JP2810430B2 - Absorption refrigerator protection device - Google Patents

Absorption refrigerator protection device

Info

Publication number
JP2810430B2
JP2810430B2 JP20446689A JP20446689A JP2810430B2 JP 2810430 B2 JP2810430 B2 JP 2810430B2 JP 20446689 A JP20446689 A JP 20446689A JP 20446689 A JP20446689 A JP 20446689A JP 2810430 B2 JP2810430 B2 JP 2810430B2
Authority
JP
Japan
Prior art keywords
temperature
water inlet
regenerator
cooling water
absorption refrigerator
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
Application number
JP20446689A
Other languages
Japanese (ja)
Other versions
JPH0367966A (en
Inventor
雅裕 古川
敏之 金子
哲郎 岸本
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 JP20446689A priority Critical patent/JP2810430B2/en
Publication of JPH0367966A publication Critical patent/JPH0367966A/en
Application granted granted Critical
Publication of JP2810430B2 publication Critical patent/JP2810430B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Sorption Type Refrigeration Machines (AREA)

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に関し、特に、高温再生器を備え
た吸収冷凍機の保護装置に関する。
The present invention relates to an absorption refrigerator, and more particularly to a protection device for an absorption refrigerator equipped with a high-temperature regenerator.

(ロ)従来の技術 例えば特開昭63−22051号公報には、吸収冷凍機の冷
水出入口温度差に対する冷却水出入口温度差の比率を演
算し、算出した比率が予め設定された限界比率に達して
いるか否かを判別し、算出比率が限界比率に達している
ときには、報知器が警報を発生するとともに、加熱停止
器が動作して高温発生器の加熱を止める吸収冷凍機の保
護装置が開示されている。
(B) Prior art For example, Japanese Patent Application Laid-Open No. 63-22051 discloses that the ratio of the cooling water inlet / outlet temperature difference to the cooling water inlet / outlet temperature difference of an absorption refrigerator is calculated, and the calculated ratio reaches a preset limit ratio. The alarm device issues an alarm when the calculated ratio has reached the limit ratio, and the heating stop device operates to stop the heating of the high-temperature generator. Have been.

(ハ)発明が解決しようとする課題 上記従来の技術において、高負荷時で高温再生器の加
熱量が大きいときなどに高温再生器の過熱を防止するこ
とはできるが、吸収冷凍機の運転時、高温再生器の加熱
停止、及び報知器が動作するまで、吸収冷凍機の管理者
には高温再生器の温度上昇が報知されないため、高温再
生器の異常停止前に、上記温度上昇を知り、事前に点検
などを行い、吸収冷凍機の運転中の高温再生器の停止、
それに伴う吸収冷凍機の運転停止を回避することは困難
であった。
(C) Problems to be Solved by the Invention In the above-described conventional technology, it is possible to prevent overheating of the high-temperature regenerator when the amount of heating of the high-temperature regenerator is large under a high load, but when the absorption refrigerator is operated. Since the heating of the high-temperature regenerator is not notified to the administrator of the absorption refrigerating machine until the heating of the high-temperature regenerator is stopped and the annunciator operates, the abnormal temperature of the high-temperature regenerator is notified before the abnormal stop of the high-temperature regenerator. Perform inspections in advance to stop the high-temperature regenerator while the absorption refrigerator is operating,
It was difficult to avoid the operation stoppage of the absorption refrigerator accompanying it.

本発明は、高温再生器の温度上昇を事前に報知し、吸
収冷凍機の異常停止を防止することを目的とする。
An object of the present invention is to notify a rise in the temperature of a high-temperature regenerator in advance and prevent an abnormal stop of an absorption refrigerator.

(ニ)課題を解決するための手段 本発明は上記課題を解決するために、蒸発器(4)の
冷水出入口温度を検出する温度検出器(32),(31)
と、冷却水入口温度を検出する温度検出器(33)と、高
温再生器(1)の温度を検出する温度検出器(34)と、
温度検出器(31),(32)からの信号を入力して冷水出
入口温度差と100%負荷時の冷水出入口温度差とから負
荷率を演算し、この負荷率と冷却水入口温度とから高温
再生器(1)の予測再生温度を求め、この予測再生温度
と温度検出器(34)が検出した再生温度とを比較して信
号を出力する制御装置(35)と、この制御装置(35)か
らの信号により動作する報知装置(36)とを備えた吸収
冷凍機の保護装置を提供するものである。
(D) Means for Solving the Problems In order to solve the above problems, the present invention provides temperature detectors (32), (31) for detecting the temperature of the cold water inlet / outlet of the evaporator (4).
A temperature detector (33) for detecting a cooling water inlet temperature, a temperature detector (34) for detecting a temperature of the high temperature regenerator (1),
Input the signals from the temperature detectors (31) and (32) to calculate the load factor from the chilled water inlet / outlet temperature difference and the chilled water inlet / outlet temperature difference at 100% load. A control unit (35) for obtaining a predicted regeneration temperature of the regenerator (1), comparing the predicted regeneration temperature with the regeneration temperature detected by the temperature detector (34) and outputting a signal, and a control unit (35) And a notifying device (36) operated by a signal from the apparatus.

