JPH046856B2 - - Google Patents
Info
- Publication number
- JPH046856B2 JPH046856B2 JP4911983A JP4911983A JPH046856B2 JP H046856 B2 JPH046856 B2 JP H046856B2 JP 4911983 A JP4911983 A JP 4911983A JP 4911983 A JP4911983 A JP 4911983A JP H046856 B2 JPH046856 B2 JP H046856B2
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- liquid
- detector
- reservoir
- control valve
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 45
- 238000010521 absorption reaction Methods 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000006096 absorbing agent Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
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、吸収冷凍機の制御装置に関し、特に
発生器への加熱量（以下、加熱入力という）を冷
媒循環径路に付設した冷媒液溜めの冷媒液量と関
連させて制御する装置に関する。[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a control device for an absorption refrigerator, and in particular to a control device for controlling a refrigerant liquid attached to a refrigerant circulation path to control the amount of heating to a generator (hereinafter referred to as heating input). The present invention relates to a device for controlling the amount of refrigerant in a reservoir.
(ロ) 従来技術
吸収冷凍機においては、冷水の蒸発器出口側温
度（以下、冷水出口温という）を検出し、負荷の
増減変化に対応させて発生器への熱源流体供給量
を増減する制御弁（以下、加熱入力制御弁とい
う）の開度を制御し、負荷に見合う冷凍能力を発
揮させ、所定温度の冷水を得る手段が広く知られ
ており、また、発生器で吸収液から分離された冷
媒の一部を貯溜する冷媒液溜めを冷媒循環径路に
付設して吸収液濃度を調節すると共に冷媒液溜め
の冷媒液が所定量以上になるとこの冷媒液を吸収
液循環径路へ溢流させつつ戻して吸収液の結晶を
防ぐようにする手段も広く知られている。(b) Prior art In absorption chillers, the temperature at the exit side of the evaporator of chilled water (hereinafter referred to as chilled water outlet temperature) is detected, and the amount of heat source fluid supplied to the generator is controlled to increase or decrease in response to changes in load. A well-known method is to control the opening of a valve (hereinafter referred to as a heating input control valve) to exert a refrigerating capacity commensurate with the load and obtain chilled water at a predetermined temperature. A refrigerant reservoir for storing a portion of the refrigerant is attached to the refrigerant circulation path to adjust the absorption liquid concentration, and when the refrigerant liquid in the refrigerant reservoir exceeds a predetermined amount, the refrigerant liquid is caused to overflow into the absorption liquid circulation path. Means for preventing crystallization of the absorbent liquid by returning the absorbent liquid to the absorbent liquid are also widely known.
しかし、従来のこれらの手段は互いに関連して
用いられていないために、例えば吸収器へ供給す
る冷却水温が高くなつて吸収器の吸収能力が低下
したり、吸収器の冷却管や蒸発器の冷水管の汚れ
がひどくなつて伝熱性能が悪化する等の原因で冷
水出口温が上昇して見掛け上の負荷が増大した場
合、加熱入力を増すように加熱入力制御弁が開か
れるように制御され、かつ、冷媒液溜めの冷媒液
貯溜量も増大される結果、やがて冷媒液は冷媒液
溜めから吸収液循環径路へ溢流するようになる。
しかし、この溢流する冷媒液は蒸発器での気化作
用には活用されず、増大された加熱入力は冷却水
によつて機外へ棄てられるだけとなり、加熱入力
の損失を生じるという欠点があつた。 However, since these conventional methods are not used in conjunction with each other, for example, the temperature of the cooling water supplied to the absorber increases and the absorption capacity of the absorber decreases, or the absorber's cooling pipes and evaporator deteriorate. When the cold water outlet temperature rises and the apparent load increases due to factors such as worsening of heat transfer performance due to severe contamination of the cold water pipes, the heating input control valve is controlled to open to increase the heating input. At the same time, the amount of refrigerant liquid stored in the refrigerant liquid reservoir is increased, and as a result, the refrigerant liquid eventually overflows from the refrigerant liquid reservoir to the absorption liquid circulation path.
However, this overflowing refrigerant liquid is not used for vaporization in the evaporator, and the increased heating input is simply discarded outside the machine by the cooling water, resulting in a loss of heating input. Ta.
(ハ) 発明の目的
本発明は、上記従来技術の欠点を除き、加熱入
力の損失を防止することを目的としたものであ
る。(c) Purpose of the Invention The present invention aims to eliminate the drawbacks of the above-mentioned prior art and prevent loss of heating input.
