JP3342081B2 - Water-cooled air conditioner - Google Patents
Water-cooled air conditionerInfo
- Publication number
- JP3342081B2 JP3342081B2 JP05639293A JP5639293A JP3342081B2 JP 3342081 B2 JP3342081 B2 JP 3342081B2 JP 05639293 A JP05639293 A JP 05639293A JP 5639293 A JP5639293 A JP 5639293A JP 3342081 B2 JP3342081 B2 JP 3342081B2
- Authority
- JP
- Japan
- Prior art keywords
- compressor
- water
- air conditioner
- heat exchanger
- cooled air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003507 refrigerant Substances 0.000 claims description 16
- 238000007710 freezing Methods 0.000 claims description 12
- 230000005856 abnormality Effects 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000008014 freezing Effects 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000002528 anti-freeze Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は水冷式空気調和機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-cooled air conditioner.
【０００２】[0002]
【従来の技術】従来の水冷式空気調和機の１例が図２に
示されている。冷房運転時、圧縮機１から吐出されたガ
ス冷媒は、実線矢印で示すように、四方切換弁２を経て
水熱交換器６に入り、ここで伝熱管９内を流過する冷却
水と熱交換することにより凝縮液化する。この液冷媒は
絞り機構５で絞られることにより断熱膨張した後、室内
熱交換器３に入り、ここで室内フアン４により送風され
る室内空気と熱交換してこれを冷却することにより蒸発
気化する。次いで、このガス冷媒は四方切換弁２を経て
圧縮機１に吸入される。2. Description of the Related Art FIG. 2 shows an example of a conventional water-cooled air conditioner. During the cooling operation, the gas refrigerant discharged from the compressor 1 enters the water heat exchanger 6 through the four-way switching valve 2 as shown by the solid line arrow, where the cooling water and the heat flowing through the heat transfer tube 9 are cooled. It is condensed and liquefied by replacement. The liquid refrigerant is adiabatically expanded by being throttled by the throttle mechanism 5 and then enters the indoor heat exchanger 3 where it exchanges heat with the indoor air blown by the indoor fan 4 and cools it to evaporate and evaporate. . Next, the gas refrigerant is sucked into the compressor 1 via the four-way switching valve 2.
【０００３】暖房運転時、四方切換弁２は破線矢印で示
すように切り換えられる。すると、圧縮機１から吐出さ
れた冷媒は、破線矢印で示すように、室内熱交換器３に
入り、ここで室内空気を加熱することにより凝縮液化
し、絞り機構５で断熱膨張し、水熱交換器６で蒸発気化
して四方切換弁２を経て圧縮機１に戻る。[0003] During the heating operation, the four-way switching valve 2 is switched as shown by the dashed arrow. Then, the refrigerant discharged from the compressor 1 enters the indoor heat exchanger 3 as shown by the dashed arrow, where the refrigerant is condensed and liquefied by heating the indoor air, adiabatically expanded by the throttle mechanism 5, and hydrothermally expanded. The evaporator vaporizes in the exchanger 6 and returns to the compressor 1 via the four-way switching valve 2.
【０００４】７は凍結防止用圧力スイッチで、暖房運転
時における冷媒回路内の低圧圧力を検知し、これが設定
値例えば2.5Kg/cm2 以下に下がったときに作動する。こ
の信号をコントローラ８が受信すると、コントローラは
圧縮機１に指令してこれを停止させることにより水熱交
換器６の凍結を防止している。[0004] Reference numeral 7 denotes a freezing prevention pressure switch, which detects a low pressure in the refrigerant circuit during a heating operation and operates when the pressure drops to a set value, for example, 2.5 kg / cm 2 or less. When the controller 8 receives this signal, the controller instructs the compressor 1 to stop it, thereby preventing the water heat exchanger 6 from freezing.
【０００５】[0005]
【発明が解決しようとする課題】この種水冷式空気調和
機においては、冷媒回路内に封入された冷媒が漏洩する
と、その性能が低下するのみならず種々の不具合が発生
する。そこで、この冷媒の漏洩に対する保護装置を設け
ることが種々提案されたが、これらはいずれもコストが
嵩むという問題があった。In such a water-cooled air conditioner, when the refrigerant sealed in the refrigerant circuit leaks, not only the performance thereof is reduced, but also various problems occur. In view of this, various proposals have been made to provide a protection device against the leakage of the refrigerant, but all of them have a problem that the cost is increased.