(ホ)作 用 吸収冷凍機の運転時、制御装置(35)が温度検出器
(31),(32),(33)及び(34)から信号を入力し、
冷水出入口温度差と100%負荷時の冷水出入口温度差と
から負荷率が求められ、この負荷率と冷却水入口温度と
から高温再生器(1)の予測再生温度が求められる。そ
して、実際の高温再生器(1)の再生温度と予測再生温
度とが比較され、高温再生器(1)の再生温度が予測温
度より所定温度以上高いときには制御装置(35)が信号
を出力し、この信号を入力した報知装置(36)が動作す
るため、負荷に応じて変化する高温再生器(1)の再生
温度が例えれば低負荷時などに上昇したときには、報知
装置(36)が動作して温度上昇を管理者に知らせること
ができ、この結果、高負荷時の温度上昇による異常停止
を予測して吸収冷凍機の点検、冷却水系の汚れの除去な
どが行われ、吸収冷凍機の異常停止を予め防止すること
が可能になる。
(E) Operation During operation of the absorption refrigerator, the control device (35) inputs signals from the temperature detectors (31), (32), (33) and (34),
A load factor is determined from the difference between the chilled water inlet and outlet temperatures and the difference between the chilled water inlet and outlet temperatures at the time of a 100% load, and the predicted regeneration temperature of the high temperature regenerator (1) is determined from the load ratio and the cooling water inlet temperature. Then, the actual regeneration temperature of the high-temperature regenerator (1) is compared with the predicted regeneration temperature. When the regeneration temperature of the high-temperature regenerator (1) is higher than the predicted temperature by a predetermined temperature or more, the control device (35) outputs a signal. When the regeneration temperature of the high-temperature regenerator (1), which changes according to the load, rises at, for example, a low load, the notification device (36) operates. The temperature rise can be notified to the administrator, and as a result, the abnormal stop due to the temperature rise under high load is predicted, the absorption refrigerator is inspected, the cooling water system is cleaned, etc. An abnormal stop can be prevented in advance.

(ヘ)実施例 以下、本発明の一実施例を図面に基づいて詳細に説明
す。
(F) Example Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

第1図に示したものは二重効用吸収冷凍機であり、冷
媒に水(H2O)、吸収剤(吸収液)に臭化リチウム(LiB
r)水溶液を使用したものである。
FIG. 1 shows a double-effect absorption refrigerator having water (H 2 O) as a refrigerant and lithium bromide (LiB) as an absorbent (absorbent).
r) An aqueous solution was used.

第1図において、(1)はガスバーナ(1B)を備えた
高温再生器、(2)は低温再生器、(3)は凝縮器、
(4)は蒸発器、(5)は吸収器、(6)は低温熱交換
器、(7)は高温熱交換器、(8)ないし(12)は吸収
液配管、(15)は吸収液ポンプ、(16)ないし(18)は
冷媒配管、(19)は冷媒ポンプ、(20)はガスバーナ
(1B)に接続されたガス配管、(21)は加熱量制御弁、
(22)は冷水配管であり、それぞれは第1図に示したよ
うに配管接続されている。又、(25)は冷却水配管であ
り、この冷却水配管(25)の途中には吸収器熱交換器
(26)、及び凝縮器熱交換器(27)が設けられている。
In FIG. 1, (1) is a high-temperature regenerator equipped with a gas burner (1B), (2) is a low-temperature regenerator, (3) is a condenser,
(4) is an evaporator, (5) is an absorber, (6) is a low-temperature heat exchanger, (7) is a high-temperature heat exchanger, (8) to (12) are absorbent pipes, and (15) is an absorbent. Pump, (16) to (18) are refrigerant pipes, (19) is a refrigerant pump, (20) is a gas pipe connected to a gas burner (1B), (21) is a heating amount control valve,
(22) are cold water pipes, each of which is connected to the pipes as shown in FIG. Reference numeral (25) denotes a cooling water pipe, and an absorber heat exchanger (26) and a condenser heat exchanger (27) are provided in the cooling water pipe (25).

