JPH02166360A - Absorption refrigerator - Google Patents
Absorption refrigeratorInfo
- Publication number
- JPH02166360A JPH02166360A JP32108688A JP32108688A JPH02166360A JP H02166360 A JPH02166360 A JP H02166360A JP 32108688 A JP32108688 A JP 32108688A JP 32108688 A JP32108688 A JP 32108688A JP H02166360 A JPH02166360 A JP H02166360A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- absorption liquid
- regenerator
- rotation speed
- absorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 142
- 239000007788 liquid Substances 0.000 claims abstract description 125
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 239000000498 cooling water Substances 0.000 claims description 20
- 239000006096 absorbing agent Substances 0.000 claims description 18
- 239000013078 crystal Substances 0.000 abstract description 10
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 230000000630 rising effect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 7
- 230000002745 absorbent Effects 0.000 description 6
- 239000002250 absorbent Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Landscapes
- Sorption Type Refrigeration Machines (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は吸収液ポンプの回転数を制御する回転数制御装
置を備えた吸収冷凍機に関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an absorption refrigerator equipped with a rotation speed control device for controlling the rotation speed of an absorption liquid pump.
（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高温再生器の吸収液温度等の物
理量に基づいて吸収液ポンプの回転数が制御きれる吸収
冷凍機が開示されている。(b) Conventional technology For example, Japanese Patent Publication No. 58-51577 describes an absorption system in which the rotational speed of an absorption liquid pump can be controlled based on physical quantities such as the temperature of the absorption liquid in a high-temperature regenerator, which changes in accordance with changes in the chilled water load. A refrigerator is disclosed.
（八）発明が解決しようとする課題
上記従来の技術において、吸収冷凍機の起動時、高温再
生器の加熱開始直後から、吸収液温度の上昇に伴い吸収
液ポンプの回転数を上昇させた場合には、吸収液温度の
上昇が遅くなり、起動時間が長くなるという問題が発生
していた。又、高温再生器の吸収液の温度が上昇し、例
えば１００°Ｃより高くなってからは、吸収液の温度上
昇が速くなり、吸収液温度の上昇に対して高温再生器へ
送られる吸収液の量が少ない場合には、吸収液面が低下
し、結晶が発生する虞れがあった。(8) Problems to be Solved by the Invention In the above conventional technology, when the rotation speed of the absorption liquid pump is increased as the absorption liquid temperature rises immediately after the start of heating of the high temperature regenerator when the absorption chiller is started. However, there was a problem in that the temperature of the absorption liquid rose slowly and the start-up time became longer. Furthermore, when the temperature of the absorption liquid in the high-temperature regenerator increases, for example, after it becomes higher than 100°C, the temperature of the absorption liquid increases faster, and the absorption liquid sent to the high-temperature regenerator increases as the temperature of the absorption liquid increases. If the amount is small, there is a risk that the absorption liquid level will drop and crystals will occur.
本発明は、吸収冷凍機の起動時の立ち上りを良くすると
共に、高温再生器の吸収液面の低下を回避し、結晶の発
生を防止することを目的とする。An object of the present invention is to improve the start-up of an absorption refrigerator, to avoid a drop in the level of absorption liquid in a high-temperature regenerator, and to prevent the generation of crystals.
（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（
５）から高温再生器（１）へ送る吸収液ポンプ（１５）
を備えた吸収冷凍機において、高温再生器（１）の加熱
開始後吸収液ポンプ（１５）の回転数を所定の回転数に
制御し、高温再生器（１）の吸収液温度が所定の温度に
なってからは高温再生器（１）の吸収液温度に基づいて
吸収液ポンプ（１５）の回転数を変化させる回転数制御
装置（３３）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 aims to transfer the absorption liquid to an absorber (
Absorption liquid pump (15) that sends from 5) to the high temperature regenerator (1)
In an absorption refrigerator equipped with a high-temperature regenerator (1), after the heating of the high-temperature regenerator (1) is started, the rotation speed of the absorption liquid pump (15) is controlled to a predetermined rotation speed, so that the absorption liquid temperature of the high-temperature regenerator (1) reaches a predetermined temperature. Since then, an absorption refrigerator has been provided that is equipped with a rotation speed control device (33) that changes the rotation speed of an absorption liquid pump (15) based on the absorption liquid temperature of a high-temperature regenerator (1).