【０００６】[0006]
【課題を解決するための手段】本発明は上記課題を解決
するために発明されたものであって、その要旨とすると
ころは、暖房運転時に圧縮機から吐出される冷媒が室内
熱交換器、絞り機構、水熱交換器をこの順に経て上記圧
縮機に循環する冷媒回路の上記絞り機構から上記圧縮機
に至る間の低圧の冷媒圧力を検知し、これが設定値以下
に下がったときに作動する凍結防止用圧力スイッチと、
これが作動したとき圧縮機の運転を停止することにより
水熱交換器の凍結を防止する凍結防止装置を備えた水冷
式空気調和機において、上記圧縮機の停止後所定時間経
過した後に上記凍結防止用圧力スイッチが作動したと
き、ガス漏れ状態と判定するガス漏判定手段と、これか
らの指令を受けたとき異常表示する異常表示手段を設け
たことを特徴とする水冷式空気調和機にある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the gist of the present invention is that refrigerant discharged from a compressor during a heating operation is supplied to an indoor space.
After passing through the heat exchanger, throttling mechanism and water heat exchanger in this order,
From the throttle mechanism of the refrigerant circuit circulating through the compressor to the compressor
Detects a low-pressure refrigerant pressure during the period, and operates when the pressure drops below a set value.
In a water-cooled air conditioner equipped with an anti-freezing device that stops freezing of the water heat exchanger by stopping the operation of the compressor when this is activated, the anti-freezing device is used after a predetermined time has elapsed after the stop of the compressor. A water-cooled air conditioner is provided with a gas leak determining means for determining a gas leak state when a pressure switch is actuated, and an abnormality displaying means for displaying an abnormality when a command is received from the gas leak determining means.
【０００７】[0007]
【作用】本発明においては、上記構成を具えているた
め、圧縮機の停止後所定時間経過した後に凍結防止用圧
力スイッチが作動したとき、ガス漏判定手段はガス漏状
態と判定し、異常表示手段はこれを表示する。According to the present invention, when the pressure switch for preventing freezing is operated after a predetermined time has elapsed after the compressor is stopped, the gas leak determining means determines that the gas is leaking and displays an abnormality. The means displays this.
【０００８】[0008]
【実施例】本発明の１実施例が図１に示されている。凍
結防止用圧力スイッチ７の検出値はコントローラ８の比
較手段10に入力され、ここで設定手段11から入力された
設定値( 例えば2.5Kg/cm2)と比較される。検出値が設定
値以下のとき、比較手段10は出力手段12を介して圧縮機
１に出力してこれを停止することにより水熱交換器４の
凍結を防止する。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG. The detected value of the antifreeze pressure switch 7 is input to the comparing means 10 of the controller 8, where it is compared with the set value (for example, 2.5 kg / cm 2 ) input from the setting means 11. When the detected value is equal to or less than the set value, the comparing means 10 outputs to the compressor 1 via the output means 12 and stops it, thereby preventing the water heat exchanger 4 from freezing.
【０００９】圧縮機の停止スイッチ13が投入されると、
これからの信号がタイマ14に入力される。すると、タイ
マ14は計時を開始し、予め設定された所定時間経過後
（冷媒回路の低圧と高圧とが均圧するのに要する時間、
例えば３分）にガス漏判定手段15に出力する。この後、
ガス漏判定手段15は比較手段10からの出力を受信すると
ガス漏れ状態と判定し、判定結果を出力手段16を介して
異常表示手段17に出力することによりこれを表示させ
る。When the stop switch 13 of the compressor is turned on,
The signal from now on is input to the timer 14. Then, the timer 14 starts measuring time, and after a lapse of a predetermined time (a time required for equalizing the low pressure and the high pressure of the refrigerant circuit,
(For example, 3 minutes). After this,
Upon receiving the output from the comparing means 10, the gas leak determining means 15 determines that the gas is leaking, and outputs the determination result to the abnormality display means 17 via the output means 16 to display the result.
【００１０】[0010]
【発明の効果】本発明においては、圧縮機の停止後所定
時間経過した後に凍結防止用圧力スイッチが作動したと
き、ガス漏判定手段はガス漏状態と判定し、異常表示手
段はこれを表示する。この結果、圧縮機の停止毎にガス
漏れか否かを判定できるので、ガス漏状態を容易、か
つ、迅速に知ることができる。従って、空気調和機がガ
ス漏状態のまま運転を継続することによる性能低下や故
障を未然に防止できる。また、既存の凍結防止用圧力ス
イッチを利用しうるので、構成が簡素であり、コストの
上昇を抑制できる。According to the present invention, when the anti-freezing pressure switch is operated after a predetermined time has elapsed after the compressor is stopped, the gas leak judging means judges that the gas is leaking, and the abnormality indicating means displays this. . As a result, it is possible to determine whether or not there is a gas leak every time the compressor is stopped, so that the gas leak state can be easily and quickly known. Therefore, it is possible to prevent performance degradation or failure due to continued operation of the air conditioner in a gas leak state. Further, since an existing anti-freezing pressure switch can be used, the configuration is simple, and an increase in cost can be suppressed.
【図１】本発明の１実施例を示す制御ブロック図であ
る。FIG. 1 is a control block diagram showing one embodiment of the present invention.