(ニ) 発明の構成
本発明は、負荷の増減変化に応じて加熱入力を
増減調節する加熱入力制御弁を備えた吸収冷凍機
において、冷媒循環径路に付設した冷媒液溜めの
液位を感知する検出器または冷媒液溜めから吸収
液循環径路へ溢流する冷媒液の流れを感知する検
出器を備え、冷媒液溜めの冷媒液が設定液位に達
したときまたは溢流し始めたとき、前記検出器の
信号により加熱入力制御弁の開度が増大しないよ
うに制御する構成を採ることにより、見掛け上の
負荷の増加に伴なう加熱入力の過剰供給を防いで
加熱入力の損失防止を達成したものである。(D) Structure of the Invention The present invention is an absorption refrigerator equipped with a heating input control valve that increases or decreases heating input in accordance with changes in load. A detector or a detector for sensing the flow of refrigerant liquid overflowing from the refrigerant liquid reservoir to the absorption liquid circulation path is provided, and when the refrigerant liquid in the refrigerant liquid reservoir reaches a set liquid level or begins to overflow, the detection is performed. By adopting a configuration in which the heating input control valve is controlled so that the opening degree does not increase based on the signal from the device, excessive supply of heating input due to an increase in apparent load is prevented, and loss of heating input has been prevented. It is something.
(ホ) 実施例
第１図は本発明の一実施例を示した概略構成説
明図で、１は高温発生器、２は低温発生器、３は
凝縮器、４は蒸発器、５は吸収器、６及び７は低
温及び高温溶液熱交換器で、これらは冷媒導管
８、冷媒液流下管９、冷媒ポンプ１０を有する冷
媒液還流管１１、溶液ポンプ１２を有する稀液管
１３、中間液管１４及び濃液管１５で接続されて
冷凍サイクルを形成する冷媒と吸収液の循環径路
を構成している。(E) Embodiment FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention, in which 1 is a high temperature generator, 2 is a low temperature generator, 3 is a condenser, 4 is an evaporator, and 5 is an absorber. , 6 and 7 are low temperature and high temperature solution heat exchangers, which include a refrigerant conduit 8, a refrigerant liquid downflow pipe 9, a refrigerant liquid return pipe 11 with a refrigerant pump 10, a dilute liquid pipe 13 with a solution pump 12, and an intermediate liquid pipe. 14 and concentrated liquid pipe 15 to form a refrigerant and absorption liquid circulation path forming a refrigeration cycle.
１６は蒸発器４に挿通された冷水管、１７は凝
縮器３及び吸収器５に挿通された冷却管、１８は
発生器１に挿通された熱源蒸気供給管、１９は蒸
発器４下部に配設した冷媒液溜め、２０は冷媒液
溜め１９と吸収器５の溶液溜め２１とを接続した
オーバーフロー管で、このオーバーフロー管は適
当な内径の細管を用いている。 16 is a cold water pipe inserted into the evaporator 4, 17 is a cooling pipe inserted into the condenser 3 and absorber 5, 18 is a heat source steam supply pipe inserted into the generator 1, and 19 is arranged below the evaporator 4. The provided refrigerant reservoir 20 is an overflow tube connecting the refrigerant reservoir 19 and the solution reservoir 21 of the absorber 5, and this overflow tube is a thin tube with an appropriate inner diameter.
S1は冷水出口温を感知する温度検出器、S2はオ
ーバーフロー管２０内の冷媒液の流れを感知する
検出器、Ｖは熱源蒸気の流量を調節する制御弁
で、この制御弁は、温度検出器S1の信号により、
冷水出口温が設定温度より高くなると開方向へ低
くなると閉方向へ操作されて、負荷の増減変化に
応じて蒸気流量（加熱入力）を比例的に増減調節
すると共に、オーバーフロー管２０内を冷媒が流
れるようになると冷水出口温が設定温度より高く
なつても、検出器S2の信号により、開方向へ操作
されなくなつて蒸気流量の調節を停止するように
なつている。 S1 is a temperature detector that senses the chilled water outlet temperature, S2 is a detector that senses the flow of refrigerant liquid in the overflow pipe 20, and V is a control valve that adjusts the flow rate of heat source steam. Due to the signal of detector S 1 ,
When the chilled water outlet temperature becomes higher than the set temperature, it is operated in the open direction, and when it becomes lower than the set temperature, it is operated in the closed direction, and the steam flow rate (heating input) is proportionally increased or decreased according to changes in load. Even if the cold water outlet temperature becomes higher than the set temperature when the steam starts flowing, the signal from the detector S2 prevents the valve from being operated in the opening direction and stops regulating the steam flow rate.