又、吸収液を吸収器（５）から高温再生器（１）へ送る
吸収液ポンプ（１５）を備えた吸収冷凍機において、高
温再生器（１）の加熱開始後、所定時間高温再生器（１
）の吸収液温度に基づいて吸収液ポンプ（１５）の回転
数を変化させ、且つ、所定時間経過後は、高温再生器（
１）の吸収液温度と冷却水入口温度とに基づいて吸収液
ポンプ（１５）の回転数を変化される回転数制御装置（
３３）とを備えた吸収冷凍機を提供するものである。Further, in an absorption refrigerator equipped with an absorption liquid pump (15) that sends the absorption liquid from the absorber (5) to the high temperature regenerator (1), after the heating of the high temperature regenerator (1) is started, the high temperature regenerator (1) is operated for a predetermined period of time. 1
) The rotation speed of the absorption liquid pump (15) is changed based on the absorption liquid temperature of the high temperature regenerator (
A rotation speed control device (1) that changes the rotation speed of the absorption liquid pump (15) based on the absorption liquid temperature and the cooling water inlet temperature.
33).
さらに、吸収液を吸収器（５）から高温再生器（１）へ
送る吸収液ポンプ（１５）を備えた吸収冷凍機において
、高温再生器（１）の加熱開始時、吸収器（５）の吸収
液温度に基づいて吸収液ポンプ（１５）の回転数を加熱
停止時の回転数より高く制御する回転数制御装置（３３
）を備えた吸収冷凍機を提供するものである。Furthermore, in an absorption refrigerator equipped with an absorption liquid pump (15) that sends absorption liquid from the absorber (5) to the high-temperature regenerator (1), when the high-temperature regenerator (1) starts heating, the absorber (5) A rotation speed control device (33) that controls the rotation speed of the absorption liquid pump (15) to be higher than the rotation speed when heating is stopped based on the absorption liquid temperature.
) is provided.
（ホ）作用
吸収冷凍機の運転開始時、又は運転開始後の通常運転時
の高温再生器（１）の加熱開始時、回転数制御装置（３
３）の動作により、高温再生器（１）の吸収液温度が所
定温度（例えば９５°Ｃ）になるまで、吸収液ポンプ（
１５）の回転数が所定回転数に抑えられ、高温再生器（
１）の加熱開始時、高温再生器（１）へ送られる吸収液
の量が少なくなり、吸収液温度の上昇が速くなり、立ち
上り時間を短縮することが可能になる。又、吸収液温度
が所定温度になってからは吸収液ポンプ（１５）の回転
数が吸収液温度に応じて変化し、高温再生器（１）での
吸収液面の低の発生、結晶の発生を防止することが可能
になる。(E) At the start of operation of the effect absorption refrigerator or at the start of heating of the high temperature regenerator (1) during normal operation after the start of operation, the rotation speed control device (3
By the operation of 3), the absorption liquid pump (
15) is suppressed to a predetermined number of rotations, and the high temperature regenerator (
At the start of heating in step 1), the amount of absorption liquid sent to the high temperature regenerator (1) is reduced, the temperature of the absorption liquid increases faster, and the rise time can be shortened. In addition, after the temperature of the absorption liquid reaches a predetermined temperature, the rotation speed of the absorption liquid pump (15) changes depending on the temperature of the absorption liquid, causing the absorption liquid level to become low in the high temperature regenerator (1) and crystal formation. It becomes possible to prevent the occurrence.
又、加熱開始後、所定時間経過してからは、吸収液ポン
プ（１５）の回転数が高温再生器（１）の吸収液温度と
冷却水入口温度とに応じて制御され、季節の変化、冷却
塔の発停等により冷却水入口温度が変化した場合にも、
それぞれの温度に応じた量の吸収液を高温再生器（１）
へ送ることが可能になり、吸収冷凍機の加熱開始後の成
績係数を向上させることが可能になる。Moreover, after a predetermined period of time has elapsed after the start of heating, the rotation speed of the absorption liquid pump (15) is controlled according to the absorption liquid temperature of the high temperature regenerator (1) and the cooling water inlet temperature, and seasonal changes, Even if the cooling water inlet temperature changes due to the cooling tower starting or stopping, etc.
