibly notify that the liquid level of the liquefied refrigerant has reached the predetermined level. The refrigerant recovery device described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19313890A JPH0480577A (en) | 1990-07-23 | 1990-07-23 | Refrigerant recovering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19313890A JPH0480577A (en) | 1990-07-23 | 1990-07-23 | Refrigerant recovering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0480577A true JPH0480577A (en) | 1992-03-13 |
Family
ID=16302914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19313890A Pending JPH0480577A (en) | 1990-07-23 | 1990-07-23 | Refrigerant recovering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0480577A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2785041A1 (en) * | 1998-10-09 | 2000-04-28 | Sanden Corp | AIR CONDITON WITH IMPROVED REFRIGERANT SUBCOOLING CONTROL |
| JP2011102652A (en) * | 2009-11-10 | 2011-05-26 | Mitsubishi Electric Corp | Refrigerant condition determining device, refrigerant condition determining system, and method of detecting refrigerant liquid-level position |
-
1990
- 1990-07-23 JP JP19313890A patent/JPH0480577A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2785041A1 (en) * | 1998-10-09 | 2000-04-28 | Sanden Corp | AIR CONDITON WITH IMPROVED REFRIGERANT SUBCOOLING CONTROL |
| JP2011102652A (en) * | 2009-11-10 | 2011-05-26 | Mitsubishi Electric Corp | Refrigerant condition determining device, refrigerant condition determining system, and method of detecting refrigerant liquid-level position |
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