JP2744034B2 - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JP2744034B2 JP2744034B2 JP63314344A JP31434488A JP2744034B2 JP 2744034 B2 JP2744034 B2 JP 2744034B2 JP 63314344 A JP63314344 A JP 63314344A JP 31434488 A JP31434488 A JP 31434488A JP 2744034 B2 JP2744034 B2 JP 2744034B2
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- regenerator
- absorption
- rotation speed
- pump
- 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 - Lifetime
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- Sorption Type Refrigeration Machines (AREA)
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明は再生器の吸収液温度に基づいて吸収液ポンプ
の回転数が制御される吸収冷凍機に関する。The present invention relates to an absorption refrigerator in which the rotation speed of an absorption liquid pump is controlled based on the temperature of the absorption liquid in a regenerator.
（ロ） 従来の技術 例えば特公昭58-51577号公報には、冷水負荷の変化に
応じて変化する物理量（高温再生器の吸収液温度等）に
基づいて吸収液ポンプの回転数を制御する回転数制御装
置を備えたパラレルフロー方式の吸収冷凍機が開示され
ている。(B) Conventional technology For example, Japanese Patent Publication No. 58-51577 discloses a rotation for controlling the rotation speed of an absorption liquid pump based on a physical quantity (such as an absorption liquid temperature of a high-temperature regenerator) that changes according to a change of a chilled water load. A parallel flow absorption refrigerator equipped with a number control device is disclosed.
（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、高温再生器の加熱停止時、
高温再生器の加熱が停止してから吸収液の温度の低下に
比較して高温再生器内の圧力の低下が速いため、高温再
生器の加熱開始時と同様に吸収液温度に基づいて吸収液
ポンプの回転数を制御した場合には、吸収液ポンプの回
転数が高く、高温再生器へ送られる吸収液の量が多くな
る。このため、高温再生器の吸収液面が上昇して吸収液
の冷媒への混入が発生する虞れがあった。(C) Problems to be solved by the invention In the above-mentioned conventional technology, when heating of the high-temperature regenerator is stopped,
After the heating of the high-temperature regenerator is stopped, the pressure in the high-temperature regenerator drops faster than the temperature of the absorbing solution decreases. When the number of rotations of the pump is controlled, the number of rotations of the absorption liquid pump is high, and the amount of the absorption liquid sent to the high-temperature regenerator is large. For this reason, the absorption liquid level of the high-temperature regenerator may rise and the absorption liquid may be mixed into the refrigerant.
又、高温再生器の温度低下に応じて吸収液ポンプの回
転数を少なくした場合、吸収液ポンプの低回転数での運
転時間が短くなり、稀釈運転時間が不十分になり、吸収
液の循環回路で吸収液の結晶が発生する虞れがあった。Also, if the rotation speed of the absorbent pump is reduced according to the temperature decrease of the high-temperature regenerator, the operation time at the low rotation speed of the absorption pump becomes short, the dilution operation time becomes insufficient, and the circulation of the absorption liquid becomes insufficient. Crystals of the absorbing solution may be generated in the circuit.
本発明は再生器の加熱停止時の吸収液の冷媒への混入
を防止すると共に、稀釈運転を確実に行わせ、吸収液の
結晶発生を防止することを目的とする。An object of the present invention is to prevent the absorption liquid from being mixed into the refrigerant when the heating of the regenerator is stopped, and to surely perform the dilution operation, thereby preventing the generation of crystals of the absorption liquid.