A high-temperature regenerator (1) absorbs the amount of absorption liquid according to each temperature.
This makes it possible to improve the coefficient of performance after the absorption chiller starts heating.
さらに、加熱開始時の高温再生器（１）の吸収液温度に
基づく吸収液ポンプ（１５）の回転数が加熱停止時より
高く制御きれ、吸収液温度の上昇が速い加熱開始時に高
温再生器（１）で吸収液面低、又は結晶が発生すること
を一層確実に防止することが可能になる。Furthermore, the rotational speed of the absorption liquid pump (15) based on the temperature of the absorption liquid in the high temperature regenerator (1) at the start of heating can be controlled to be higher than that at the time of stopping heating. In 1), it becomes possible to more reliably prevent the absorption liquid level from becoming low or from generating crystals.
（へ）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 based on 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（Ｈ，Ｏ）を、吸収剤（吸収液）に臭化リチウム（
ＬｉＢｒ）水溶液を使用したものである。The one shown in Figure 1 is a dual-effect absorption refrigerator, in which water (H, O) is used as the refrigerant, and lithium bromide (
LiBr) aqueous solution was used.
第１図において、（１）はガスバーナ（ＩＢ）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）ないしく１２）は吸収
液配管、（１５）は吸収液ポンプ、（１６）ないしく１
８）は冷媒配管、（１９）は冷媒ポンプ、（２０）はガ
スバーナ（ＩＢ）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きれている。In Figure 1, (1) is a high temperature regenerator equipped with a gas burner (IB), (2) is a low temperature regenerator, (3) is a condenser, (
4) is the evaporator, (5) is the absorber, (6) is the low temperature heat exchanger, (7) is the high temperature heat exchanger, (8) or 12) is the absorption liquid piping, and (15) is the absorption liquid pump. , (16) or 1
8) is a refrigerant pipe, (19) is a refrigerant pump, (20) is a gas pipe connected to a gas burner (IB), (21) is a heating amount control valve, and (22) is a cold water pipe, each of which is connected to the first The piping connections are broken as shown in the diagram.
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。さらに、冷却水配管
（２５）は冷却塔（図示せず）、及び冷却水ポンプ（図
示せず）に接続され、冷却水循環回路が構成されている
。（３１）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（以後第１温度セン
サという）、（３２）は高温再生器（１）に設けられた
吸収液温度検出器（以後第２温度センサという）、（３
３）は第１．第２温度センサ（３１） 、 （３２）か
らの信号を入力して動作し、温度信号により決まる周波
数の重力を吸収液ポンプ（１５）へ出力する回転数制御
装置である。そして、回転数制御装置（３３）には、吸
収冷凍機の起動時に出力する電力の周波数が第２図にラ
イン（Ａ） 、 （Ｂ）にて示したように設定きれてい
る。又、回転数制御装置（３３〉には、通常の運転時に
出力する電力の周波数が冷却水入口温度に応じて設定さ
れている。In addition, (25) is a cooling water pipe, and this cooling water pipe (2
5) is provided with an absorber heat exchanger (26) and a condenser heat exchanger (27). Further, the cooling water pipe (25) is connected to a cooling tower (not shown) and a cooling water pump (not shown), thereby forming a cooling water circulation circuit. (31) is a cooling water inlet temperature sensor (hereinafter referred to as the first temperature sensor) installed on the absorber (5) inlet side of the cooling water pipe (25), and (32) is installed in the high temperature regenerator (1). absorbing liquid temperature sensor (hereinafter referred to as the second temperature sensor), (3
3) is the first. This is a rotational speed control device that operates by inputting signals from the second temperature sensors (31) and (32) and outputs gravity at a frequency determined by the temperature signals to the absorption liquid pump (15). In the rotational speed control device (33), the frequency of the power output at the time of startup of the absorption refrigerator is fully set as shown by lines (A) and (B) in FIG. Further, in the rotation speed control device (33), the frequency of the power output during normal operation is set according to the cooling water inlet temperature.
