JPH02161264A - Absorption refrigerating machine - Google Patents
Absorption refrigerating machineInfo
- Publication number
- JPH02161264A JPH02161264A JP31434488A JP31434488A JPH02161264A JP H02161264 A JPH02161264 A JP H02161264A JP 31434488 A JP31434488 A JP 31434488A JP 31434488 A JP31434488 A JP 31434488A JP H02161264 A JPH02161264 A JP H02161264A
- Authority
- JP
- Japan
- Prior art keywords
- absorption liquid
- temperature
- regenerator
- absorption
- liquid 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.)
- Granted
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 130
- 239000007788 liquid Substances 0.000 claims abstract description 121
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 239000006096 absorbing agent Substances 0.000 claims description 11
- 239000003507 refrigerant Substances 0.000 abstract description 18
- 239000000498 cooling water Substances 0.000 abstract description 13
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 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
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization 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。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field 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.
（ロン従来の技術
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一方式の吸収冷凍機が開
示されている。(Conventional technology, for example, Japanese Patent Publication No. 58-51577, describes the number of rotations for controlling the number of rotations of an absorption liquid pump based on a physical quantity (such as the temperature of the absorption liquid in a high-temperature regenerator) that changes in response to changes in the chilled water load. A parallel flow type absorption refrigerator equipped with a 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 conventional technology, when the heating of the high-temperature regenerator is stopped, the pressure inside the high-temperature regenerator is lower than the temperature of the absorption liquid after the heating of the high-temperature regenerator has stopped. decreases quickly, so if the rotational speed of the absorption liquid pump is controlled based on the temperature of the absorption liquid in the same way as when heating starts in the high-temperature regenerator, the rotational speed of the absorption liquid pump will be high and the absorption liquid will be sent to the high-temperature regenerator. The amount of absorption liquid increases. For this reason, there was a risk that the absorbing liquid level in the high temperature regenerator would rise and the absorbing liquid would 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。In addition, if the rotation speed of the absorption liquid pump is reduced in response to a decrease in the temperature of the high-temperature regenerator, the operating time of the absorption liquid pump at low rotation speed will be shortened, resulting in insufficient dilution operation time and the circulation of the absorption liquid. There was a risk that crystals of the absorption liquid would occur 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。The 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 also to ensure that the dilution operation is performed and prevent the generation of crystals in 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
（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
熱停止時、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）の回転数を高温
再生器（１）の吸収液温度に基づき、高温再生器（１）
の加熱開始時より低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。(d) Means for Solving the Problems In order to solve the above problems, the present invention provides an absorption liquid pump (15) that sends the absorption liquid from the absorber (5) to the high temperature regenerator (1).
), when the high-temperature regenerator (1) stops heating and the absorption liquid temperature of the high-temperature regenerator (1) is higher than a predetermined temperature, the rotation speed of the absorption liquid pump (15) is changed to the high-temperature regenerator (1). Based on the absorption liquid temperature in (1), high temperature regenerator (1)
A rotation speed control device (33) that controls the rotation speed to be lower than when heating starts.
The present invention provides an absorption refrigerator equipped with the following.
又、高温再生器（１）の加熱停止時、高温再生器（１）
の吸収液温度が所定温度以下のときには、吸収液ポンプ
（１５）の回転数を所定回転数に保つ回転数制御装置（
３３）を備えた吸収冷凍機を提供するものである。Also, when the heating of the high temperature regenerator (1) is stopped, the high temperature regenerator (1)
When the temperature of the absorption liquid is below a predetermined temperature, a rotation speed control device (
33).
（＊）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。(*) Effect When heating is stopped, such as when the absorption chiller stops operating, if the temperature of the absorption liquid in the high-temperature regenerator (1) is higher than the predetermined temperature, the rotation speed of the absorption liquid pump (15) is started based on the temperature of the absorption liquid. It is possible to reduce the amount of absorption liquid supplied to the high temperature regenerator (1) when heating is stopped and the temperature of the absorption liquid in the high temperature regenerator (1) quickly decreases, thereby avoiding a high absorption liquid level. This makes it 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。Furthermore, when the temperature of the absorption liquid in the high-temperature regenerator (1) falls below a predetermined temperature, the rotation speed of the absorption liquid pump (15) is kept constant at a predetermined rotation speed, and the temperature of the absorption liquid falls below a predetermined temperature. Also, the absorption liquid flows from the absorber (5) to the high temperature regenerator (1).
The dilution operation is carried out reliably, and it is possible to prevent the generation of crystals in the absorption liquid due to the stoppage of heating.
（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，０）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 the refrigerant is water (H,0) and the absorbent (absorbing liquid) is 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されている。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 is connected as shown in the figure.
