JPH0674931B2 - Absorption cooling / heating machine cooling water flow rate diagnostic device - Google Patents
Absorption cooling / heating machine cooling water flow rate diagnostic deviceInfo
- Publication number
- JPH0674931B2 JPH0674931B2 JP18500087A JP18500087A JPH0674931B2 JP H0674931 B2 JPH0674931 B2 JP H0674931B2 JP 18500087 A JP18500087 A JP 18500087A JP 18500087 A JP18500087 A JP 18500087A JP H0674931 B2 JPH0674931 B2 JP H0674931B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- temperature
- judgment
- flow rate
- value
- 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 - Fee Related
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は吸収冷温水機の作動状態の診断装置に係り、特
に冷却水流量の多少を冷温水機の各部の温度を計測する
ことによって診断する吸収冷温水機の冷却水流量診断装
置に関する。Description: TECHNICAL FIELD The present invention relates to a diagnostic device for an operating state of an absorption chiller-heater, and more particularly to a diagnostic device for measuring the flow rate of cooling water by measuring the temperature of each part of the chiller-heater. The present invention relates to a cooling water flow rate diagnostic device for an absorption chiller-heater.
従来知られている吸収冷温水機の冷却水流量の多少を診
断する方法としては、冷却水管の入口側もしくは出口側
に設けられた流量計によって直接流量を測定する方法
や、冷却水管の入口と出口の間に生ずる差圧を測定して
流量を算出する方法がある。As a method of diagnosing the cooling water flow rate of a conventionally known absorption chiller-heater, a method of directly measuring the flow rate with a flow meter provided at the inlet side or the outlet side of the cooling water pipe, or the inlet of the cooling water pipe There is a method of calculating the flow rate by measuring the differential pressure generated between the outlets.
しかしながら流量計を用いる方法は、冷却水管に流量計
が設置されていない場合が多く、又流量計が設置されて
いる場合もその下流もしくは上流に複数台の吸収式温水
機の冷却水管が接続されている場合が多くて、個々の吸
収冷温水機の冷却水量を流量計によって測定することは
困難であった。又、超音波流量計を用いる方法もある
が、装置が高価で汎用性がなく、一般的ではない。However, in the method using a flow meter, in many cases there is no flow meter installed in the cooling water pipe, and even if a flow meter is installed, the cooling water pipes of multiple absorption water heaters are connected downstream or upstream of it. In many cases, it was difficult to measure the cooling water volume of each absorption chiller-heater with a flow meter. There is also a method of using an ultrasonic flow meter, but the device is expensive and not versatile, which is not common.
又、差圧による方法は、例えば第４図に示すような冷温
水機の冷却水流量（ｑ）を診断するには、冷却水の入口
管17と出口管19の圧力を測定し、得られた入口管17と出
口管19間の圧力損失dPより第５図に示すような個々の冷
温水機に固有な「冷却水圧力損失特性線図」を用いて図
上で求める方法であり、精度の高い圧力計もしくは差圧
計もしくはマノメータを要し、線図上で作図により求め
るため誤差が大きく、冷却水管内面の汚れ状態に影響さ
れ更に誤差を生ずるという欠点がある。第５図中のA,B
は、吸収冷温水機の機種を示す。In order to diagnose the cooling water flow rate (q) of the chiller / heater as shown in FIG. 4, the method using the differential pressure is obtained by measuring the pressures of the cooling water inlet pipe 17 and the outlet pipe 19. It is a method to obtain on the figure from the pressure loss d P between the inlet pipe 17 and the outlet pipe 19 using the “cooling water pressure loss characteristic diagram” peculiar to each chiller-heater as shown in FIG. It requires a highly accurate pressure gauge, differential pressure gauge, or manometer, and there is a drawback that the error is large because it is obtained by drawing on the diagram and the error is further influenced by the contamination state of the inner surface of the cooling water pipe. A and B in Fig. 5
Indicates the model of the absorption chiller / heater.