ここで、冷却水入口温度が２２°Ｃのときの重力の周波
数が起動時と同じになり、冷却水入口温度が３２℃のと
きの電力の周波数が停止時の周波数であるライン（Ｃ）
と同じになる。Here, the frequency of gravity when the cooling water inlet temperature is 22°C is the same as that at startup, and the frequency of power when the cooling water inlet temperature is 32°C is the frequency at stop (line (C))
becomes the same as
以下、吸収冷凍機の起動時の動作について説明する。吸
収冷凍機の起動時、ガスバーナ（ＩＢ）が燃焼して吸収
液の加熱が始まる。又、回転数制御装置（３３）が動作
し、第２図に示したライン（Ａ）の周波数（例えば３０
Ｈｚ）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）の回転数が低く制御され、吸
収器（５）から高温再生器（１）へ流れる吸収液が少な
く制限される。時間の経過に伴い高温再生器（１）の吸
収液温度が上昇して例えば９５°Ｃより高くなると、回
転数制御装置（３３）が第２温度センサ（３２）からの
信号に基づいて動作する。そして、第２図のライン（Ｂ
）にて示したように、回転数制御装置（３３）が出力す
る電力の周波数が吸収液温度の上昇に伴い上昇する。こ
のとき、上記周波数が吸収冷凍機の停止時より高くなり
、吸収液ポンプ（１５）の回転数が高くなり、吸収器（
５）から高温再生器（１）へ送られる吸収液の量が停止
時より多くなる。The operation of the absorption refrigerator at startup will be described below. When the absorption refrigerator starts up, the gas burner (IB) burns and starts heating the absorption liquid. Also, the rotation speed control device (33) operates, and the frequency of line (A) shown in FIG. 2 (for example, 30
Hz) is output to the absorption liquid pump (15). The rotation speed of the absorption liquid pump (15) is controlled to be low, and the amount of absorption liquid flowing from the absorber (5) to the high temperature regenerator (1) is limited. When the temperature of the absorption liquid in the high temperature regenerator (1) rises over time and becomes higher than, for example, 95°C, the rotation speed control device (33) operates based on the signal from the second temperature sensor (32). . Then, line (B
), the frequency of the power output by the rotational speed control device (33) increases as the absorption liquid temperature increases. At this time, the frequency becomes higher than when the absorption refrigerator is stopped, the rotation speed of the absorption liquid pump (15) becomes high, and the absorber (
The amount of absorption liquid sent from 5) to the high-temperature regenerator (1) is larger than when it is stopped.
その後、高温再生器（１）の吸収液温度の上昇に伴い、
回転数制御装置（３３）が出力する電力の周波数が上昇
し、吸収器（５）から高温再生器（１）へ送られる吸収
液の量が増加する。そして、高温再生器（１）の加熱が
始まってから所定時間、例えば１５分経過すると回転数
制御装置（３３）が動作し、高温再生器（１）の吸収液
温度と第１温度センサ（３１）が検出した吸収器（５）
の冷却水入口温度とにより決まる周波数の電力を吸収液
ポンプ（１５）へ出力する。ここで、第２図から明らか
なように高温再生器（１）の加熱量が例えば６０％で一
定のときには、第２図に示したように冷却水入口温度が
高くなり、吸収液温度が高くなるのに伴い回転数制御装
置（３３）が出力する電力の周波数が高くなり、吸収器
（５）から高温再生器（１）へ流れる吸収液の量が増加
する。又、冷却水入口温度が低下した場合には、それに
伴い回転数制御装置（３３）が出力する電力の周波数が
低くなり、高温再生器（１）へ送られる吸収液の量が減
少する。After that, as the temperature of the absorption liquid in the high-temperature regenerator (1) increases,
The frequency of the power output by the rotation speed control device (33) increases, and the amount of absorption liquid sent from the absorber (5) to the high temperature regenerator (1) increases. Then, when a predetermined period of time, for example, 15 minutes has passed since the heating of the high temperature regenerator (1) has started, the rotation speed control device (33) operates, and the absorption liquid temperature of the high temperature regenerator (1) and the first temperature sensor (31 ) detected absorber (5)
The absorbent pump (15) outputs power at a frequency determined by the cooling water inlet temperature of the absorbent pump (15). Here, as is clear from Fig. 2, when the heating amount of the high-temperature regenerator (1) is constant at 60%, for example, the cooling water inlet temperature becomes high as shown in Fig. 2, and the absorption liquid temperature becomes high. Accordingly, the frequency of the power output by the rotation speed control device (33) increases, and the amount of absorption liquid flowing from the absorber (5) to the high temperature regenerator (1) increases. Further, when the cooling water inlet temperature decreases, the frequency of the power output by the rotation speed control device (33) decreases accordingly, and the amount of absorption liquid sent to the high temperature regenerator (1) decreases.
