JPS6365258A - Efficiency lowering annunciator for absorption refrigerator - Google Patents

Efficiency lowering annunciator for absorption refrigerator

Info

Publication number
JPS6365258A
JPS6365258A JP21003886A JP21003886A JPS6365258A JP S6365258 A JPS6365258 A JP S6365258A JP 21003886 A JP21003886 A JP 21003886A JP 21003886 A JP21003886 A JP 21003886A JP S6365258 A JPS6365258 A JP S6365258A
Authority
JP
Japan
Prior art keywords
operating efficiency
chilled water
flow rate
heat source
measuring
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.)
Granted
Application number
JP21003886A
Other languages
Japanese (ja)
Other versions
JPH071129B2 (en
Inventor
石河 豪夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP21003886A priority Critical patent/JPH071129B2/en
Publication of JPS6365258A publication Critical patent/JPS6365258A/en
Publication of JPH071129B2 publication Critical patent/JPH071129B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Sorption Type Refrigeration Machines (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は吸収冷凍機の運転効率の異常な低下を自動的に
探知して警告を発する報知装置に関する。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a notification device that automatically detects an abnormal decrease in the operating efficiency of an absorption refrigerating machine and issues a warning.

く口)従来の技術 吸収冷凍機の運転効率〔成績係数〕の異常な低下の要因
として、機内に不凝縮ガスが多量に存在する場合、機内
の熱交換器に多量のスケールが付着している場合、冷媒
に多量の吸収剤が混入している場合などが挙げられる。
(Explanation) Conventional technology The reason for the abnormal decrease in the operating efficiency (coefficient of performance) of absorption chillers is that when there is a large amount of non-condensable gas inside the machine, a large amount of scale adheres to the heat exchanger inside the machine. In some cases, a large amount of absorbent is mixed into the refrigerant.

そして、従来の吸収冷凍機においては、機内に不凝縮ガ
スが多量に存在する場合にこれを探知して不凝縮ガスを
機外へ自動排気するもの(例えば特公昭58−4430
7号公報参照)、機内の熱交換器に多量のスケールが付
着している場合にこれを探知して警報を発するもの(例
えば特公昭61−15993号公報参照)、冷媒に多量
の吸収剤が混入している場合にこれを探知して冷媒ブロ
ーを自動的に行うもの(例えば特開昭61−3960号
公報参照)などが知られている。
In conventional absorption refrigerators, when a large amount of non-condensable gas exists inside the machine, it is detected and the non-condensable gas is automatically exhausted to the outside of the machine.
(see Publication No. 7), one that detects a large amount of scale adhering to the heat exchanger inside the machine and issues an alarm (for example, see Japanese Patent Publication No. 15993/1983), There is a known method that detects the presence of refrigerant and automatically blows the refrigerant (see, for example, Japanese Patent Application Laid-open No. 3960/1983).

(ハ)発明が解決しようとする問題点 上記した従来のものは、特定の要因で吸収冷凍機の運転
効率の異常な低下を引起こした際に有効に働く利点を有
するものの、別の要因で運転効率の異常低下を引起こし
た際には全く働かないという問題点をもつ。このため、
これら従来のものをすべて吸収冷凍機に装備する手段も
考えられるが、この手段は、高価で複雑なものとなる上
に、上述の要因以外の原因で運転効率の異常低下を生じ
た場合には何ら役立たないという問題点をもっている。
(C) Problems to be Solved by the Invention Although the above-mentioned conventional methods have the advantage of working effectively when a specific factor causes an abnormal decrease in the operating efficiency of the absorption chiller, other factors may cause the problem. The problem is that it does not work at all when an abnormal drop in operating efficiency occurs. For this reason,
It is conceivable to equip an absorption chiller with all of these conventional devices, but this method would be expensive and complicated, and would be difficult to deal with if an abnormal decrease in operating efficiency occurs due to factors other than those mentioned above. The problem is that it is of no use.