本発明の課題は、吸収冷温水機の冷却水流量が多いか、
少ないか、適切かの診断を、流量計や圧力計を用いるこ
となく、精度よく行うことのできる冷却水流量診断装置
を提供するにある。The subject of the present invention is whether the cooling water flow rate of the absorption chiller-heater is large,
It is an object of the present invention to provide a cooling water flow rate diagnostic device capable of accurately diagnosing a small amount or an appropriate amount without using a flow meter or a pressure gauge.
上記の課題は、前記吸収冷温水機の、冷温水出口温度、
冷却水入口温度、冷却水出口温度および希溶液吸収器出
口温度を検出し温度信号として発信する温度検出器と、
前記温度信号に基づいて判断要素毎の判断基準値を算出
する判断基準値演算器と、前記温度信号に基づいて判断
要素毎の現状値を算出する現状値演算器と、判断要素毎
に前記判断基準値と前記現状値が入力されて両者を比較
しいずれが大きいかを判定する比較演算器と、前記比較
の結果に従って冷却水流量過多、冷却水流量適切、冷却
水流量不足をそれぞれ示す判定枠にあらかじめ判断要素
ごとに定められた重みを加算する重み演算器と、前記重
み値に基づいて診断結果を算出する重み値集計値比較演
算器と、前記診断結果を表示する表示器とを備えてな
り、前記判断要素は冷却水出入口温度差、希溶液吸収器
出口温度と冷却水入口温度との温度差、希溶液吸収器出
口温度と冷却水出口温度との温度差である吸収冷温水機
の冷却水流量診断装置により達成される。The above-mentioned problem, the absorption cold water heater, hot and cold water outlet temperature,
A temperature detector that detects the cooling water inlet temperature, the cooling water outlet temperature, and the diluted solution absorber outlet temperature, and transmits as a temperature signal,
A judgment reference value calculator that calculates a judgment reference value for each judgment element based on the temperature signal, a current value calculator that calculates a current value for each judgment element based on the temperature signal, and the judgment for each judgment element A comparison calculator for determining which is larger by inputting the reference value and the current value and comparing the two, and a determination frame indicating excessive cooling water flow rate, appropriate cooling water flow rate, or insufficient cooling water flow rate according to the result of the comparison. A weight calculator for adding weights determined in advance for each judgment element, a weight value aggregate value comparison calculator for calculating a diagnosis result based on the weight value, and a display for displaying the diagnosis result. The determination element is a cooling water inlet / outlet temperature difference, a temperature difference between the dilute solution absorber outlet temperature and the cooling water inlet temperature, and a temperature difference between the dilute solution absorber outlet temperature and the cooling water outlet temperature. Cooling water flow diagnostic device It is achieved by.
〔作用〕 吸収冷温水機の冷却水出入口温度差と冷却水流量との
間、希溶液吸収器出口温度と冷却水入口温度の温度差と
冷却水流量との間、希溶液吸収器出口温度と冷却水出口
温度の温度差と冷却水流量との間には、それぞれ強い相
関関係があり、この三項目を判断要素とする。[Operation] Between the cooling water inlet / outlet temperature difference of the absorption chiller / heater and the cooling water flow rate, between the temperature difference between the dilute solution absorber outlet temperature and the cooling water inlet temperature and the cooling water flow rate, and the dilute solution absorber outlet temperature There is a strong correlation between the cooling water outlet temperature difference and the cooling water flow rate, and these three items are used as judgment factors.
温度検出器で、冷却水入口温度、冷却水出口温度、冷温
水出口温度、および希溶液吸収器出口温度が検出される
ので、冷却水入口温度と冷温水出口温度とあらかじめ定
められた計算式とから、上記三つの判断要素につき流量
判断の判断基準値とする上記各温度差数値が判断基準値
演算器により算出され、冷却水出口温度、冷却水入口温
度および希溶液吸収器出口温度から前記判断要素の現状
の各温度差が、現状値演算器により算出される。The temperature detector detects the cooling water inlet temperature, the cooling water outlet temperature, the cold / hot water outlet temperature, and the diluted solution absorber outlet temperature, so the cooling water inlet temperature, the cold / hot water outlet temperature, and the predetermined calculation formula From the above, the respective temperature difference values, which are the judgment reference values for the flow rate judgment for the above three judgment elements, are calculated by the judgment reference value calculator, and the judgment is made from the cooling water outlet temperature, the cooling water inlet temperature and the diluted solution absorber outlet temperature. Each current temperature difference of the element is calculated by the current value calculator.