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
（２５）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。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). A cooling tower and a cooling water pump (both not shown) are connected to the cooling water pipe (25).
are connected 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（１５）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（１
５〉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。Moreover, (31) is provided in the high temperature regenerator (1), and is an absorption liquid temperature detector (
(hereinafter referred to as the first temperature sensor), (32) is the cooling water pipe (
25) is a cooling water inlet temperature detector (hereinafter referred to as the second temperature sensor) provided on the inlet side of the absorber (5), (33) is a rotation speed control device; 1. Input temperature signals from the second temperature sensors (31) and (32), operate based on the respective temperature signals, and supply power at a predetermined frequency to the absorption liquid pump (15).Here, the rotation speed is controlled. As shown in Figure 2, the device (33) includes a high temperature regenerator (1) that changes depending on the cooling water inlet temperature.
Absorbing liquid temperature and frequency data are stored. Here, FIG. 2 shows the absorption liquid pump (1
5) shows the power frequency to the high temperature regenerator (
The relationship between absorbing liquid temperature and frequency in 1) can be expressed by a quadratic curve. When the cooling water inlet temperature rises and the absorption liquid temperature rises, the power frequency increases, and when the cooling water inlet temperature decreases and the absorption liquid temperature falls, the power frequency decreases.
又、吸収冷凍機の起動時、第２図の冷却水入口温度が２
２°Ｃのラインに沿って電力周波数が変化し、停止時、
３２°Ｃのラインに沿って電力周波数が変化する。Also, when starting up the absorption chiller, the cooling water inlet temperature in Figure 2 is 2.
The power frequency changes along the 2°C line, 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（ＩＢ）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）の吸収液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 operation of the absorption chiller, the refrigerant evaporated in the high temperature regenerator (1) flows through the low temperature regenerator (2) to the condenser (3), where it exchanges heat with the water flowing in the condenser heat exchanger (27). After being condensed and liquefied, it flows to the evaporator (4) via the refrigerant pipe (17). Then, the refrigerant liquid exchanges heat with the water in the cold water pipe (22) and evaporates, and the heat of vaporization cools the water in the cold water pipe (22).Then, the cold water is circulated to the load to perform cooling operation. In addition, the refrigerant evaporated in the evaporator (4) is absorbed by the absorption liquid in the absorber (5).Then, the absorption liquid whose concentration has become diluted by absorbing the refrigerant is used to operate the absorption liquid pump (15). The absorbent liquid is sent to the high-temperature regenerator (1) via the low-temperature heat exchanger (6) and the high-temperature heat exchanger (7).The absorbent liquid that has entered the high-temperature regenerator (1) is heated by the burner (IB), and the refrigerant is The evaporated medium-concentration absorbing liquid passes through the high-temperature heat exchanger (7) and enters the low-temperature regenerator (2).Then, the absorbing liquid passes through the high-temperature regenerator (1)
) is heated by the refrigerant vapor flowing through the refrigerant pipe (16), and the refrigerant is further evaporated and separated, increasing its concentration. The highly concentrated absorption liquid (hereinafter referred to as concentrated liquid) passes through a low-temperature heat exchanger (6) to lower its temperature, is sent to an absorber (5), and is sprayed. Here, as shown in FIG. 2, the relationship between the absorption liquid temperature and frequency of the high temperature regenerator (1) changes depending on the cooling water inlet temperature. Incidentally, 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（ＩＢ）の燃焼が停止すると、高温再生器（１〉
の吸収液温度（ｆｔ）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（３
１）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°Ｃ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 stops, when the combustion of the gas burner (IB) stops, the high temperature regenerator (1)
As the absorption liquid temperature (ft) decreases, the high temperature regenerator (ft) decreases.
1) The internal pressure drops rapidly. Then, the first temperature sensor (31) detects the absorption liquid temperature (T1) of the high temperature regenerator (1), and the rotation speed control device (33) detects the temperature of the absorption liquid (T1) of the high temperature regenerator (1).
1) operates based on the signal from the absorbing liquid temperature (T1).
In response to the decrease in temperature, power at a frequency along the control line (A) when the cooling water inlet temperature is 32° C. in FIG. 2, which is lower than at startup, is output to the absorption liquid pump (15). Then, the rotational speed of the absorption liquid pump (15) rapidly decreases as the absorption liquid temperature (T1) decreases, and the amount of absorption liquid flowing to the high temperature regenerator (1) rapidly decreases.
上記のように、吸収液温度（Ｔ、）の低下に伴い高温再
生器（１）へ流れる吸収液の量が減少し、吸収液温度（
ＩＩ）が所定温度（例えば１２０°Ｃ）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（Ｔ＋＞に関係なく
、回転数制御回路（３３）が最低周波数（例えば３０Ｈ
ｚ）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。As mentioned above, as the absorption liquid temperature (T, ) decreases, the amount of absorption liquid flowing to the high temperature regenerator (1) decreases, and the absorption liquid temperature (T, ) decreases.