又、(31),(32)はそれぞれ、冷水配管(22)の蒸
発器(4)の入口側、及び出口側に設けられた第1,第2
温度検出器(冷水温度検出器)、(33)は冷却水配管
(25)の給水器(5)の入口側に設けられた第3温度検
出器(冷却水入口温度検出器)、さらに(34)は高温再
生器(1)に設けられ吸収液の温度(以下再生温度とい
う)を検出する第4温度検出器(再生温度検出器)であ
る。(35)は本発明に関する制御装置であり、この制御
装置は例えば吸収冷凍機の制御盤(図示せず)に設けら
れ、マイクロコンピュータで構成されている。又、(3
6)は制御装置(35)と同様に制御盤に設けられ、制御
装置(35)からの信号を入力して動作する報知装置であ
り、この報知信号は、複数のセグメント素子を備えた表
示装置(37)とブザー(38)とから構成され、表示装置
(37)は制御装置(35)からの信号により例えばALARM
の文字が点滅される。
Also, (31) and (32) are first and second provided on the inlet side and the outlet side of the evaporator (4) of the cold water pipe (22), respectively.
A temperature detector (cooling water temperature detector), (33) is a third temperature detector (cooling water inlet temperature detector) provided on the inlet side of the water supply device (5) of the cooling water pipe (25), and further (34) ) Is a fourth temperature detector (regeneration temperature detector) provided in the high temperature regenerator (1) for detecting the temperature of the absorbing solution (hereinafter referred to as regeneration temperature). (35) is a control device relating to the present invention. This control device is provided, for example, on a control panel (not shown) of the absorption refrigerator and is constituted by a microcomputer. Also, (3
6) is a notification device that is provided on the control panel similarly to the control device (35) and operates by inputting a signal from the control device (35). The notification signal is a display device including a plurality of segment elements. (37) and a buzzer (38), and the display device (37) is operated by a signal from the control device (35).
Flashes.

以下、制御装置(35)の構成について第2図に基づい
て説明する。(39)は上記第1〜第4温度検出器(31)
〜(34)からの信号を入力をして信号変換して中央演算
処理装置(以下CPUという)(40)へ出力する入力イン
ターフェイス、(41)は本発明に関する演算プログラム
などが記憶されている記憶装置(以下ROMという)、(4
2)はCPU(40)からの信号を変換して報知装置(36)へ
出力する出力インターフェイス、(43)は所定時間ごと
に信号を出力する信号発生器(以下CLOCKという)、(4
4)は各温度検出器が検出した温度を記憶する読み込み
消去可能な記憶装置(以下RAMという)、である。ここ
で、上記ROM(41)には冷水入口温度と冷水出口温度と
の差、予め設定されている100%負荷時の冷水出入口温
度差(例えば5℃)とを比較して負荷率(X)%を演算
するプログラムが記憶されている。
Hereinafter, the configuration of the control device (35) will be described with reference to FIG. (39) is the first to fourth temperature detectors (31)
An input interface for inputting signals from (34), converting the signals, and outputting the converted signals to a central processing unit (hereinafter referred to as a CPU) (40); (41) a storage storing an arithmetic program and the like relating to the present invention; Device (hereinafter referred to as ROM), (4
2) is an output interface for converting a signal from the CPU (40) and outputting it to the notification device (36); (43) is a signal generator (hereinafter referred to as CLOCK) for outputting a signal at predetermined time intervals;
4) is a readable and erasable storage device (hereinafter referred to as RAM) for storing the temperature detected by each temperature detector. Here, the ROM (41) compares the difference between the chilled water inlet temperature and the chilled water outlet temperature, and the preset chilled water inlet / outlet temperature difference at a 100% load (for example, 5 ° C.) to compare the load factor (X). A program for calculating% is stored.