算出された前記判断基準値としての温度差と、現状の温
度差が比較演算器で比較されて前記判断要素ごとに流量
が多い、少ない、適切のいずれであるかの判定が行わ
れ、この判定結果に基いて重み演算器により前記判断要
素ごとに定められている重み値が、流量が多い、適切、
少ないの三つの判定枠に加算される。前記三つの判定枠
に加算された重み値は、重み値集計値比較演算器によっ
て各判定枠ごとに集計され、いずれの判定枠の重み値集
計値が最も大きいかが判定され、最も大きい重み値集計
値をもつ判定枠が、診断結果として表示器に表示され
る。The calculated temperature difference as the judgment reference value and the current temperature difference are compared by a comparison calculator to judge whether the flow rate is large, small, or appropriate for each judgment element. Based on the result, the weight value determined for each of the judgment elements by the weight calculator has a large flow rate, is appropriate,
It is added to the three judgment frames of the less. The weight values added to the three judgment frames are totaled for each judgment frame by the weight value total value comparison calculator, and it is determined which of the judgment frames has the largest weight value total value, and the largest weight value total is calculated. A judgment frame having a value is displayed on the display as a diagnosis result.
第１図、第２図および第３図により本発明の実施例を説
明する。An embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3.
第１図は冷却水流量診断装置の構成の概要図であり、本
実施例の診断装置は移動可能な本体31と、該本体31に設
けられた接続子31a,31b,31c,31dにそれぞれ可撓線で接
続され温度を検出して温度信号を発信する温度検出器30
a,30b,30cおよび30dと、本体31に内装され前記接続子31
a,31bを介して前記検出器30a,30bに接続されて判断要素
毎の判断基準値を算出する判断基準値演算器と、本体31
に内装され、前記接続子31a〜31dを介して前記検出器30
a〜30dに接続され判断要素毎の現状値を算出する現状値
演算器と、該現状値演算器および前記判断基準値演算器
に接続され前記判断基準値と前記現状値とを判断要素毎
に比較して両者の大小関係により流量の多い、少い、適
切の判断をする比較演算器と、該比較演算器に接続さ
れ、判断要素毎にあらかじめ定められた重み値を、流量
の多い、少い、適切の三つの判定区分のそれぞれの場合
に対して定められている判定枠に、前記比較演算器の判
断に従って加算する重み演算器と、該重み加算器に接続
され、該重み演算器が加算した判断要素毎の重み値を、
前記三つの判定区分毎に集計し、いずれの判定区分に属
する重み値集計値が最も大きいかを判定する重み値集計
値比較演算器と、該重み値集計値比較演算器に接続さ
れ、該重み値集計値比較演算器の判定に従って、流量が
多い、少ない、適切のうちのいずれかを液晶画面により
表示する表示器と、を備えている。FIG. 1 is a schematic diagram of the configuration of the cooling water flow rate diagnostic device. The diagnostic device of the present embodiment is applicable to a movable main body 31 and connectors 31a, 31b, 31c, 31d provided on the main body 31. Temperature detector 30 that is connected by a flexible wire and detects temperature and sends a temperature signal
a, 30b, 30c and 30d, and the connector 31 installed in the main body 31
a judgment reference value calculator for calculating a judgment reference value for each judgment element connected to the detectors 30a, 30b via a and 31b, and a main body 31
Is installed in the detector 30 through the connectors 31a to 31d.
a present value calculator connected to a to 30d to calculate the present value for each judgment element, and the judgment reference value and the present value for each judgment element connected to the present value calculator and the judgment reference value calculator A comparison computing unit for making a proper judgment of a large flow amount, a small flow amount, and an appropriate flow amount depending on the magnitude relationship between the two, and a weight value that is predetermined for each judgment element and has a large flow amount In a decision frame defined for each of the three appropriate decision categories, a weight calculator that adds according to the determination of the comparison calculator, and a weight adder that is connected to the weight adder, The weight value for each added judgment element,
A weighted value aggregated value comparison operator for summing up each of the three determination categories and determining which weighted value aggregated value belongs to which determination category, and the weighted value aggregated value comparison operator connected to the weighted value aggregated value comparison operator According to the judgment of the value aggregated value comparison calculator, a display device for displaying on the liquid crystal screen any one of high flow rate, low flow rate and appropriate flow rate is provided.