本発明は、このような問題点に鑑み、吸収冷凍機の運転
効率の異常な低下を直接に探知しC[報を発する安価で
簡便な装置の提供を目的としたものである。
In view of these problems, the present invention aims to provide an inexpensive and simple device that directly detects an abnormal decrease in the operating efficiency of an absorption refrigerating machine and issues an alarm.

(ニ)問題点を解決するための手段 本発明は、上記の問題点を解決する手段として、吸収冷
凍機の冷水出力、熱源入力をそれぞれ測る計測器と、熱
源入力に対する冷水出力の比率である成績係数すなわち
運転効率を算出する効率演算器と、運転効率の下限値を
設定する効率設定器と、算出された運転効率とその下限
値との大小を比較判別する判定器と、算出された運転効
率が下限値よりも小さいときの判別信号で警報を発する
報知器とにより、装置を構成したものである。
(d) Means for Solving the Problems The present invention, as means for solving the above problems, provides a measuring device that measures the chilled water output and heat source input of an absorption chiller, and the ratio of the chilled water output to the heat source input. An efficiency calculator that calculates the coefficient of performance or operating efficiency, an efficiency setting device that sets the lower limit of operating efficiency, a judge that compares and determines the magnitude of the calculated operating efficiency and its lower limit, and the calculated operating efficiency. The device is composed of an alarm that issues an alarm with a discrimination signal when the efficiency is smaller than the lower limit value.

(ホ〉作用 本発明の装置においては、計測器と効率演算器とが吸収
冷凍機の刻々の運転効率を直接に計測する働き〔作用〕
をし、この働きと効率設定器および判定器ならびに報知
器の働きにより、どのような要因で吸収冷凍機の運転効
率の異常低下を引起こしてもこれを確実に探知して警告
する機能が発揮される。このため、本発明によれば、運
転効率の異常低下の要因毎に多種類の装置を装備してい
た従来のものにくらべ、簡便かつ安価な装置で吸収冷凍
機の運転管理を行うことが可能となる。
(E) Function: In the device of the present invention, the measuring instrument and the efficiency calculator function to directly measure the moment-by-moment operating efficiency of the absorption chiller.
This function, along with the function of the efficiency setting device, judgment device, and alarm, ensures the ability to detect and warn of any abnormal decrease in absorption chiller operating efficiency caused by any factor. be done. Therefore, according to the present invention, it is possible to manage the operation of an absorption chiller with a simpler and cheaper device compared to the conventional system which is equipped with multiple types of devices for each cause of abnormal decrease in operating efficiency. becomes.

(へ)実施例 第1図は本発明による装置の一実施例を示した概略構成
説明図である。図において、(A)は吸収冷凍機であり
、この吸収冷凍機は高温発生器(1)、低温発生器(2
)、凝縮器<3)、蒸発器(4〉、吸収器(5)、低温
、高温溶液熱交換器(6) 、 (7)、冷媒液用ポン
プ(pi)および溶液用ポンプクPA)を冷媒用管路(
8)、(9)、冷媒液流下用管路(10)、冷媒液還流
用管路(11) 、 (12)、稀溶液用管路(13)
 、 (14)、中間濃度の溶液用管路(15) 、 
(16)、および濃溶液用管路(17) 、 (18)
で接続して冷媒〔水〕と溶液〔臭化リチウム水溶液〕の
循環路を形成している。
(F) Embodiment FIG. 1 is a schematic structural diagram showing an embodiment of the apparatus according to the present invention. In the figure, (A) is an absorption refrigerator, which includes a high temperature generator (1) and a low temperature generator (2).
), condenser <3), evaporator (4>, absorber (5), low temperature, high temperature solution heat exchanger (6), (7), refrigerant liquid pump (pi) and solution pump PA) Conduit (
8), (9), Pipe for refrigerant liquid flow (10), Pipe for refrigerant liquid return (11), (12), Pipe for dilute solution (13)
, (14), intermediate concentration solution conduit (15),
(16), and concentrated solution pipes (17), (18)
are connected to form a circulation path for refrigerant [water] and solution [lithium bromide aqueous solution].