上記のように、吸収冷凍機の運転中、吸収液ポンプ（１
５）の回転数が制御され、高温再生器（１）へ送られる
吸収液の量が制御きれる。又、吸収冷凍機の停止時、ガ
スバーナ（ＩＢ）の燃焼が停止すると、回転数制御装置
（３３）が動作し、高温再生器（１）の吸収液温度の低
下に応じて、第２図のライン（Ｃ）にて示したように、
回転数制御装置（３３）が出力する電力の周波数が減少
する。ここで、停止時の周波数は起動時の周波数より低
く制御され、高温再生器（１）の吸収液温度の低下に伴
い急激に低下する。そして、吸収液温度が例えば１２０
℃以下になると、周波数は最小周波数の３０Ｈｚで一定
に保たれ稀釈運転が行われる。その後、所定時間経過す
ると、回転数制御装置（３３）が動作して出力が停止し
、吸収液ポンプ（１５）が停止する。As mentioned above, during operation of the absorption refrigerator, the absorption liquid pump (1
5) is controlled, and the amount of absorption liquid sent to the high temperature regenerator (1) can be controlled. In addition, when the absorption chiller is stopped and the combustion of the gas burner (IB) is stopped, the rotation speed control device (33) operates, and according to the decrease in the temperature of the absorption liquid in the high-temperature regenerator (1), the As shown in line (C),
The frequency of the power output by the rotation speed control device (33) decreases. Here, the frequency at the time of stopping is controlled to be lower than the frequency at the time of starting, and rapidly decreases as the temperature of the absorption liquid in the high temperature regenerator (1) decreases. Then, the absorption liquid temperature is, for example, 120
When the temperature drops below .degree. C., the frequency is kept constant at the minimum frequency of 30 Hz and dilution operation is performed. Thereafter, after a predetermined period of time has elapsed, the rotation speed control device (33) operates to stop the output, and the absorption liquid pump (15) stops.
上記実施例によれば、吸収冷凍機の起動時等の高温再生
器（１）の加熱開始時高温再生器（１）の吸収液温度が
９５°Ｃになるまで、回転数制御装置（３３）が最低周
波数の電力を吸収液ポンプ（１５）へ出力するため、吸
収液ポンプ（１５）の回転数が低く抑えられ、高温再生
器（１）へ送られる吸収液の量を少なく抑えることがで
き、高温再生器（１）での吸収液の温度上昇を速くし、
立ち上り特性を良くし、起動時間を短縮することができ
る。According to the above embodiment, when the high temperature regenerator (1) starts heating, such as when starting up the absorption refrigerator, the rotation speed control device (33) outputs the lowest frequency power to the absorption liquid pump (15), so the rotation speed of the absorption liquid pump (15) can be kept low, and the amount of absorption liquid sent to the high temperature regenerator (1) can be kept low. , speed up the temperature rise of the absorption liquid in the high temperature regenerator (1),
The start-up characteristics can be improved and the startup time can be shortened.