次に第２図および第３図により、本実施例の動作を説明
する。診断対象の吸収冷温水機は、希溶液を加熱する再
生器１と、加熱された希溶液から分離された冷媒蒸気を
凝縮させて液冷媒とする凝縮器４と、該凝縮器４に接続
して設けられ前記液冷媒を蒸発させて冷媒蒸気とする蒸
発器５と、該蒸発器５に接続して設けられ前記加熱され
た希溶液から分離された吸収液に前記蒸発器４で蒸発し
た冷媒蒸気を吸収させて希溶液を生成する吸収器６と、
該吸収器６と前記再生器１とを低温側溶液熱交換器８お
よび高温側溶液熱交換器９を介して連通し、前記吸収器
６で生成された希溶液を送り出す希溶液流路10と、前記
吸収器６および凝縮器４に内装され入口管17および出口
管19を有する冷却水管18と、前記蒸発器４に内装され入
口管20および出口管21を有する冷温水取出管26とを備え
ている。Next, the operation of this embodiment will be described with reference to FIGS. The absorption chiller-heater to be diagnosed is connected to the regenerator 1 for heating the dilute solution, the condenser 4 for condensing the refrigerant vapor separated from the heated dilute solution into the liquid refrigerant, and the condenser 4. An evaporator 5 provided to evaporate the liquid refrigerant to form a refrigerant vapor; and a refrigerant evaporated in the evaporator 4 into an absorption liquid separated from the heated dilute solution and connected to the evaporator 5. An absorber 6 that absorbs vapor to produce a dilute solution;
A dilute solution flow path 10 for communicating the absorber 6 and the regenerator 1 via a low temperature side solution heat exchanger 8 and a high temperature side solution heat exchanger 9, and sending out the dilute solution produced in the absorber 6. A cooling water pipe 18 provided in the absorber 6 and the condenser 4 and having an inlet pipe 17 and an outlet pipe 19, and a cold / hot water take-out pipe 26 provided in the evaporator 4 and having an inlet pipe 20 and an outlet pipe 21 ing.
吸収冷温水機においては、冷却水流量変化に伴う顕著な
温度変化現象として、 1.冷却水の出口温度（T30c）と入口温度（T30a）との温
度差（DTca＝T30c−T30a）は、交換熱量（冷温水機の除
去熱量）が一定ならば、冷却水流量に反比例する。In the absorption chiller-heater, as a remarkable temperature change phenomenon accompanying the change of the cooling water flow rate, 1. The temperature difference (DTca = T30c-T30a) between the outlet temperature (T30c) and the inlet temperature (T30a) of the cooling water is exchanged. If the amount of heat (the amount of heat removed by the chiller / heater) is constant, it is inversely proportional to the flow rate of cooling water.
2.希溶液の吸収器出口温度（T30d）と冷却水入口温度
（T30a）との温度差（DTda＝T30d−T30a）は冷却水流量
が増加すれば小さくなり、減少すれば大きくなる。2. The temperature difference (DTda = T30d-T30a) between the absorber outlet temperature (T30d) of the dilute solution and the cooling water inlet temperature (T30a) decreases as the cooling water flow rate increases, and increases as it decreases.
3.希溶液の吸収器出口温度（T30d）と冷却水出口温度
（T30c）との温度差（DTdc＝T30d−T30c）は、冷却水流
量が増加すれば大きくなり、減少すれば小さくなる。3. The temperature difference (DTdc = T30d-T30c) between the absorber outlet temperature (T30d) of the dilute solution and the cooling water outlet temperature (T30c) increases as the cooling water flow rate increases and decreases as it decreases.