次に、斯る構成の装置の動作の一例を第２図に
基いて説明する。 Next, an example of the operation of the apparatus having such a configuration will be explained based on FIG. 2.
第２図は、横軸に負荷〔％〕、縦軸に制御弁Ｖ
の開度〔％〕と熱源蒸気流量〔Kg／hr〕を表示し
た線図である。 In Figure 2, the horizontal axis shows the load [%], and the vertical axis shows the control valve V.
It is a diagram showing the opening degree [%] and heat source steam flow rate [Kg/hr].
今、負荷が80％で制御弁Ｖ開度が80％、蒸気流
量がａKg／hrの状態（第２図中のＡ点）から負荷
が90％に増大すると負荷に対する加熱入力が不足
して冷水出口温が上昇傾向を示すので、温度検出
器S1からの信号により制御弁Ｖ開度は90％、蒸気
流量はｂKg／hrの状態（第２図のＢ点）に増大調
節されて設定温度の冷水が得られるのである。 Now, if the load increases from 80%, the control valve V opening is 80%, and the steam flow rate is aKg/hr (point A in Figure 2) to 90%, the heating input for the load is insufficient and the cold water Since the outlet temperature shows a rising trend, the control valve V opening degree is increased to 90% and the steam flow rate is increased to bKg/hr (point B in Figure 2) according to the signal from temperature detector S1 , and the set temperature is increased. of cold water can be obtained.
一方、第２図中のＡ点の状態において、例えば
冷水管１６に臭化リチウム等の吸収剤が付着して
冷水管１６の伝熱性能が低下した場合、冷水出口
温が上昇傾向を示して見掛上の負荷は80％を越え
るが、蒸発器４での冷媒気化量は減少して冷媒液
溜め１９の未気化冷媒液量が増し、オーバーフロ
ー管２０へ冷媒液が溢流し始める。そして、オー
バーフロー管２０内の冷媒の流れを検出器S2が感
知するとこの検出器S2の信号により制御弁Ｖの開
方向への操作を停止するのである。尚、オーバー
フロー管２０の冷媒液溜め１９との接続を適当な
水位に選定すれば、見掛上の負荷が90％を示して
も、制御弁Ｖの開度は80％の状態に維持され、
（ｂ−ａ）Kg／hrの蒸気流量（加熱入力）の損失
を防止できるのである。（第２図参照）
第３図は、本発明の他の実施例を示す概略構成
説明図で、第１図に示した構成機器と同じものは
同一の図番を付している。第３図において、S3は
冷媒液溜め１９に付着した液面検出器で、冷媒液
がこの液面検出器の設定液位まで上昇したとき、
見掛上の負荷が増大しても制御弁Ｖの開方向への
操作を停止するようにして、蒸気流量（加熱入
力）の損失を防ぐのである。尚、冷媒液溜め１９
内の冷媒液位は、通常、実際上の負荷の大小によ
つて変化するので、液面検出器の設定液位を実際
上の負荷に応じて変化させるようにしておけば、
加熱入力の損失防止効果がより向上する。このた
めに、例えば実際上の負荷に対応する設定液位を
コンピユータのプログラムに予め組み込んでお
き、このコンピユータからの指令で液面検出器S3
の設定液位を変化させることが好ましい。 On the other hand, in the state of point A in FIG. 2, for example, if an absorbent such as lithium bromide adheres to the cold water pipe 16 and the heat transfer performance of the cold water pipe 16 decreases, the cold water outlet temperature shows a tendency to rise. Although the apparent load exceeds 80%, the amount of refrigerant vaporized in the evaporator 4 decreases, the amount of unvaporized refrigerant in the refrigerant reservoir 19 increases, and the refrigerant begins to overflow into the overflow pipe 20. When the detector S 2 senses the flow of refrigerant in the overflow pipe 20, the operation of the control valve V in the opening direction is stopped based on the signal from the detector S 2 . Furthermore, if the connection between the overflow pipe 20 and the refrigerant reservoir 19 is selected at an appropriate water level, the opening degree of the control valve V will be maintained at 80% even if the apparent load is 90%.
(b-a) Loss of steam flow rate (heating input) of Kg/hr can be prevented. (See FIG. 2) FIG. 3 is a schematic structural explanatory diagram showing another embodiment of the present invention, in which the same components as those shown in FIG. 1 are given the same figure numbers. In FIG. 3, S3 is a liquid level detector attached to the refrigerant reservoir 19, and when the refrigerant liquid rises to the set level of this liquid level detector,
Even if the apparent load increases, operation of the control valve V in the opening direction is stopped to prevent loss of steam flow rate (heating input). In addition, the refrigerant liquid reservoir 19
The refrigerant level in the refrigerant normally changes depending on the actual load, so if you change the liquid level setting of the liquid level detector according to the actual load,
The effect of preventing loss of heating input is further improved. For this purpose, for example, a set liquid level corresponding to the actual load may be programmed in advance into a computer program, and the liquid level detector S 3
It is preferable to change the set liquid level.