又、高温再生器（１）の吸収液温度が９５℃より高くな
ってからは、回転数制御回路（３３）が出力する電力の
周波数が吸収液温度の上昇に応じて高くなり、吸収液ポ
ンプ（１５）の回転数が増加し、高温再生器（１）へ送
られる吸収液の量が増加し、高温再生器（１）での吸収
液面低の発生、及び、結晶の発生を防止することができ
る。さらに、高温再生器（１）の加熱開始後、所定時間
経過してからは、吸収液ポンプ（１５）へ送られる電力
の周波数を高温再生器（１）の吸収液温度と、冷却水入
口温度とに基づいて制御し、吸収液ポンプ（１５）の回
転数を変化させるため、加熱開始後、吸収液温度ばかり
でなく、冷却水入口温度に応じて高温再生器（１）へ送
られる吸収液の量を制御することができ、加熱開始後の
通常運転時の吸収冷凍機の成績係数（Ｃ。Furthermore, after the temperature of the absorption liquid in the high-temperature regenerator (1) becomes higher than 95°C, the frequency of the power output by the rotation speed control circuit (33) increases in accordance with the rise in the temperature of the absorption liquid, and the absorption liquid pump (15) increases, the amount of absorption liquid sent to the high-temperature regenerator (1) increases, and the occurrence of a low level of absorption liquid and the generation of crystals in the high-temperature regenerator (1) is prevented. be able to. Furthermore, after a predetermined period of time has elapsed after the start of heating of the high temperature regenerator (1), the frequency of the electric power sent to the absorption liquid pump (15) is adjusted to match the absorption liquid temperature of the high temperature regenerator (1) and the cooling water inlet temperature. After heating starts, the absorption liquid sent to the high temperature regenerator (1) is controlled based on not only the absorption liquid temperature but also the cooling water inlet temperature. The coefficient of performance (C) of the absorption chiller during normal operation after the start of heating can be controlled.
０、Ｐ）を向上させることができる。0, P) can be improved.
さらに、高温再生器（１）の加熱開始時、回転数制御装
置（３３）から出力される電力の周波数を加熱停止時よ
り高く制御し、停止時より温度上昇が速い起動時の吸収
液ポンプ（１５）の回転数を停止時より高くしているた
め、高温再生器（１）へ送られる吸収液の量を停止時よ
り多くすることができ、加熱開始時の吸収液面低の発生
、及び結晶の発生を確実に防止することができる。Furthermore, when heating the high-temperature regenerator (1) starts, the frequency of the power output from the rotation speed control device (33) is controlled to be higher than when heating is stopped, and the absorption liquid pump ( 15) is set higher than when stopped, the amount of absorption liquid sent to the high-temperature regenerator (1) can be increased compared to when stopped, which prevents occurrence of low absorption liquid level at the start of heating, Generation of crystals can be reliably prevented.
尚、上記実施例において、シリーズフロ一方式の吸収冷
凍機について説明したが、吸収器から吸収液を高温再生
器と低温再生器へ並列に流すパラレルフロ一方式の吸収
冷凍機においても、上記実施例と同様に、加熱開始時、
高温再生器の吸収液温度に応じて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 embodiments, a series-flow one-type absorption refrigerator was explained, but the above implementation can also be applied to a parallel-flow one-type absorption refrigerator in which the absorbent flows from the absorber to a high-temperature regenerator and a low-temperature regenerator in parallel. As in the example, at the start of heating,
Similar effects can be obtained by controlling the rotation speed of the absorption liquid pump according to the absorption liquid temperature of the high temperature regenerator.
（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
生器の加熱開始後吸収液ポンプの回転数を所定の回転数
に制御し、再生器の吸収液温度が所定温度になってから
は、吸収液ポンプの回転数を吸収液温度に応じて変化さ
せるため、吸収液温度が所定温度になるまでの時間を短
縮して立ち上り特性を向上させることができ、又、所定
温度になってからは吸収液温度の上昇に応じて再生器へ
送られる吸収液の量を増加させ、吸収液面低、及び結晶
の発生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, in which the rotational speed of the absorption liquid pump is controlled to a predetermined rotational speed after the heating of the regenerator is started, and the temperature of the absorption liquid in the regenerator is controlled to a predetermined rotational speed. After reaching a predetermined temperature, the rotational speed of the absorbent pump is changed according to the absorbent temperature, which shortens the time it takes for the absorbent temperature to reach a predetermined temperature and improves the start-up characteristics. After reaching a predetermined temperature, the amount of absorption liquid sent to the regenerator is increased in accordance with the rise in absorption liquid temperature, thereby making it possible to prevent the absorption liquid level from becoming low and from generating crystals.
又、再生器の加熱開始から所定時間経過してからは、吸
収液ポンプの回転数を吸収液温度と、吸収器の冷却水入
口温度とに応じて制御することにより、吸収冷凍機の成
績係数を向上させることができる。In addition, after a predetermined period of time has elapsed from the start of heating of the regenerator, the rotation speed of the absorption liquid pump is controlled according to the temperature of the absorption liquid and the temperature of the cooling water inlet of the absorber, thereby reducing the coefficient of performance of the absorption chiller. can be improved.