という三つの現象があり、上記三項目を判断要素として
冷却水の流量診断を行なう。There are three phenomena, and the flow rate of cooling water is diagnosed using the above three items as judgment factors.
この吸収冷温水機の冷却水流量を診断するには、運転状
態の冷温水機の冷却水入口管17に冷却水入口温度T30aを
検出する温度検出器30a、冷却水出口管19に冷却水出口
温度T30cを検出する温度検出器30cと、冷温水出口管21
に冷温水出口温度T30bを検出する温度検出器30b、希溶
液流路10の吸収器出口に希溶液吸収器出口温度T30dを検
出する温度検出器30dが、それぞれと取りつけられ、管
内流体の温度が検出されて判断基準値演算器402、およ
び現状値演算器403に入力される。To diagnose the cooling water flow rate of the absorption chiller-heater, the temperature detector 30a that detects the cooling water inlet temperature T30a in the cooling water inlet pipe 17 of the chiller-heater in the operating state, the cooling water outlet in the cooling water outlet pipe 19 A temperature detector 30c that detects the temperature T30c, and a hot / cold water outlet pipe 21
A temperature detector 30b for detecting the cold / hot water outlet temperature T30b, a temperature detector 30d for detecting the dilute solution absorber outlet temperature T30d at the absorber outlet of the dilute solution flow path 10, and the temperature of the fluid in the pipe are respectively attached. It is detected and input to the judgment reference value calculator 402 and the current value calculator 403.
入力された冷却水入口温度T30aと冷温水出口温度T30bと
あらかじめ定めらてROM上に記憶されている計算式とに
基いて、判断基準値算出器402により、前記判断要素毎
の冷却水流量の上限、下限に対する判断基準値が算出さ
れる。第１表は判断基準値を示す。Based on the input cooling water inlet temperature T30a and the cold / hot water outlet temperature T30b and the formula stored in advance and stored in the ROM, the judgment reference value calculator 402 calculates the cooling water flow rate for each judgment element. Judgment reference values for the upper and lower limits are calculated. Table 1 shows the judgment standard values.
一方、検出され入力された冷却水入口温度T30a、冷却水
出口温度T30c、冷温水出口温度T30b、および希溶液吸収
器出口温度T30dに基いて、現状値演算器403により、第
２表に示す前記判断要素毎の現状の温度差（現状値）が
算出される。 On the other hand, based on the detected and input cooling water inlet temperature T30a, cooling water outlet temperature T30c, cold / hot water outlet temperature T30b, and dilute solution absorber outlet temperature T30d, the current value calculator 403 displays the values shown in Table 2 above. The current temperature difference (current value) for each judgment element is calculated.
上記算出された判断基準値ならびに現状値は、比較演算
器404に入力され、該比較演算器により前記判断要素ご
とに判断基準値と現状値が対比され、当該判断要素にお
ける流量の多い、少ない、適切の判断が行われる。上記
判断の結果が、重み演算器405へ入力され、入力された
前記判断の結果に従って、該重み演算器405によりあら
かじめ前記判断要素ごとに定められた重み値W1,W2,W
3が、多い（EH）、少ない（EL）、適切（EG）という三
つの判定枠のいずれかに加算される。 The calculated judgment reference value and the current value are input to the comparison calculator 404, the comparison calculator compares the judgment reference value and the current value for each judgment element, and the flow rate in the judgment element is large or small. Appropriate judgment is made. The result of the determination is input to the weight calculator 405, and according to the input result of the determination, the weight values W 1 , W 2 and W previously determined for each of the determination elements by the weight calculator 405.
3 is added to any of the three judgment frames: large (EH), small (EL), and appropriate (EG).
なお、判断要素ごとに重み付けする意味は、第１に、判
断要素は複数あり、診断結果に与える影響はそれぞれ異
なるから、与える影響の大きさに応じて重みを付けて診
断の精度を向上させるため、第２に、診断の精度を数字
で表現するため、第３に、現場の診断を数字で表現する
ことによってデータとしてフィードバックするためであ
る。The significance of weighting each judgment element is, firstly, that there are a plurality of judgment elements and the respective influences on the diagnosis result are different, so in order to improve the accuracy of diagnosis by weighting according to the magnitude of the influence. Secondly, the accuracy of the diagnosis is expressed by numbers, and thirdly, the on-site diagnosis is expressed by the numbers and fed back as data.