(19)は高温発生器<1)の燃焼加熱室、(20) 
、 (20)・・・は燃焼ガス用通路、(21)は低温
発生器(2)の加熱器、(22)は凝縮器(3)の冷却
器、(23)は蒸発器(4)の熱交換器、(24)は吸
収器(5)の冷却器である。<25)は燃焼加熱室<1
9)に燃料を導く燃料供給路で、これには燃料の流量調
節弁(Vt)と流量検出器(sty)とが備えである。
(19) is the combustion heating chamber of the high temperature generator <1), (20)
, (20)... are combustion gas passages, (21) are the heaters of the low temperature generator (2), (22) are the coolers of the condenser (3), and (23) are the evaporator (4) The heat exchanger (24) is a cooler for the absorber (5). <25) is the combustion heating chamber <1
9), which is equipped with a fuel flow rate control valve (Vt) and a flow rate detector (sty).

なお、図示していないが、高温発生器(1〉の熱源に蒸
気を用いる場合には流量調節弁と流量検出器とが蒸気供
給路に備えられると共にその高温発生器(1)出入口に
それぞれ温度検出器が備えられる。(26) 、 (2
7) 、 (28)は冷却器(24) 、 (22)を
直列に接続した冷却水用管路であり、(29) 、 (
30)は熱交換器(23〉と接続した冷水用管路である
。また、(STw、)は冷水用管路(29)に備えた温
度検出器であり、(STw2) 、 (Stw)は冷水
用管路(30〉に備えた温度検出器、流量検出器である
Although not shown, when steam is used as the heat source of the high temperature generator (1), a flow rate control valve and a flow rate detector are provided in the steam supply path, and temperature control valves and flow rate detectors are provided at the entrance and exit of the high temperature generator (1), respectively. A detector is provided. (26) , (2
7) and (28) are cooling water pipes in which coolers (24) and (22) are connected in series, and (29) and (
30) is a cold water pipe connected to the heat exchanger (23>), (STw,) is a temperature detector provided in the cold water pipe (29), and (STw2) and (Stw) are These are a temperature detector and a flow rate detector provided in the cold water pipe (30).

(B)は、吸収冷凍機(A)の運転効率が異常に低下し
た際、これを運転管理者に知らせる報知装置である。報
知装置(B)は、前記検出器(S1□)、(sTw2)
 、 (SFW)からの信号を受けつつこれら検出値に
より冷水熱量を算出する冷水出力計測器(101)と、
燃料の流量検出器(SFF)からの信号を受けつつこの
検出値により燃料の発熱量換言すれば高温発生器(1)
の加熱量すなわち熱源熱量を算出する熱源入力計測器(
102)と、これら計測器からの信号を受けつつ熱源入
力に対する冷水出力の比率すなわち成績係数を算出する
運転効率演算器(103)と、成績係数の下限値を設定
する運転効率設定器(104)と、この運転効率設定器
にセットされた成績係数の下限値と運転効率演算器(1
03)の算出した成績係数との大小を比較判別する判定
器(105)と、算出した成績係数がその下限値よりも
小さいときの判定器(105)の判別信号により警報を
発する報知器(106)とで構成されている。
(B) is a notification device that notifies an operation manager when the operating efficiency of the absorption chiller (A) has abnormally decreased. The notification device (B) includes the detectors (S1□) and (sTw2).
, (SFW) and a chilled water output measuring device (101) that calculates the chilled water heat amount from these detected values while receiving signals from the SFW;
While receiving the signal from the fuel flow rate detector (SFF), the detected value determines the calorific value of the fuel, in other words, the high temperature generator (1)
A heat source input measuring device (
102), an operating efficiency calculator (103) that receives signals from these measuring instruments and calculates the ratio of chilled water output to heat source input, that is, the coefficient of performance, and an operating efficiency setting device (104) that sets the lower limit value of the coefficient of performance. , the lower limit value of the coefficient of performance set in this operating efficiency setting device and the operating efficiency calculator (1
03), and an alarm (106) that issues an alarm based on the determination signal of the determiner (105) when the calculated coefficient of performance is smaller than its lower limit. ).