又、ROM(41)には例えば第3図に示したように負荷
率と、予測再生温度との冷却水入口温度をパラメータと
した関係が記憶されている。ここで、ROM(41)には冷
却水入口温度が24℃,28℃、及び32℃のときの予測ライ
ン(51),(52)、及び(53)、及び冷却水入口温度よ
り例えば10℃高く予め設定された異常ライン(54),
(55)、及び(56)とが予め記憶されている。さらに、
ROM(41)には上記予測ライン(51),(52)、及び(5
3)、異常ライン(54),(55)、及び(56)の他に、
図示されていないが、冷却水入口温度が例えば20℃〜32
℃の範囲の予測ラインが1℃ごとに記憶され、かつそれ
ぞれの冷却水入口温度に対する異常ラインが予め記憶さ
れている。
The ROM (41) stores, for example, the relationship between the load factor and the predicted regeneration temperature using the cooling water inlet temperature as a parameter, as shown in FIG. Here, the ROM (41) shows, for example, 10 ° C. from the prediction lines (51), (52), and (53) when the cooling water inlet temperature is 24 ° C., 28 ° C., and 32 ° C., and the cooling water inlet temperature. High preset abnormal line (54),
(55) and (56) are stored in advance. further,
The prediction lines (51), (52), and (5)
3) In addition to the abnormal lines (54), (55), and (56),
Although not shown, the cooling water inlet temperature is, for example, 20 ° C to 32 ° C.
A predicted line in the range of ° C. is stored for each 1 ° C., and an abnormal line for each cooling water inlet temperature is stored in advance.

上記吸収冷凍機の運転時、従来の吸収冷凍機と同様に
高温再生器(1)へ蒸発した冷媒は低温再生器(2)を
経て凝縮器(3)へ流れ、凝縮器熱交換器(27)を流れ
る水と熱交換して凝縮液化した後冷媒配管(17)を介し
て蒸発器(4)へ流れる。そして、冷媒が冷水配管(2
2)内の水と熱交換して蒸発し、気化熱によって冷水配
管(22)内の水が冷却される。そして、冷水が負荷に循
環する。また、蒸発器(4)で蒸発した冷媒は吸収器
(5)で吸収液に吸収される。そして、冷媒を吸収して
濃度が薄くなった吸収液が吸収液ポンプ(15)の運転に
より低温熱交換器(6)、及び高温熱交換器(7)を経
て高温再生器(1)へ送られる。高温再生器(1)に入
った吸収液はバーナ(1B)によって加熱され、冷媒が蒸
発し、中濃度の吸収液が高温熱交換器(7)を経て低温
再生器(2)へ入る。そして、吸収液は高温再生器
(1)から冷媒配管(16)を流れて来た冷媒蒸気によっ
て加熱され、さらに冷媒が蒸発分離され濃度が高くな
る。高濃度になった吸収液(以下濃液という)は低温熱
交換器(6)を経て温度低下して吸収器(5)へ送ら
れ、散布される。
During the operation of the absorption refrigerator, the refrigerant evaporated to the high-temperature regenerator (1) flows to the condenser (3) via the low-temperature regenerator (2) in the same manner as the conventional absorption refrigerator, and the refrigerant heat exchanger (27) ) Is condensed and liquefied by exchanging heat with the flowing water, and then flows to the evaporator (4) via the refrigerant pipe (17). And the refrigerant is cold water piping (2
2) The water in the cold water pipe (22) is cooled by heat exchange with the water in the pipe and evaporated by heat of vaporization. Then, cold water circulates through the load. The refrigerant evaporated in the evaporator (4) is absorbed by the absorbing liquid in the absorber (5). Then, the absorbing liquid whose concentration has been reduced by absorbing the refrigerant is sent to the high-temperature regenerator (1) through the low-temperature heat exchanger (6) and the high-temperature heat exchanger (7) by operating the absorbing liquid pump (15). Can be The absorbing liquid entering the high-temperature regenerator (1) is heated by the burner (1B), the refrigerant evaporates, and the medium-concentration absorbing liquid enters the low-temperature regenerator (2) via the high-temperature heat exchanger (7). Then, the absorbing liquid is heated by the refrigerant vapor flowing from the high-temperature regenerator (1) through the refrigerant pipe (16), and the refrigerant is further evaporated and separated to have a high concentration. The absorption liquid having a high concentration (hereinafter referred to as a concentrated liquid) is sent to the absorber (5) after being cooled down through the low-temperature heat exchanger (6), and is dispersed.