上記三つの判定枠に加算された重み値は、重み値集計値
比較演算器406により、判定枠ごとに集計され、いずれ
の判定枠に集計された重み値が最も大きい値を有するか
が判定され、最も大きい値を有する判定枠が診断の結果
として表示器407に表示される。判定枠の表示には、流
量の過多、適切、過少の区分の他に、重み値集計値を加
えて表示してもよい。判定枠の表示は本実施例において
は、液晶画面を用いた文字表示としたが、該当判定枠を
ランプで標示する方式でもよい。The weight values added to the above three judgment frames are totaled for each judgment frame by the weight value total value comparison operator 406, and it is judged which judgment frame has the largest weight value. The judgment frame having the largest value is displayed on the display unit 407 as a result of the diagnosis. The judgment frame may be displayed by adding a weighted value aggregate value in addition to the classification of excessive flow rate, appropriate flow rate, and excessive flow rate. In the present embodiment, the display of the judgment frame is a character display using a liquid crystal screen, but it is also possible to display the judgment frame by a lamp.
又、本実施例の診断対象の吸収冷温水機は、二重効用吸
収冷温水機であるが、判断基準値を算出する計算式を差
かえることにより単効用吸収冷温水機にも適用可能であ
る。Further, the absorption chiller-heater to be diagnosed in this embodiment is a double-effect absorption chiller-heater, but it can also be applied to a single-effect absorption chiller-heater by changing the calculation formula for calculating the judgment reference value. is there.
上に述べたように、吸収冷温水機の冷却水流量が、適切
であるが、過多であるかそれとも過少ないのかを、流量
計や圧力計、差圧計を用いることなく、温度を検出する
ことによって診断することが可能であり、しかもあらか
じめ冷温水機に特別の装置を設けておく必要がない。又
診断に必要な作業は、移動式の冷却水流量診断装置に付
属している４個の温度検出器を診断対象の吸収冷温水機
に取付けるのみであり、作業時間が短かくてすむ他、圧
力計を用いる場合に比べて流路内の汚れの影響を小さく
できる効果もある。又複数の判断要素を組み合わせて診
断を行うため、診断の精度が高い。As described above, the temperature of the absorption chiller-heater is detected by detecting the temperature without using a flow meter, pressure gauge, or differential pressure gauge, whether it is appropriate or excessive. It is possible to make a diagnosis by using the above method, and it is not necessary to provide a special device for the water cooler in advance. In addition, the work required for diagnosis is only to attach the four temperature detectors attached to the mobile cooling water flow rate diagnosis device to the absorption chiller-heater to be diagnosed. There is also an effect that the influence of dirt in the flow path can be reduced as compared with the case of using a pressure gauge. Further, since the diagnosis is made by combining a plurality of judgment factors, the accuracy of the diagnosis is high.