（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、吸収液を吸収
器から再生器へ送る吸収液ポンプを備えた吸収冷凍機に
おいて、吸収液ポンプの回転数を再生器内の吸収液温度
と回転数との間に予め定められた関係に基づいて連続的
に変えると共に、この関係は少なくとも再生器の加熱開
始の際に用いる関係と再生器の加熱停止の際に用いる関
係とを備え、これら両関係の間には再生器の加熱停止の
際に再生器の吸収液温度が所定温度より高いときには同
一の吸収液温度で再生器の加熱停止の際に用いる関係か
ら得られる吸収液ポンプの回転数より再生器の加熱開始
の際に用いる関係から得られる吸収液ポンプの回転数が
高く設定されている回転数制御装置を備えた吸収冷凍機
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 an absorption refrigerator having an absorption liquid pump for sending an absorption liquid from an absorber to a regenerator. The temperature is continuously changed based on a predetermined relationship between the temperature of the absorbing solution in the regenerator and the number of rotations, and this relationship is at least a relationship used when starting heating of the regenerator and a relationship used when heating of the regenerator is stopped. The relationship used when the heating of the regenerator is stopped at the same absorption liquid temperature when the temperature of the absorbent is higher than a predetermined temperature when the heating of the regenerator is stopped. The present invention provides an absorption refrigerator having a rotation speed control device in which the rotation speed of the absorption pump obtained from the relationship used at the start of heating of the regenerator is set higher than the rotation speed of the absorption pump obtained from is there.
又、さらに再生器の加熱停止の際に用いる関係は、再
生器内の吸収液温度が所定温度より低いときは吸収液ポ
ンプの回転数を所定回転数に保つ吸収冷凍機を提供する
ものである。Further, the relationship used when the heating of the regenerator is stopped is to provide an absorption refrigerator in which the rotation speed of the absorption liquid pump is kept at a predetermined rotation speed when the temperature of the absorption liquid in the regenerator is lower than a predetermined temperature. .
（ホ） 作用 吸収冷凍機の運転停止時等の加熱停止時に、高温再生
器（１）の吸収液温度が所定温度より高いときには、吸
収液ポンプ（15）の回転数が吸収液温度に基づき起動時
より低く制御され、高温再生器（１）の吸収液温度の低
下が速い加熱停止時の高温再生器（１）への吸収液供給
量を少なくすることができ、吸収液面高を回避して吸収
液の冷媒への混入を防止することが可能になる。(E) Function At the time of stopping the heating such as when stopping the operation of the absorption refrigerator, when the temperature of the absorbent in the high-temperature regenerator (1) is higher than a predetermined temperature, the rotation speed of the absorbent pump (15) is started based on the temperature of the absorbent. It is controlled to be lower than the time, and the temperature of the absorbing solution in the high-temperature regenerator (1) decreases rapidly. The amount of the absorbing solution supplied to the high-temperature regenerator (1) when heating is stopped can be reduced, and the level of the absorbing solution can be avoided. Thus, it is possible to prevent the absorption liquid from being mixed into the refrigerant.
又、高温再生器（１）の吸収液温度が所定温度以下に
なったときには、吸収液ポンプ（15）の回転数が所定回
転数で一定に保たれ、吸収液温度が所定温度以下になっ
てからも、吸収液が吸収器（５）から高温再生器（１）
へ送られ、稀釈運転が確実に行われ、加熱停止に伴う吸
収液の結晶発生を防止することが可能になる。When the temperature of the absorbent in the high-temperature regenerator (1) becomes lower than the predetermined temperature, the rotational speed of the absorbent pump (15) is kept constant at the predetermined speed, and the temperature of the absorbent becomes lower than the predetermined temperature. From the absorber (5) to the high-temperature regenerator (1)
Then, the dilution operation is reliably performed, and it is possible to prevent the generation of crystals of the absorbing solution due to the stop of the heating.
（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
する。(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）を、吸収剤（吸収液）に臭化リチウム（L
iBr）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 (L) as an absorbent (absorbent).
iBr) using an aqueous solution.
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。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.
又、（25）は冷却水配管であり、この冷却水配管（2
5）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。そして、冷却水配管（2
5）に冷却塔、及び冷却水ポンプ（共に図示せず）が接
続され、冷却回路が構成されている。Also, (25) is a cooling water pipe, and this cooling water pipe (2
In the middle of 5), an absorber heat exchanger (26) and a condenser heat exchanger (27) are provided. And cooling water piping (2
A cooling tower and a cooling water pump (both not shown) are connected to 5) to form a cooling circuit.