さらに、吸収液ポンプの回転数を加熱停止時の回転数よ
り高く制御することにより、加熱停止時より再生器の温
度変化が速い加熱開始時に、再生器へ送られる吸収液の
量を多くすることができ、再生器での吸収液面低、及び
結晶の発生を確実に防止することができる。Furthermore, by controlling the rotational speed of the absorption liquid pump to be higher than the rotational speed when heating is stopped, the amount of absorption liquid sent to the regenerator can be increased when heating starts, when the temperature of the regenerator changes faster than when heating is stopped. This makes it possible to reliably prevent the absorption liquid level from becoming low in the regenerator and the generation of crystals.
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図は吸収液温度と重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 configuration diagram of an absorption refrigerator showing an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between absorption liquid temperature and gravitational frequency. (1)...High temperature regenerator, (5)...Absorber, (
15)... Absorption liquid pump, (33)... Rotation speed control device.
Claims (1)
えた吸収冷凍機において、再生器の加熱開始後吸収液ポ
ンプの回転数を所定の回転数に制御し、再生器の吸収液
温度が所定温度になってから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を変化させる回転数制御装
置を備えたことを特徴とする吸収冷凍機。 ２、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、再生器の加熱開始後所定時間
再生器の吸収液温度に基づいて吸収液ポンプの回転数を
変化させ、且つ、所定時間経過後は再生器の吸収液温度
と冷却水入口温度とに基づいて吸収液ポンプの回転数を
変化させ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。 ３、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、再生器の加熱開始時、再生器
の吸収液温度に基づいて吸収液ポンプの回転数を加熱停
止時の回転数より高く制御す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。[Claims] 1. In an absorption refrigerator equipped with an absorption liquid pump that sends absorption liquid from the absorber to the regenerator, the rotational speed of the absorption liquid pump is controlled to a predetermined rotational speed after heating of the regenerator is started, 1. An absorption refrigerator comprising a rotation speed control device that changes the rotation speed of an absorption liquid pump based on the temperature of the absorption liquid in the regenerator after the temperature of the absorption liquid in the regenerator reaches a predetermined temperature. 2. In an absorption refrigerator equipped with an absorption liquid pump that sends the absorption liquid from the absorber to the regenerator, the rotation speed of the absorption liquid pump is changed based on the absorption liquid temperature of the regenerator for a predetermined period of time after the start of heating of the regenerator, An absorption refrigerator comprising a rotation speed control device that changes the rotation speed of the absorption liquid pump based on the absorption liquid temperature of the regenerator and the cooling water inlet temperature after a predetermined period of time has elapsed. 3. In an absorption refrigerator equipped with an absorption liquid pump that sends the absorption liquid from the absorber to the regenerator, the rotation speed of the absorption liquid pump is adjusted based on the temperature of the absorption liquid in the regenerator when the regenerator starts heating and when the heating stops. An absorption refrigerator characterized by being equipped with a rotation speed control device that controls the rotation speed higher than the rotation speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32108688A JPH02166360A (en) | 1988-12-20 | 1988-12-20 | Absorption refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32108688A JPH02166360A (en) | 1988-12-20 | 1988-12-20 | Absorption refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02166360A true JPH02166360A (en) | 1990-06-27 |
Family
ID=18128659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32108688A Pending JPH02166360A (en) | 1988-12-20 | 1988-12-20 | Absorption refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02166360A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851577U (en) * | 1981-10-05 | 1983-04-07 | 三菱電機株式会社 | earthing device |
| JPS58173356A (en) * | 1982-04-05 | 1983-10-12 | 松下電器産業株式会社 | Absorption type air conditioner |
| JPS61205757A (en) * | 1985-03-08 | 1986-09-11 | 三洋電機株式会社 | Absorption refrigerator |
-
1988
- 1988-12-20 JP JP32108688A patent/JPH02166360A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5851577U (en) * | 1981-10-05 | 1983-04-07 | 三菱電機株式会社 | earthing device |
| JPS58173356A (en) * | 1982-04-05 | 1983-10-12 | 松下電器産業株式会社 | Absorption type air conditioner |
| JPS61205757A (en) * | 1985-03-08 | 1986-09-11 | 三洋電機株式会社 | Absorption refrigerator |
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