本発明によれば、移動可能な本体に、温度検出器と、検
出された温度に基いて判断基準値を算出する判断基準値
演算器と、検出された温度に基いて現状値を算出する現
状値演算器と、算出された判断基準値と現状値に基いて
判断要素ごとに流量の程度を判断する比較演算器と、判
断要素ごとに判断された流量の程度に基づいてあらかじ
め判断要素ごとに設定された重み値を判定枠に加算する
重み演算器と、加算された重み値を集計して流量診断を
行う重み値集計値比較演算器と、診断結果を表示する表
示器を備えた冷却水流量診断装置としたので、吸収冷温
水機の冷却水出入口温度と冷温水出口温度と希溶液吸収
器出口温度とを検出して判断要素ごとの流量の判断基準
値を算出し、この判断基準値と対応する現状値を判断要
素ごとに対比して流量を判定して重み値を算出し、流量
が多い、適切、少ないの各判定枠ごとに重み値を集計し
て流量診断して結果を表示することが可能となり、更に
複数の判断要素について判断を行うので診断の精度が向
上する効果と共に、冷温水機に診断のための装置をあら
かじめ設けておくことなく、４個所の温度の検出だけ
で、容易に吸収冷温水機の冷却水流量の診断が可能とな
る効果がある。According to the present invention, the movable body has a temperature detector, a judgment reference value calculator for calculating a judgment reference value based on the detected temperature, and a current status for calculating the present value based on the detected temperature. A value calculator, a comparison calculator for judging the flow rate for each judgment element based on the calculated judgment reference value and the current value, and for each judgment element beforehand based on the flow rate judged for each judgment element Cooling water that includes a weight calculator that adds the set weight value to the judgment frame, a weight value aggregate value comparison calculator that aggregates the added weight values to perform flow rate diagnosis, and a display that displays the diagnosis result. Since it is a flow rate diagnostic device, it detects the cooling water inlet / outlet temperature of the absorption chiller / heater, the hot / cold water outlet temperature, and the diluted solution absorber outlet temperature to calculate the judgment reference value of the flow rate for each judgment element, and this judgment reference value The current value corresponding to It becomes possible to judge the amount, calculate the weight value, collect the weight value for each judgment frame of large, appropriate, and small flow rate, and diagnose the flow rate and display the result. Since the accuracy of diagnosis is improved, the cooling water flow rate of the absorption chiller / heater can be easily diagnosed by simply detecting the temperature at four points without pre-installing a device for diagnosing the chiller / heater. There is an effect that can be.
第１図は本発明の実施例の構成を示す概要図で、第２図
は本発明の実施例である診断装置を吸収冷温水機へ取付
ける状態を示すブロック図で、第３図は本発明による流
量診断の手順を示すフロー図であり、第４図は、吸収冷
温水機の構成を示すブロックであり、第５図は、吸収冷
温水機の冷却水循環量と冷却水出入口間で生ずる圧力損
失の関係を示すグラフである。 １……再生器、４……凝縮器、 ５……蒸発器、６……吸収器、 8,9……溶液熱交換器、10……希溶液流路、 17……冷却水管入口、18……冷却水管、 19……冷却水管出口、 20……冷温水取出管入口、 21……冷温水取出管出口、 26……冷温水取出管、30……温度検出器、 31……冷却水流量診断装置、 402……判断基準値演算器、 403……現状値演算器、404……比較演算器、 405……重み演算器、 406……重み値集計値比較演算器、 407……表示器。FIG. 1 is a schematic diagram showing a configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing a state in which a diagnostic device according to an embodiment of the present invention is attached to an absorption chiller-heater, and FIG. FIG. 4 is a flow chart showing a procedure of flow rate diagnosis by means of FIG. 4, FIG. 4 is a block showing a configuration of an absorption chiller-heater, and FIG. It is a graph which shows the relationship of loss. 1 ... Regenerator, 4 ... Condenser, 5 ... Evaporator, 6 ... Absorber, 8,9 ... Solution heat exchanger, 10 ... Dilute solution flow path, 17 ... Cooling water pipe inlet, 18 …… Cooling water pipe, 19 …… Cooling water pipe outlet, 20 …… Cold and hot water outlet pipe inlet, 21 …… Cold and warm water outlet pipe outlet, 26 …… Cold and warm water outlet pipe, 30 …… Temperature detector, 31 …… Cooling water Flow rate diagnostic device, 402 …… Judgment reference value calculator, 403 …… Current value calculator, 404 …… Comparison calculator, 405 …… Weight calculator, 406 …… Aggregate weight value comparison calculator, 407 …… Display vessel.