以上のように、吸収冷凍機が運転されているとき、第
1〜第4温度検出器(31)〜(34)が検出する各温度は
入力インターフェイス(39)、及びCPU(40)を介してR
AM(44)に一時記憶される。そして、CLOCK(43)から
の信号に基づいて所定時間ごとにRAM(44)に記憶され
ている冷水入口温度と冷水出口温度とがCPU(40)へ読
み込まれると共に、ROM(41)から演算プログラムが読
み込まれる。そして、冷水出入口温度差と100%負荷時
の冷水出入口温度差とから負荷率(X)%が演算され
る。ここで、例えば冷水入口温度が18℃で、出口温度が
14℃であり、温度差が4℃のときには負荷率は4/5=0.8
(80%)になる。
As described above, when the absorption refrigerator is operating, each temperature detected by the first to fourth temperature detectors (31) to (34) is input via the input interface (39) and the CPU (40). R
Stored temporarily in AM (44). Then, based on a signal from the CLOCK (43), the chilled water inlet temperature and the chilled water outlet temperature stored in the RAM (44) are read into the CPU (40) at predetermined time intervals, and the operation program is read from the ROM (41). Is read. Then, the load factor (X)% is calculated from the chilled water inlet / outlet temperature difference and the chilled water inlet / outlet temperature difference at the time of 100% load. Here, for example, the cold water inlet temperature is 18 ° C and the outlet temperature is
When the temperature difference is 4 ° C, the load factor is 4/5 = 0.8
(80%).

さらに、第3温度検出器(33)が検出した冷却水入口
温度がRAM(44)からCPUへ読み込まれると共に、負荷率
と高温再生器の予測再生温度との関係データがROM(4
1)からCPU(40)へ読み込まれる、上記関係データから
予測再生温度(Y)℃が求められる。そして、冷却水温
度が例えば28℃のときには、上記予測再生温度(Y)は
ほぼ130℃になる。そして、同時に第4温度検出器(3
4)の検出温度、即ち再生温度がRAM(44)からCPU(4
0)へ読み込まれ、上記予測再生温度と比較される。こ
こで、検出温度が例えば128℃で、温度差が10℃より小
さいとき、即ち、検出温度が異常ライン(56)より低い
ときには、CPU(40)は出力インターフェイス(42)へ
出力しない。このため、報知装置(36)は動作しない。
又、冷却水系の汚れ、又は不凝縮ガスの影響などにより
再生温度が例えば145℃で予測再生温度より10以上高い
場合には、CPU(40)が出力インターフェイス(42)へ
信号を出力し、出力インターフェイス(42)から報知装
置(36)へ報知信号が出力され、表示部(37)にALARM
の文字が点滅すると共に、ブザー(38)が発音して再生
温度が高いことが報知される。
Further, the cooling water inlet temperature detected by the third temperature detector (33) is read from the RAM (44) to the CPU, and the relation data between the load factor and the predicted regeneration temperature of the high-temperature regenerator is stored in the ROM (4).
The predicted reproduction temperature (Y) ° C. is obtained from the above-mentioned relation data read from 1) to the CPU (40). When the cooling water temperature is, for example, 28 ° C., the predicted regeneration temperature (Y) becomes approximately 130 ° C. At the same time, the fourth temperature detector (3
4) The detected temperature, that is, the regeneration temperature is changed from the RAM (44) to the CPU (4).
0) and compared with the predicted regeneration temperature. Here, when the detected temperature is, for example, 128 ° C. and the temperature difference is smaller than 10 ° C., that is, when the detected temperature is lower than the abnormal line (56), the CPU (40) does not output to the output interface (42). Therefore, the notification device (36) does not operate.
When the regeneration temperature is, for example, 145 ° C. and is higher than the predicted regeneration temperature by 10 or more due to the influence of contamination of the cooling water system or the effect of non-condensable gas, the CPU (40) outputs a signal to the output interface (42) and outputs the signal. A notification signal is output from the interface (42) to the notification device (36), and ALARM is displayed on the display (37).
Flashes and the buzzer (38) sounds to notify that the reproduction temperature is high.

上記報知装置(36)の動作により例えば吸収冷凍機の
管理者が再生温度高を知り、例えば吸収冷凍機のサービ
スステーションに連絡し、吸収冷凍機の点検が行われ
る。そして、吸収冷凍機の運転停止時に冷却水系の汚れ
の除去、抽気ポンプ(図示せず)による不凝縮ガスの機
外への排出などが行われる。
By the operation of the notification device (36), for example, the administrator of the absorption chiller knows the high regeneration temperature, contacts the service station of the absorption chiller, for example, and checks the absorption chiller. Then, when the operation of the absorption chiller is stopped, dirt of the cooling water system is removed, and non-condensable gas is discharged outside the device by a bleeding pump (not shown).