又、（31）は高温再生器（１）に設けられ、高温再生
器（１）内の吸収液温度を検出する吸収液温度検出器
（以下第１温度センサという）、（32）は冷却水配管
（25）の吸収器（５）入口側に設けられた冷却水入口温
度検出器（以下第２温度センサという）、（33）は回転
数制御装置であり、この回転数制御装置（33）は第1,第
２温度センサ（31），（32）から温度信号を入力し、そ
れぞれの温度信号に基づいて動作し、吸収液ポンプ（1
5）へ所定周波数の電力を供給する。ここで回転数制御
装置（33）には、第２図に示したように、冷却水入口温
度に応じて変化する高温再生器（１）の吸収液温度と周
波数とのデータが記憶されている。ここで、第２図は、
高温再生器（１）の吸収液温度に対する吸収冷凍機の運
転効率が最大になる吸収液ポンプ（15）への電力周波数
を示したものであり、高温再生器（１）の吸収液温度と
周波数との関係は２次曲線で表現できる。そして、冷却
水入口温度が上昇し、吸収液温度が上昇すると電力周波
数が上昇し、又冷却水入口温度が低下し、吸収液温度が
低下すると電力周波数が低下する。又、吸収冷凍機の起
動時、第２図の冷却水入口温度が22℃のラインに沿って
電力周波数が変化し、停止時、32℃のラインに沿って電
力周波数が変化する。Further, (31) is provided in the high-temperature regenerator (1), and an absorbent temperature detector (hereinafter referred to as a first temperature sensor) for detecting the temperature of the absorbent in the high-temperature regenerator (1), and (32) is cooling water. A cooling water inlet temperature detector (hereinafter referred to as a second temperature sensor) provided on the inlet side of the absorber (5) of the pipe (25), (33) is a rotation speed control device, and this rotation speed control device (33) Receives temperature signals from the first and second temperature sensors (31) and (32), operates based on the respective temperature signals, and operates the absorption liquid pump (1).
5) Supply power of a predetermined frequency to Here, as shown in FIG. 2, the rotation speed control device (33) stores data on the temperature and frequency of the absorbing solution of the high-temperature regenerator (1) that changes according to the cooling water inlet temperature. . Here, FIG.
It shows the power frequency to the absorbent pump (15) that maximizes the operating efficiency of the absorption refrigerator with respect to the absorbent temperature of the high-temperature regenerator (1). Can be expressed by a quadratic curve. Then, when the cooling water inlet temperature rises and the absorbing liquid temperature rises, the power frequency rises, and when the cooling water inlet temperature falls and the absorbing liquid temperature falls, the power frequency falls. In addition, when the absorption refrigerator is started, the power frequency changes along the line where the cooling water inlet temperature in FIG. 2 is 22 ° C., and when stopped, the power frequency changes along the 32 ° C line.
上記吸収冷凍機の運転時、高温再生器（１）で蒸発し
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）内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、冷媒液が冷水配管（22）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、冷水が負荷に循環して冷房運転が行わ
れる。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
濃度の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）、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）に入る。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り加熱さ
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。ここで、第２図に示したように冷却水入口温度
に応じて高温再生器（１）の吸収温度と周波数との関係
が切り換わる。尚、第２図は代表的な制御ラインを示し
ている。During the operation of the absorption refrigerator, the refrigerant evaporated in the high-temperature regenerator (1) flows through the low-temperature regenerator (2) to the condenser (3),
It condenses and liquefies by exchanging heat with water flowing in the condenser heat exchanger (27), and then flows to the evaporator (4) via the refrigerant pipe (17). Then, the refrigerant liquid exchanges heat with water in the cold water pipe (22) to evaporate, and the water in the cold water pipe (22) is cooled by heat of vaporization. Then, the cooling water is circulated to the load to perform the cooling operation. The refrigerant evaporated in the evaporator (4) is absorbed by the absorbing liquid in the absorber (5). Then, the absorption liquid having a reduced concentration 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 the operation of the absorption liquid pump (15). . The absorbent entering the high-temperature regenerator (1) is heated by the burner (1B), the refrigerant evaporates, and the medium-concentration absorbent enters the low-temperature regenerator (2) via the high-temperature heat exchanger (7). And the absorption liquid is a high temperature regenerator (1)
The refrigerant is heated by the refrigerant vapor flowing through the refrigerant pipe (16), and the refrigerant is further evaporated and separated to increase the 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. Here, as shown in FIG. 2, the relationship between the absorption temperature of the high-temperature regenerator (1) and the frequency is switched according to the cooling water inlet temperature. FIG. 2 shows a typical control line.