また、実施例においては、蒸気流量を調節する
制御弁Ｖを図示したが、この制御弁は例えば石油
や都市ガス等の燃料の供給量を調節するものでも
良いことは勿論であり、更に本発明装置は一重効
用吸収冷凍機に用いても良いことも無論である。 Further, in the embodiment, a control valve V for regulating the steam flow rate is illustrated, but it goes without saying that this control valve may be one for regulating the supply amount of fuel such as oil or city gas. Of course, the device may also be used in a single-effect absorption refrigerator.
(ヘ) 発明の効果
以上のように、本発明は、冷媒液溜め内の冷媒
液が設定量に達すると、見掛上の負荷が増大して
も加熱入力の調節を停止するようにしたものであ
るから、加熱入力の損失を少くする効果を有し、
また、吸収液の過濃縮の程度も小さくなり、臭化
リチウム等の吸収剤を用いる冷凍機にあつては、
吸収液の結晶を未然に防止できる効果も奏する。(F) Effects of the Invention As described above, the present invention is configured to stop adjusting the heating input when the refrigerant liquid in the refrigerant reservoir reaches a set amount even if the apparent load increases. Therefore, it has the effect of reducing heating input loss,
In addition, the degree of overconcentration of the absorption liquid is also reduced, and in the case of refrigerators that use absorbents such as lithium bromide,
It also has the effect of preventing crystallization of the absorption liquid.
第１図は本発明の制御装置の一実施例を示した
概略構成説明図、第２図は本発明制御装置の動作
例を示した線図、第３図は本発明制御装置の他の
実施例を示した概略構成説明図である。
１９……冷媒液溜め、２０……オーバーフロー
管、S1……温度検出器、S2，S3……検出器、Ｖ…
…加熱入力制御弁。
FIG. 1 is a schematic configuration explanatory diagram showing one embodiment of the control device of the present invention, FIG. 2 is a diagram showing an example of the operation of the control device of the present invention, and FIG. 3 is another embodiment of the control device of the present invention. It is a schematic configuration explanatory diagram showing an example. 19...Refrigerant reservoir, 20...Overflow pipe, S1 ...Temperature detector, S2 , S3 ...Detector, V...
…Heating input control valve.
Claims (1)
量を調節する制御弁を備えた吸収冷凍機におい
て、冷媒循環径路に付設した冷媒液溜めの液位を
感知する検出器または冷媒液溜めから吸収液循環
径路へ溢流する冷媒液の流れを感知する検出器を
備え、冷媒液溜めの冷媒液が設定液位に達したと
きまたは溢流し始めたとき、前記検出器の信号に
より制御弁の開度の調節を停止するようにしたこ
とを特徴とする吸収冷凍機の制御装置。1. In an absorption refrigerator equipped with a control valve that adjusts the amount of heat source fluid supplied to the generator according to changes in load, a detector that senses the liquid level of a refrigerant reservoir attached to the refrigerant circulation path or a refrigerant reservoir It is equipped with a detector that senses the flow of refrigerant liquid overflowing into the absorption liquid circulation path, and when the refrigerant liquid in the refrigerant liquid reservoir reaches a set liquid level or begins to overflow, a signal from the detector activates the control valve. A control device for an absorption refrigerator, characterized in that adjustment of the opening degree is stopped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4911983A JPS59173666A (en) | 1983-03-23 | 1983-03-23 | Controller for absoprtion refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4911983A JPS59173666A (en) | 1983-03-23 | 1983-03-23 | Controller for absoprtion refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59173666A JPS59173666A (en) | 1984-10-01 |
| JPH046856B2 true JPH046856B2 (en) | 1992-02-07 |
Family
ID=12822170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4911983A Granted JPS59173666A (en) | 1983-03-23 | 1983-03-23 | Controller for absoprtion refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59173666A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11166112B2 (en) | 2015-10-29 | 2021-11-02 | PogoTec, Inc. | Hearing aid adapted for wireless power reception |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0448452Y2 (en) * | 1986-03-19 | 1992-11-16 |
-
1983
- 1983-03-23 JP JP4911983A patent/JPS59173666A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11166112B2 (en) | 2015-10-29 | 2021-11-02 | PogoTec, Inc. | Hearing aid adapted for wireless power reception |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59173666A (en) | 1984-10-01 |
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