又、例えば第1,第2温度検出器(31),(32)が検出
する冷水入口温度と冷水出口検出温度との差が例えば2
℃であるときには、この温度差から負荷率が演算され負
荷率は2/5=0.4(40%)になる。そして、このような低
負荷時に冷却水入口温度が例えば24℃のときには、CPU
(40)にて、第3図に示したデータから予測再生温度が
求められる。そして、求められた予測再生温度(ほぼ10
4℃)と第4温度検出器(34)が検出した再生温度とが
比較される。このとき、再生温度が例えば115℃で予測
再生温度より10℃以上高い場合には上記と同様にCPU(4
0)から出力インターフェイス(42)へ信号が出力され
る。そして、出力インターフェイス(42)は報知信号を
報知装置(36)へ出力し、報知装置(36)が動作する。
又、再生温度が例えば110℃で予測再生温度より10℃高
い異常ラインより低いときにはCPU(40)は出力せず、
報知装置(36)による再生温度高は報知されない。
Also, for example, the difference between the chilled water inlet temperature detected by the first and second temperature detectors (31) and (32) and the chilled water outlet detected temperature is, for example, 2
When the temperature is ° C., the load factor is calculated from this temperature difference, and the load factor becomes 2/5 = 0.4 (40%). When the cooling water inlet temperature is, for example, 24 ° C. at such a low load, the CPU
At (40), a predicted regeneration temperature is obtained from the data shown in FIG. Then, the calculated predicted regeneration temperature (almost 10
4 ° C.) and the regeneration temperature detected by the fourth temperature detector (34). At this time, if the regeneration temperature is, for example, 115 ° C. and is higher than the predicted regeneration temperature by 10 ° C. or more, the CPU (4
0) to the output interface (42). Then, the output interface (42) outputs a notification signal to the notification device (36), and the notification device (36) operates.
Also, when the regeneration temperature is, for example, 110 ° C. and lower than the abnormal line which is 10 ° C. higher than the predicted regeneration temperature, the CPU (40) does not output,
The high regeneration temperature by the notification device (36) is not notified.

上記、実施例によれば吸収冷凍機の運転時、100%負
荷時の冷水出入口温度差に対する検出温度から求められ
た冷水出入口温度差の比率から負荷率が設けられ、この
負荷率と冷却水入口温度とから予測再生温度が求められ
る。そして、この予測再生温度と高温再生器(1)の再
生温度とが比較され、再生温度が予測再生温度より10℃
以上高い場合には負荷の大きさに関係なくCPU(40)が
信号を出力し、再生温度が高いことが報知装置により管
理者に報知されるため、高温再生器(1)の再生温度が
高いことを低負荷時、又は中間負荷時に管理者に知らせ
ることができ、高負荷時の異常を予測して吸収冷凍機の
点検、冷却水系の汚れの除去、又は不凝縮ガスの排出を
行うことができ、この結果、吸収冷凍機の予防保全を図
ることできる。又、高負荷時の高温再生器(1)の再生
温度の異常高を回避して、高温再生器(1)の腐食を抑
えることができる。
According to the above embodiment, during the operation of the absorption refrigerator, the load factor is provided from the ratio of the chilled water inlet / outlet temperature difference obtained from the detected temperature to the chilled water inlet / outlet temperature difference at 100% load. A predicted regeneration temperature is determined from the temperature. Then, the predicted regeneration temperature is compared with the regeneration temperature of the high-temperature regenerator (1), and the regeneration temperature is 10 ° C. lower than the predicted regeneration temperature.
If the load is higher than this, the CPU (40) outputs a signal regardless of the size of the load, and the notification device notifies the administrator that the reproduction temperature is high. Therefore, the reproduction temperature of the high-temperature regenerator (1) is high. This can be notified to the administrator at low load or intermediate load, and it is possible to predict abnormalities at high load, inspect the absorption refrigerator, remove dirt from the cooling water system, or discharge non-condensable gas. As a result, preventive maintenance of the absorption refrigerator can be achieved. Further, it is possible to avoid an abnormally high regeneration temperature of the high-temperature regenerator (1) at the time of high load, and to suppress corrosion of the high-temperature regenerator (1).

尚、本発明は上記実施例に限定されるものではなく、
例えば負荷率と冷却水入口温度とから予測再生温度を演
算する式を実験データから導き出し、この式をROM(4
1)に記憶し、吸収冷凍機の運転時、CPU(40)にて負荷
率と冷却水入口温度とから予測再生温度を演算し、予測
再生温度と検出した再生温度とを比較して、再生温度が
予測再生温度より所定温度以上高い場合に、CPU(40)
から信号を出力し、報知装置(36)を動作させるように
した場合にも同様の作用効果を得ることができる。
The present invention is not limited to the above embodiment,
For example, an equation for calculating the predicted regeneration temperature from the load factor and the cooling water inlet temperature is derived from the experimental data, and this equation is calculated using the ROM (4
1) When the absorption chiller is operating, the CPU (40) calculates the predicted regeneration temperature from the load factor and the cooling water inlet temperature, compares the predicted regeneration temperature with the detected regeneration temperature, and regenerates. If the temperature is higher than the predicted regeneration temperature by a predetermined temperature or more, the CPU (40)
A similar function and effect can be obtained when a signal is output from the controller and the notification device (36) is operated.