以上のように運転されている吸収冷凍機の停止時、ガ
スバーナ（1B）の燃焼が停止すると、高温再生器（１）
の吸収液温度（T1）が低下すると共に、高温再生器
（１）内の圧力が急激に低下する。そして、第１温度セ
ンサ（31）が高温再生器（１）の吸収液温度（T1）を検
出し、回転数制御装置（33）が第１温度センサ（31）か
らの信号に基づいて動作し、吸収液温度（T1）の低下に
応じて、起動時より低い第２図の冷却水入口温度32℃の
ときの制御ライン（Ａ）に沿った周波数の電力を吸収液
ポンプ（15）へ出力する。そして、吸収液ポンプ（15）
の回転数が吸収液温度（T1）の低下に伴い急激に低下
し、高温再生器（１）へ流れる吸収液の量が急激に減少
する。When the absorption chiller operated as described above is stopped and the combustion of the gas burner (1B) is stopped, the high-temperature regenerator (1)
With the absorption liquid temperature (T 1) is lowered, the pressure of the high-temperature regenerator (1) inside is rapidly lowered. Then, the first temperature sensor (31) detects the absorption liquid temperature (T 1 ) of the high temperature regenerator (1), and the rotation speed control device (33) operates based on the signal from the first temperature sensor (31). Then, in response to the decrease in the absorption liquid temperature (T 1 ), the electric power of the frequency along the control line (A) at the time of the cooling water inlet temperature of 32 ° C. shown in FIG. Output to And the absorption liquid pump (15)
The number of rotations rapidly decreases with a decrease in the absorption liquid temperature (T 1 ), and the amount of the absorption liquid flowing to the high-temperature regenerator (1) rapidly decreases.
上記のように、吸収液温度（T1）の低下に伴う高温再
生器（１）へ流れる吸収液の量が減少し、吸収液温度
（T1）が所定温度（例えば120℃）以下になると、第１
温度センサ（31）からの信号に基づいて回転数制御装置
（33）が動作する。そして、第２図の制御ライン（Ｂ）
に示したように吸収液温度（T1）に関係なく、回転数制
御回路（33）が最低周波数（例えば30Hz）の電力を吸収
液ポンプ（15）へ出力する。そして、吸収液ポンプ（1
5）の回転数が最低回転数に保たれ、吸収液が吸収器
（５）から高温再生器（１）へ送られる。その後、吸収
液温度が例えば95℃以下になるまで吸収液ポンプ（15）
の回転数が最低回転数に保たれ、稀釈運転が行われる。
そして、所定時間経過すると、吸収液ポンプ（15）が停
止し、吸収冷凍機の運転が停止する。又、吸収冷凍機の
通常運転時における高温再生器（１）の加熱停止時に
も、上記と同様に回転数制御装置（33）が動作し、吸収
液ポンプ（15）の回転数が加熱開始時より低く制御され
る。As described above, the amount of absorption liquid flowing into the absorption liquid temperature (T 1) the high temperature generator with decreasing (1) is reduced, the absorption liquid temperature (T 1) when is equal to or lower than a predetermined temperature (e.g. 120 ° C.) , First
The rotation speed control device (33) operates based on a signal from the temperature sensor (31). Then, the control line (B) in FIG.
As shown in ( 1 ), the rotation speed control circuit (33) outputs electric power of the lowest frequency (for example, 30 Hz) to the absorbent pump (15), regardless of the absorbent temperature (T 1 ). Then, the absorbent pump (1
The rotation speed of 5) is kept at the minimum rotation speed, and the absorbing liquid is sent from the absorber (5) to the high-temperature regenerator (1). After that, the absorbent pump (15) until the absorbent temperature falls to, for example, 95 ° C or less
Is maintained at the minimum speed, and the dilution operation is performed.
Then, after a lapse of a predetermined time, the absorption liquid pump (15) stops, and the operation of the absorption refrigerator stops. Also, when the heating of the high-temperature regenerator (1) is stopped during the normal operation of the absorption refrigerator, the rotation speed control device (33) operates in the same manner as described above, and the rotation speed of the absorption liquid pump (15) is reduced when the heating starts. Controlled lower.