II) becomes below a predetermined temperature (for example, 120°C),
The rotation speed control device (33) operates based on the signal from the first temperature sensor (31). As shown in the control line (B) in FIG. 2, regardless of the absorption liquid temperature (T+>), the rotation speed control circuit (33)
z) is outputted to the absorption liquid pump (15). Then, the rotational speed of the absorption liquid pump (15) is maintained at the minimum rotational speed, and the absorption liquid is sent from the absorber (5) to the high temperature regenerator (1). Thereafter, the rotational speed of the absorption liquid pump (15) is maintained at the minimum rotational speed until the absorption liquid temperature becomes, for example, 95° C. or lower,
A dilution run is performed. Then, after a predetermined period of time has elapsed, the absorption liquid pump (15) is stopped, and the operation of the absorption refrigerator is stopped.
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。In addition, the high temperature regenerator (1) during normal operation of the absorption chiller
When heating is stopped, the rotation speed control device (33
) is activated, and the rotational speed of the absorption liquid pump (15) is controlled to be lower than that at the start of heating.
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（３３
）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きれ
、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, such as when the absorption refrigerator is stopped, the rotation speed control circuit (33
) operates, the frequency of the power input to the absorption liquid pump (15) decreases as the temperature of the absorption liquid decreases, and the frequency of the power is controlled to be lower than when the high temperature regenerator (1) starts heating, and the absorption If the pressure inside the high-temperature regenerator (1) suddenly decreases because the rotational speed of the liquid pump (15) suddenly decreases and the amount of absorption liquid sent to the high-temperature regenerator (1) decreases rapidly. Also, it is possible to prevent the absorption liquid level in the high temperature regenerator (1) from becoming high, and it is possible to prevent the absorption liquid from flowing from the high temperature regenerator (1) to the condenser (3) and mixing with 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。Furthermore, after the temperature of the absorption liquid in the high-temperature regenerator (1) falls below a predetermined temperature and there is no need to worry about the level of the absorption liquid in the high-temperature regenerator (1), the power output from the rotation speed control device (33) decreases. The frequency of the absorption liquid pump (15) is controlled to the lowest frequency.
Since the rotational speed is maintained at the minimum rotational speed, the absorption liquid is circulated to the high temperature regenerator (1), the dilution operation can be performed reliably, and the generation of crystals can be 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、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一方式の吸
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 embodiments, a series flow type absorption refrigerator has been described, but a parallel flow type absorption refrigerator in which a high temperature regenerator (1) and a low temperature regenerator (2) are installed in parallel can also be used. When the absorbent pump is stopped, the same effect can be obtained by controlling the rotational speed of the absorption liquid pump in the same manner 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, and when the regenerator stops heating, when the regenerator's absorption liquid temperature is higher than a predetermined temperature, the regenerator's absorption liquid temperature is The rotation speed control device operates and controls the rotation speed of the absorption liquid pump to be lower than that at the start of heating, thereby reducing the amount of absorption liquid sent from the absorption liquid pump to the regenerator when the pressure inside the regenerator is stopped and the pressure changes quickly. The absorption liquid level height of the regenerator can be reduced faster,
Also, it is possible to prevent the absorption liquid from being mixed into the refrigerant.
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番こ行うことができ、結
晶の発生を防止することができる。In addition, when heating is stopped, when the temperature of the absorption liquid in the regenerator decreases to a predetermined temperature or less, the rotation speed control device operates and controls the rotation speed of the absorption liquid pump to a constant predetermined rotation speed. Dilution operation can be performed reliably during stoppage, and crystal formation 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 configuration diagram of an absorption refrigerator showing an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between the absorption liquid temperature and the frequency of electric power sent to the absorption liquid pump. (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吸収液ポンプの
回転数を再生器の吸収液温度に基づいて再生器の加熱開
始時より低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。 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、再生器の加熱停止時、再生器
の吸収液温度が所定温度以下のときには、吸収液ポンプ
の回転数を所定回転数に保つ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, when the temperature of the absorption liquid in the regenerator is higher than a predetermined temperature when heating of the regenerator is stopped, the absorption liquid pump What is claimed is: 1. An absorption refrigerator comprising: a rotation speed control device that controls the rotation speed of the regenerator to be lower than when heating of the regenerator starts based on the temperature of the absorption liquid in the regenerator. 2. In an absorption refrigerator equipped with an absorption liquid pump that sends absorption liquid from the absorber to the regenerator, when the heating of the regenerator is stopped and the temperature of the absorption liquid in the regenerator is below a predetermined temperature, the rotation speed of the absorption liquid pump is An absorption refrigerator characterized by being equipped with a rotation speed control device that maintains the rotation speed at a predetermined 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 true JPH02161264A (en) | 1990-06-21 |
| JP2744034B2 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246529A (en) * | 1997-03-03 | 1998-09-14 | Rinnai Corp | Absorbing cooling device |
Citations (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
Patent Citations (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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10246529A (en) * | 1997-03-03 | 1998-09-14 | Rinnai Corp | Absorbing cooling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2744034B2 (en) | 1998-04-28 |
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