又、上記実施例において、報知装置(36)を制御盤に
設けたが、報知装置(36)を例えば吸収冷凍機のサービ
スステーションに設け、出力インターフェイス(42)と
報知装置(36)とを通信回線で接続し、再生温度の上昇
時には直ちにサービスの人に温度上昇が報知され、吸収
冷凍機の点検が行われるようにした場合にも、上記実施
例と同様の作用効果を得ることができ、かつ、一層確実
に吸収冷凍機の予防保全を図ることができる。
In the above embodiment, the notification device (36) is provided on the control panel. However, the notification device (36) is provided, for example, at a service station of an absorption refrigerator, and the output interface (42) communicates with the notification device (36). When connected by a line, when the regeneration temperature rises, the service person is immediately notified of the temperature rise, and even when the absorption refrigerator is inspected, the same operation and effect as those of the above embodiment can be obtained. In addition, preventive maintenance of the absorption refrigerator can be achieved more reliably.

(ト)発明の効果 本発明は以上のように構成された吸収冷凍機の保護装
置であり、検出温度から求められた冷水出入口温度差と
100%負荷時の冷水出入口温度差とから負荷率を求め、
この負荷率と冷却水入口温度とから高温再生器の温度を
予測し、この予測再生温度と検出した再生温度とを比較
して、それぞれの温度の差が所定温度以上のときは制御
装置と、この制御装置からの信号により動作する報知装
置とを備えているので、低負荷時、又は中間負荷時に
も、高温再生器の温度が上昇したときには報知装置によ
り管理者などに温度上昇を報知することができ、この結
果、吸収冷凍機の予防保全を図り、高負荷時の高温再生
器温度の上昇による吸収冷凍機の異常停止を回避するこ
とができる。
(G) Effects of the Invention The present invention is a protection device for an absorption refrigerator configured as described above, and includes a difference between a chilled water inlet / outlet temperature difference obtained from a detected temperature.
Calculate the load factor from the chilled water inlet / outlet temperature difference at 100% load,
Predict the temperature of the high-temperature regenerator from the load factor and the cooling water inlet temperature, compare the predicted regeneration temperature with the detected regeneration temperature, and when the difference between the respective temperatures is equal to or more than a predetermined temperature, A notification device that operates by a signal from the control device is provided, so that when the temperature of the high-temperature regenerator rises even at a low load or an intermediate load, the notification device notifies the administrator of the rise in temperature. As a result, preventive maintenance of the absorption refrigerator can be achieved, and abnormal stoppage of the absorption refrigerator due to an increase in the temperature of the high-temperature regenerator at a high load can be avoided.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明の一実施例を示す吸収冷凍機の回路構成
図、第2図は制御装置のブロック・ダイアグラム、第3
図は負荷率と予測再生温度との関係図、第4図は制御装
置の動作を説明するフローチャートである。 (1)……高温再生器、(3)……凝縮器、(4)……
蒸発器、(5)……吸収器、(31)……冷水入口温度検
出器、(32)……冷水出口温度検出器、(33)……冷却
水入口温度検出器、(34)……再生温度検出器、(35)
……制御装置、(36)……報知装置。
FIG. 1 is a circuit configuration diagram of an absorption refrigerator showing one embodiment of the present invention, FIG. 2 is a block diagram of a control device, FIG.
The figure shows the relationship between the load factor and the predicted regeneration temperature, and FIG. 4 is a flowchart for explaining the operation of the control device. (1) High temperature regenerator (3) Condenser (4)
Evaporator, (5) ... Absorber, (31) ... Cold water inlet temperature detector, (32) ... Cold water outlet temperature detector, (33) ... Cooling water inlet temperature detector, (34) ... Regeneration temperature detector, (35)
…… Control device, (36) …… Notification device.