上記本発明の実施例によれば、吸収冷凍機の停止時等
の高温再生器（１）の加熱停止時、回転数制御回路（3
3）が動作し、吸収液ポンプ（15）が入力する電力の周
波数が吸収液温度の低下に伴い低下し、且つ、電力の周
波数が高温再生器（１）の加熱開始時より低く制御さ
れ、吸収液ポンプ（15）の回転数が急激に低下して高温
再生器（１）へ送られる吸収液の量が急激に少なくなる
ため、高温再生器（１）内の圧力が急激に低下した場合
にも、高温再生器（１）の吸収液面が高くなることを回
避でき、吸収液が高温再生器（１）から凝縮器（３）へ
流れ、冷媒に混入することを防止できる。According to the embodiment of the present invention, when the heating of the high-temperature regenerator (1) is stopped, for example, when the absorption refrigerator is stopped, the rotation speed control circuit (3
3) operates, the frequency of the electric power input to the absorbent pump (15) decreases with a decrease in the temperature of the absorbent, and the frequency of the electric power is controlled to be lower than when the heating of the high temperature regenerator (1) is started; When the pressure in the high-temperature regenerator (1) drops sharply because the rotation speed of the absorbent pump (15) decreases rapidly and the amount of the absorbing liquid sent to the high-temperature regenerator (1) decreases rapidly. In addition, it is possible to prevent the absorption liquid level of the high-temperature regenerator (1) from becoming high, and to prevent the absorption liquid from flowing from the high-temperature regenerator (1) to the condenser (3) and being mixed into the refrigerant.
又、高温再生器（１）の吸収液温度が所定温度以下に
なり、高温再生器（１）の吸収液面高の心配がなくなっ
てからは、回転数制御装置（33）から出力される電力の
周波数が最低周波数に制御され、吸収液ポンプ（15）の
回転数が最低回転数に保たれるため、吸収液が高温再生
器（１）に循環し、稀釈運転を確実に行うことができ、
結晶の発生を防止することができる。Further, after the temperature of the absorbent in the high-temperature regenerator (1) becomes lower than the predetermined temperature and the fear of the height of the absorbent in the high-temperature regenerator (1) disappears, the electric power output from the rotation speed controller (33) is reduced. Is controlled to the lowest frequency and the rotation speed of the absorbent pump (15) is kept at the minimum speed, so that the absorbent circulates to the high-temperature regenerator (1) and the dilution operation can be performed reliably. ,
Crystal generation can be prevented.
尚、上記実施例において、シリーズフロー方式の吸収
冷凍機について説明したが、高温再生器（１）と低温再
生器（２）とが並列に設けられたパラレルフロー方式の
吸収冷凍機においても、停止時、上記実施例と同様に吸
収液ポンプの回転数を制御することにより、同様の作用
効果を得ることができる。In the above embodiment, a series flow type absorption refrigerator has been described. However, a parallel flow type absorption refrigerator in which a high temperature regenerator (1) and a low temperature regenerator (2) are provided in parallel is also stopped. At this time, the same operation and effect can be obtained by controlling the rotation speed of the absorbing liquid pump as in the above embodiment.
（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であり、
再生器の加熱停止時、再生器の吸収液温度が所定温度よ
り高いときには、再生器の吸収液温度に基づいて回転数
制御装置が動作し、吸収液ポンプの回転数を加熱開始時
より低く制御することにより、再生器内の圧力変化が速
い停止時には吸収液ポンプから再生器へ送られる吸収液
の量を速く減少させることができ、再生器の吸収液面
高、及び、吸収液の冷媒への混入を防止することができ
る。(G) Effects of the Invention The present invention is an absorption refrigerator configured as described above,
When heating of the regenerator is stopped and the temperature of the absorbent in the regenerator is higher than a predetermined temperature, the rotation speed control device operates based on the temperature of the absorbent in the regenerator to control the rotation speed of the absorbent pump to be lower than at the start of heating. By doing so, when the pressure change in the regenerator is stopped quickly, the amount of the absorbing liquid sent from the absorbing pump to the regenerator can be reduced quickly, and the absorbing liquid level of the regenerator and the absorbing liquid refrigerant can be reduced. Contamination can be prevented.