なお、第2図に示すように、報知装置(B)は上記構成
要素をこれらのアクセス信号用のBUSで結んだコンピ
ュータシステムとして構成されており、ROM、RAM
、MPU[マイクロプロセッサ−ユニット〕、I/FC
インターフェイス〕などのコンピュータ部品で形成され
ている。例えば、運転効率設定器(104)のRAMや
熱源入力計測器(102)のRAMには、キーボードの
操作により、成績係数の下限値や使用燃料の単位流量当
りの発熱量が、それぞれインプットされ、基準データと
して記憶きれるようになっている。また、冷水出力計測
器(101)のRAMには、検出器(STwl)。
As shown in FIG. 2, the notification device (B) is configured as a computer system in which the above components are connected by a BUS for these access signals, and includes ROM, RAM,
, MPU [microprocessor unit], I/FC
interface] and other computer parts. For example, the lower limit value of the coefficient of performance and the calorific value per unit flow rate of the fuel used are input into the RAM of the operating efficiency setting device (104) and the RAM of the heat source input measuring device (102) by keyboard operations, respectively. It is possible to memorize it as reference data. Further, a detector (STwl) is stored in the RAM of the chilled water output measuring device (101).

(STW2) 、 (Stw)の信号により刻々〔例え
ば−秒毎〕の冷水出入口温度および冷水流量が測定デー
タとしてインプットされて記録されると共にMPUによ
り演算処理された刻々の冷水出入口温度差および冷水出
力〔冷水熱量〕が計測データとして記録されるようにな
っている。同様に、熱源人カフ− 計測器(102)のRAMには、流量検出器(SFF)
の信号により燃料の流量が測定データとしてインプット
されて記憶されると共に、このRAMとMPUとが信号
をアクセスしつつ、RAMにキーボードの操作により記
録させた基準テークである燃料の単位流量当りの発熱量
と燃料の流量とを乗算するMPUの処理で算出された熱
源入力が計測データとして記録されるようになっている
。かつまた、運転効率演算器(103)のRAMには、
MPUで演算処理された刻々の成績係数が計測データと
して記録されるようになっている。なお、これら測定デ
ータや計測データは、キーボードの操作により、例えは
報知器(106)のプリントアウト部やディスプレイ部
などを介して適宜プリントアウトあるいは表示できるよ
うになっている。また、MPUと運転効率設定器(10
4)のRAMとが信号のアクセスをしつつ、このRAM
にキーボードの操作により記憶させた基準データである
成績係数の下限値と計測データである刻々の成績係数と
の大小をMPUの演算処理により比較し、計測データで
ある成績係数がその下限値よりも小さい値であるとき、
報知器(106)が例えば警告レベルを鳴らすと共にそ
の時点の成績係数をプリントアウトもしくは表示するよ
うになっている。すなわら、MPUが第1図に示した判
定器(105)としての機能も兼ねているのである。な
お、図示していないが、報知装置(B)には例えば水晶
発振子を内蔵した計時回路が備えられていることは勿論
である。
The chilled water inlet/outlet temperature and chilled water flow rate are inputted and recorded as measurement data every moment (for example, every -second) by the (STW2) and (Stw) signals, and the momentary chilled water inlet/outlet temperature difference and chilled water output are calculated by the MPU. [Cold water heat value] is now recorded as measurement data. Similarly, the RAM of the heat source cuff meter (102) contains a flow rate detector (SFF).
The fuel flow rate is input and stored as measurement data by the signal, and while this RAM and MPU access the signal, the heat generation per unit flow rate of fuel, which is the standard take recorded in the RAM by keyboard operation, is stored. The heat source input calculated by the MPU process of multiplying the amount by the fuel flow rate is recorded as measurement data. Moreover, in the RAM of the operating efficiency calculator (103),
The moment-by-moment coefficient of performance calculated by the MPU is recorded as measurement data. Note that these measurement data can be printed out or displayed as appropriate by operating the keyboard, for example, via a printout section or a display section of the alarm (106). In addition, MPU and operation efficiency setting device (10
4) While the RAM is accessing signals, this RAM
The lower limit value of the coefficient of performance, which is the standard data stored by operating the keyboard, and the momentary coefficient of performance, which is the measured data, are compared by the calculation processing of the MPU, and the coefficient of performance, which is the measured data, is lower than the lower limit value. When the value is small,
The alarm (106), for example, sounds a warning level and prints out or displays the coefficient of performance at that time. In other words, the MPU also functions as the determiner (105) shown in FIG. Although not shown, it goes without saying that the notification device (B) is equipped with a clock circuit incorporating, for example, a crystal oscillator.