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平1−123959(JP,A) 特開 昭60−44776(JP,A) 特開 昭63−75451(JP,A) (58)調査した分野(Int.Cl.6,DB名) F25B 15/00 306────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-123959 (JP, A) JP-A-60-44776 (JP, A) JP-A-63-75451 (JP, A) (58) Investigation Field (Int.Cl. 6 , DB name) F25B 15/00 306

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】高温再生器、凝縮器、蒸発器、及び吸収器
などを配管接続してなる吸収冷凍機において、蒸発器の
冷水出入口温度をそれぞれ検出する冷水出入口温度検出
器と、吸収器あるいは凝縮器の冷却水入口温度を検出す
る冷却水入口温度検出器と、高温再生器の温度を検出す
る温度検出器と、上記冷水出入口温度検出器からの信号
を入力して冷水出入口温度差と100%負荷時の冷水出入
口温度差とから負荷率を演算し、かつ、この負荷率と冷
却水入口温度とから高温再生器の予測温度を求め、この
予測温度と高温再生器の温度とを比較して信号を出力す
る制御装置と、この制御装置からの信号により動作する
報知装置とから構成されたことを特徴とする吸収冷凍機
の保護装置。
A cooling water inlet / outlet temperature detector for detecting a cold water inlet / outlet temperature of an evaporator, an absorber or an absorber, in an absorption refrigerator having piping connected to a high temperature regenerator, a condenser, an evaporator, an absorber, and the like. A cooling water inlet temperature detector for detecting the cooling water inlet temperature of the condenser, a temperature detector for detecting the temperature of the high temperature regenerator, and a signal from the cold water inlet / outlet temperature detector to input a signal from the cold water inlet / outlet temperature difference to 100. % Of the chilled water inlet / outlet temperature difference at the time of the% load, and the predicted temperature of the high temperature regenerator is calculated from the load factor and the cooling water inlet temperature, and the predicted temperature is compared with the temperature of the high temperature regenerator. A protection device for an absorption refrigerator, comprising: a control device that outputs a signal from the control device; and a notification device that operates based on a signal from the control device.
JP20446689A 1989-08-07 1989-08-07 Absorption refrigerator protection device Expired - Fee Related JP2810430B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20446689A JP2810430B2 (en) 1989-08-07 1989-08-07 Absorption refrigerator protection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20446689A JP2810430B2 (en) 1989-08-07 1989-08-07 Absorption refrigerator protection device

Publications (2)

Publication Number Publication Date
JPH0367966A JPH0367966A (en) 1991-03-22
JP2810430B2 true JP2810430B2 (en) 1998-10-15

Family

ID=16491002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20446689A Expired - Fee Related JP2810430B2 (en) 1989-08-07 1989-08-07 Absorption refrigerator protection device

Country Status (1)

Country Link
JP (1) JP2810430B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023210734A1 (en) * 2022-04-28 2023-11-02 パナソニックIpマネジメント株式会社 Refrigeration cycle device

Also Published As

Publication number Publication date
JPH0367966A (en) 1991-03-22

Similar Documents

Publication Publication Date Title
JP2810430B2 (en) Absorption refrigerator protection device
JPS6115993B2 (en)
JP3054553B2 (en) Absorption chiller / heater failure diagnosis device
JP3195087B2 (en) Absorption refrigerator
JP3258687B2 (en) Abnormality detector for absorption refrigerator
JP3195085B2 (en) Absorption refrigerator
JP2823265B2 (en) Absorption refrigerator
JP2902946B2 (en) Abnormality determination device for absorption type water heater
JP3258684B2 (en) Abnormality detector for absorption refrigerator
JP3253211B2 (en) Absorption chiller / heater fault diagnosis system
JP3258692B2 (en) Abnormality detector for absorption refrigerator
JP3208165B2 (en) Abnormality detector for absorption refrigerator
JP3258686B2 (en) Abnormality detector for absorption refrigerator
JP3083929B2 (en) Failure diagnosis system for absorption refrigerator
JP2771626B2 (en) Absorption refrigerator
JP2771600B2 (en) Control panel of absorption refrigerator
JP2865328B2 (en) Abnormality notification device and abnormality notification method for absorption refrigerator
JP3058677B2 (en) Absorption refrigerator
JP3187878B2 (en) Absorption refrigerator protection device
JP2004239504A (en) Diagnosing method and device for absorption type chiller and heater
JPH06159871A (en) Absorption type refrigerating machine
JP2785143B2 (en) Operating method of absorption refrigerator
JP3208463B2 (en) Absorption refrigerator
JP2657702B2 (en) Operating method of absorption refrigeration system
JP3279069B2 (en) Absorption refrigerator

Legal Events

Date Code Title Description
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080731

Year of fee payment: 10

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 10

Free format text: PAYMENT UNTIL: 20080731

FPAY Renewal fee payment (prs date is renewal date of database)

Year of fee payment: 11

Free format text: PAYMENT UNTIL: 20090731

LAPS Cancellation because of no payment of annual fees