又、加熱停止時、再生器の吸収液温度が低下して所定
温度以下になったときには、回転数制御装置が動作し、
吸収液ポンプの回転数を所定回転数一定に制御すること
により、停止時の稀釈運転を確実に行うことができ、結
晶の発生を防止することができる。Also, when the heating is stopped, when the temperature of the absorbent in the regenerator falls to a predetermined temperature or less, the rotation speed control device operates,
By controlling the number of revolutions of the absorbent pump to be constant at a predetermined number of revolutions, the dilution operation at the time of stop can be reliably performed, and the generation of crystals can be prevented.
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図は吸収液温度と吸収液ポンプへ送られる電力
の周波数との関係図である。 （１）……高温再生器、（５）……吸収器、（15）……
吸収液ポンプ、（33）……回転数制御装置。FIG. 1 is a circuit diagram of an absorption refrigerator showing one embodiment of the present invention, and FIG. 2 is a diagram showing a relationship between an absorption liquid temperature and a frequency of electric power sent to an absorption liquid pump. (1) High temperature regenerator (5) Absorber (15)
Absorbent pump, (33) ... Rotation speed control device.
Claims (2)
ンプを備えた吸収冷凍機において、吸収液ポンプの回転
数を再生器内の吸収液温度と回転数との間に吸収液温度
が高い方で回転数が高くなるように予め定めた関係に基
づいて連続的に変えると共に、この関係は少なくとも再
生器の加熱開始の際に用いる関係と再生器の加熱停止の
際に用いる関係とを備え、これら両関係の間には再生器
の加熱停止の際に再生器の吸収液温度が所定温度より高
いときには同一の吸収液温度で再生器の加熱停止の際に
用いる関係から得られる吸収液ポンプの回転数より再生
器の加熱開始の際に用いる関係から得られる吸収液ポン
プの回転数が高く設定されている回転数制御装置を備え
たことを特徴とする吸収冷凍機。In an absorption refrigerator having an absorption pump for sending an absorption liquid from an absorber to a regenerator, the number of revolutions of the absorption pump is adjusted between the temperature of the absorption liquid in the regenerator and the number of revolutions of the absorption liquid. Is continuously changed based on a predetermined relationship such that the rotation speed becomes higher in a higher direction, and this relationship is at least a relationship used when starting heating of the regenerator and a relationship used when stopping heating of the regenerator. When the heating of the regenerator is stopped, the absorption obtained from the relationship used when the heating of the regenerator is stopped at the same absorption liquid temperature when the absorption liquid temperature is higher than a predetermined temperature is provided between these two relations. An absorption refrigerator comprising a rotation speed control device in which the rotation speed of the absorption liquid pump obtained from the relationship used when starting heating of the regenerator is set higher than the rotation speed of the liquid pump.
生器の加熱停止の際に用いる関係は、再生器内の吸収液
温度が所定温度より低いときは吸収液ポンプの回転数を
所定回転数に保つことを特徴とする吸収冷凍機。2. The absorption chiller according to claim 1, wherein the relationship used when the heating of the regenerator is stopped is such that when the temperature of the absorbent in the regenerator is lower than a predetermined temperature, the number of revolutions of the absorbent pump is set to a predetermined value. An absorption refrigerator characterized by maintaining the rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63314344A JP2744034B2 (en) | 1988-12-13 | 1988-12-13 | Absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63314344A JP2744034B2 (en) | 1988-12-13 | 1988-12-13 | Absorption refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02161264A JPH02161264A (en) | 1990-06-21 |
| JP2744034B2 true JP2744034B2 (en) | 1998-04-28 |
Family
ID=18052198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63314344A Expired - Lifetime JP2744034B2 (en) | 1988-12-13 | 1988-12-13 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2744034B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3283780B2 (en) * | 1997-03-03 | 2002-05-20 | リンナイ株式会社 | Absorption cooling device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6141855A (en) * | 1984-08-03 | 1986-02-28 | 三洋電機株式会社 | Absorption refrigerator |
-
1988
- 1988-12-13 JP JP63314344A patent/JP2744034B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02161264A (en) | 1990-06-21 |
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