このように、報知装置(B)は、吸収冷凍機の刻々の成
績係数〔運転効率〕を計測しつつこれがその下限設定値
に達したとき、すなわち、異常に低下したとき、警報を
発するのである。このため、運転管理者は、吸収冷凍機
の運転効率の異常低下をいかなる要因で引起こしても運
転を直ちに停止させて燃料の無駄な消費を防ぎ得、運転
効率の異常低下の原因を調査することもできる。かつま
た、従来のもののように運転効率の異常低下の要因毎に
多種類の装置を装備する必要もなく、安価で簡便な装置
で運転管理を行うことができる。
In this way, the alarm device (B) measures the moment-by-moment coefficient of performance (operating efficiency) of the absorption chiller and issues an alarm when this reaches its lower limit set value, that is, when it has fallen abnormally. . Therefore, even if any factor causes an abnormal decrease in the operating efficiency of the absorption chiller, the operation manager can immediately stop the operation to prevent wasteful fuel consumption, and investigate the cause of the abnormal decrease in operating efficiency. You can also do that. Furthermore, there is no need to equip various types of devices for each cause of abnormal decrease in operating efficiency, as is the case with conventional systems, and operation management can be performed using inexpensive and simple devices.

(ト)発明の効果 以−ヒのとおり、本発明は、吸収冷凍機の運転効率の異
常低下をいかなる要因で引起こしても、この異常低下を
安価で簡便な装置で直接かつ自動的に探知して運転管理
者に知らせる効果をもたらし、吸収冷凍機の駆動熱源の
無駄な消費を防ぎ得ると共に運転管理を良好に行ない得
るものとして実用的価値の高いものである。
(G) Effects of the Invention As described in (H) above, the present invention allows an inexpensive and simple device to directly and automatically detect an abnormal decrease in the operating efficiency of an absorption chiller, no matter what causes the abnormal decrease in operating efficiency. This is of high practical value as it brings about the effect of informing the operation manager, prevents wasteful consumption of the driving heat source of the absorption chiller, and enables good operation management.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の装置の一実施例を示した概略構成説明
図であり、第2図は報知装置のコンピュータシステムと
しての一例を示したブロック図である。 (A>・・・吸収冷凍機、 (1)・・・高温発生器、
 (4)・・・蒸発器、 (23)・・・熱交換器、 
(25)・・・燃料供給路、 (SFF)・・・流量検
出器、 (29) 、 (30)・・・冷水用管路、 
(STwI ) 、 (STwt)一温度検出器、 (
Si2)・・・流量検出器、 (B)・・・報知装置、
 (101)・・・冷水出力計測器、 (102)・・
・熱源入力計測器、(103)・・・運転効率演算器、
 (104)・・・運転効率設定器、(105)・・・
判定器、 (106)・・・報知器。
FIG. 1 is a schematic configuration explanatory diagram showing one embodiment of the device of the present invention, and FIG. 2 is a block diagram showing an example of the computer system of the notification device. (A>... absorption refrigerator, (1)... high temperature generator,
(4)...Evaporator, (23)...Heat exchanger,
(25)...Fuel supply line, (SFF)...Flow rate detector, (29), (30)...Cold water pipe,
(STwI), (STwt) one temperature detector, (
Si2)...flow rate detector, (B)...notification device,
(101)...Cold water output measuring device, (102)...
・Heat source input measuring device, (103)...operating efficiency calculator,
(104)...Operating efficiency setting device, (105)...
Judgment device, (106)... Alarm device.