Claims (1)
溶液から分離された冷媒蒸気を凝縮させて液冷媒とする
凝縮器と、前記液冷媒を蒸発させて冷媒蒸気とする蒸発
器と、前記加熱された希溶液から分離された吸収液に前
記蒸発器で蒸発した冷媒蒸気を吸収させて希溶液とする
吸収器と、該吸収器と前記再生器を溶液熱交換器を介し
て連通し、前記吸収器で生成された希溶液を送り出す希
溶液流路と、前記吸収器及び凝縮器に内装され入口及び
出口を有する冷温水取出管と、を備えてなる吸収冷温水
機の、冷温水出口温度、冷却水入口温度、冷却水出口温
度および希溶液吸収器出口温度を検出し温度信号として
発信する温度検出器と、前記温度信号に基づいて判断要
素毎の判断基準値を算出する判断基準値演算器と、前記
温度信号に基づいて判断要素毎の現状値を算出する現状
値演算器と、判断要素毎に前記判断基準値と前記現状値
が入力されて両者を比較しいずれが大きいかを判定する
比較演算器と、前記比較の結果に従って冷却水流量過
多、冷却水流量適切、冷却水流量不足をそれぞれ示す判
定枠にあらかじめ判断要素ごとに定められた重みを加算
する重み演算器と、前記重み値に基づいて診断結果を算
出する重み値集計値比較演算器と、前記診断結果を表示
する表示器とを備えてなり、前記判断要素は冷却水出入
口温度差、希溶液吸収器出口温度と冷却水入口温度との
温度差、希溶液吸収器出口温度と冷却水出口温度との温
度差であることを特徴とする吸収冷温水機の冷却水流量
診断装置。1. A regenerator for heating a dilute solution, a condenser for condensing a refrigerant vapor separated from a heated dilute solution into a liquid refrigerant, and an evaporator for evaporating the liquid refrigerant into a refrigerant vapor. An absorber that absorbs the refrigerant vapor evaporated in the evaporator into a dilute solution by absorbing liquid separated from the heated dilute solution, and the absorber and the regenerator via a solution heat exchanger. A dilute solution flow path communicating with each other, which sends out a dilute solution produced in the absorber, and a cold / hot water take-out pipe which is provided in the absorber and the condenser and has an inlet and an outlet; A temperature detector that detects the cold / hot water outlet temperature, the cooling water inlet temperature, the cooling water outlet temperature, and the diluted solution absorber outlet temperature, and transmits a temperature signal, and a judgment reference value for each judgment element is calculated based on the temperature signal. Based on the judgment reference value calculator and the temperature signal A present value calculator for calculating the present value of each judgment element, a comparison calculator for inputting the judgment reference value and the present value for each judgment element and comparing the two, and judging which is larger, According to the result, a weight calculator that adds weights determined in advance to each determination element in the determination frames indicating excessive cooling water flow rate, appropriate cooling water flow rate, and insufficient cooling water flow rate, and a diagnostic result is calculated based on the weight value. It comprises a weighted value aggregate value comparison calculator and a display for displaying the diagnosis result, and the judgment factors are the cooling water inlet / outlet temperature difference, the temperature difference between the diluted solution absorber outlet temperature and the cooling water inlet temperature, and A cooling water flow rate diagnostic device for an absorption chiller-heater, which is a temperature difference between a solution absorber outlet temperature and a cooling water outlet temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18500087A JPH0674931B2 (en) | 1987-07-24 | 1987-07-24 | Absorption cooling / heating machine cooling water flow rate diagnostic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18500087A JPH0674931B2 (en) | 1987-07-24 | 1987-07-24 | Absorption cooling / heating machine cooling water flow rate diagnostic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6428456A JPS6428456A (en) | 1989-01-31 |
| JPH0674931B2 true JPH0674931B2 (en) | 1994-09-21 |
Family
ID=16163024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18500087A Expired - Fee Related JPH0674931B2 (en) | 1987-07-24 | 1987-07-24 | Absorption cooling / heating machine cooling water flow rate diagnostic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0674931B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100130475A (en) * | 2009-06-03 | 2010-12-13 | 엘지전자 주식회사 | Air conditioner and control process of the same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5554277B2 (en) * | 2011-03-31 | 2014-07-23 | 三菱重工業株式会社 | Heat medium flow rate estimation device, heat source machine, and heat medium flow rate estimation method |
-
1987
- 1987-07-24 JP JP18500087A patent/JPH0674931B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100130475A (en) * | 2009-06-03 | 2010-12-13 | 엘지전자 주식회사 | Air conditioner and control process of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6428456A (en) | 1989-01-31 |
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| LAPS | Cancellation because of no payment of annual fees |