Claims (1)

【特許請求の範囲】[Claims] (1)蒸発器の冷水出入口温度および冷水流量を測定し
つつ冷水熱量を算出して冷水出力を計る出力計測器と、
発生器の熱源流体の出入口温度および流量を測定あるい
は燃料の流量を測定しつつ熱源熱量を算出して熱源入力
を計る入力計測器と、これら計測器からの信号を受けつ
つ冷水出力を熱源入力で除算して運転効率を算出する効
率演算器と、運転効率の下限値を設定する効率設定器と
、この効率設定器の運転効率の下限値と前記効率演算器
の算出した運転効率との大小を比較判別する判定器と、
算出された運転効率の方が運転効率の下限値よりも小で
あるときの判定器の判別信号で警報を発する報知器とに
より、構成されていることを特徴とした吸収冷凍機の効
率低下報知装置。
(1) an output measuring device that measures the chilled water output by calculating the chilled water heat amount while measuring the chilled water inlet/outlet temperature and chilled water flow rate of the evaporator;
An input measuring device measures the heat source input by measuring the inlet/outlet temperature and flow rate of the heat source fluid of the generator, or calculates the heat source heat amount while measuring the fuel flow rate, and the chilled water output is measured by the heat source input while receiving signals from these measuring devices. An efficiency calculator that calculates operating efficiency by dividing; an efficiency setting device that sets a lower limit value of operating efficiency; A determiner for comparing and determining,
and an alarm that issues an alarm based on a determination signal from a determiner when the calculated operating efficiency is smaller than the lower limit value of the operating efficiency. Device.
JP21003886A 1986-09-05 1986-09-05 Absorption refrigerator efficiency decrease notification device Expired - Lifetime JPH071129B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21003886A JPH071129B2 (en) 1986-09-05 1986-09-05 Absorption refrigerator efficiency decrease notification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21003886A JPH071129B2 (en) 1986-09-05 1986-09-05 Absorption refrigerator efficiency decrease notification device

Publications (2)

Publication Number Publication Date
JPS6365258A true JPS6365258A (en) 1988-03-23
JPH071129B2 JPH071129B2 (en) 1995-01-11

Family

ID=16582775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21003886A Expired - Lifetime JPH071129B2 (en) 1986-09-05 1986-09-05 Absorption refrigerator efficiency decrease notification device

Country Status (1)

Country Link
JP (1) JPH071129B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05272849A (en) * 1991-11-15 1993-10-22 Oki Electric Ind Co Ltd Method and device for predicting deterioration of heat exchanger
JP2018169075A (en) * 2017-03-29 2018-11-01 パナソニックIpマネジメント株式会社 Absorption type refrigerating machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05272849A (en) * 1991-11-15 1993-10-22 Oki Electric Ind Co Ltd Method and device for predicting deterioration of heat exchanger
JP2018169075A (en) * 2017-03-29 2018-11-01 パナソニックIpマネジメント株式会社 Absorption type refrigerating machine

Also Published As

Publication number Publication date
JPH071129B2 (en) 1995-01-11

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