【図２】従来の水冷式空気調和機の系統図である。FIG. 2 is a system diagram of a conventional water-cooled air conditioner.
７ 凍結防止用圧力スイッチ １ 圧縮機 ６ 水熱交換器 ８ コントローラ 14 タイマ 15 ガス漏判定手段 17 異常表示手段 7 Freezing prevention pressure switch 1 Compressor 6 Water heat exchanger 8 Controller 14 Timer 15 Gas leak determination means 17 Abnormality display means
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−20579（ＪＰ，Ａ) 実開 昭56−173972（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F25B 49/02 520 F25B 49/02 570 F25B 49/02 510 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-20579 (JP, A) JP-A-56-173972 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F25B 49/02 520 F25B 49/02 570 F25B 49/02 510
Claims (1)
が室内熱交換器、絞り機構、水熱交換器をこの順に経て
上記圧縮機に循環する冷媒回路の上記絞り機構から上記
圧縮機に至る間の低圧の冷媒圧力を検知し、これが設定
値以下に下がったときに作動する凍結防止用圧力スイッ
チと、これが作動したとき圧縮機の運転を停止すること
により水熱交換器の凍結を防止する凍結防止装置を備え
た水冷式空気調和機において、上記圧縮機の停止後所定
時間経過した後に上記凍結防止用圧力スイッチが作動し
たとき、ガス漏れ状態と判定するガス漏判定手段と、こ
れからの指令を受けたとき異常表示する異常表示手段を
設けたことを特徴とする水冷式空気調和機。1. A refrigerant discharged from a compressor during a heating operation.
Passes through the indoor heat exchanger, throttling mechanism, and water heat exchanger in this order.
From the throttle mechanism of the refrigerant circuit circulating in the compressor
Detects the low-pressure refrigerant pressure before reaching the compressor and activates the anti-freezing pressure switch when the pressure drops below a set value.When the switch is activated, the operation of the compressor is stopped to stop the water heat exchanger. In a water-cooled air conditioner provided with an antifreezing device for preventing freezing, when the antifreeze pressure switch is operated after a predetermined time has elapsed after the stop of the compressor, gas leak determining means for determining a gas leak state; A water-cooled air conditioner, further comprising an abnormality display means for displaying an abnormality when receiving a command from now on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05639293A JP3342081B2 (en) | 1993-02-23 | 1993-02-23 | Water-cooled air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05639293A JP3342081B2 (en) | 1993-02-23 | 1993-02-23 | Water-cooled air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06249554A JPH06249554A (en) | 1994-09-06 |
| JP3342081B2 true JP3342081B2 (en) | 2002-11-05 |
Family
ID=13025954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05639293A Expired - Fee Related JP3342081B2 (en) | 1993-02-23 | 1993-02-23 | Water-cooled air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3342081B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011021851A (en) * | 2009-07-17 | 2011-02-03 | Toshiba Carrier Corp | Refrigerating cycle |
| CN104121737A (en) * | 2014-08-13 | 2014-10-29 | 广东志高暖通设备股份有限公司 | Single cooling water source multi-on line unit |
| CN104132492A (en) * | 2014-08-13 | 2014-11-05 | 广东志高暖通设备股份有限公司 | Single-cold-water-source multi-split air conditioner machine |
-
1993
- 1993-02-23 JP JP05639293A patent/JP3342081B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06249554A (en) | 1994-09-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3162132B2 (en) | Refrigeration device control method | |
| JP3109500B2 (en) | Refrigeration equipment | |
| JP2002228281A (en) | Air conditioner | |
| KR20040050478A (en) | A compressor driving method of air-conditioner having 4 compressor | |
| JP3445861B2 (en) | Air conditioner | |
| JP3530983B2 (en) | Separate air conditioner | |
| US7540163B2 (en) | Prevention of flooded starts in heat pumps | |
| JP3342081B2 (en) | Water-cooled air conditioner | |
| JPH11159924A (en) | Air conditioner piping connection method | |
| JP3342145B2 (en) | Air conditioner | |
| JP3202465B2 (en) | Separate type air conditioner | |
| JPH11118227A (en) | Air conditioner | |
| JP3687201B2 (en) | Air conditioner | |
| KR20000073043A (en) | Fan trouble sensing method for air conditioner | |
| JP3213433B2 (en) | Refrigeration cycle equipment | |
| JPH0486444A (en) | Air conditioner | |
| JP3337264B2 (en) | Air conditioner defroster | |
| JP3099574B2 (en) | Air conditioner pressure equalizer | |
| JP3054560B2 (en) | Air conditioner heating operation method | |
| JP2007051838A (en) | Air conditioner | |
| JP2983858B2 (en) | Air conditioner heating operation method | |
| JP3864742B2 (en) | Multi-room air conditioner | |
| JP3754205B2 (en) | Control valve operating method for air conditioner and air conditioner | |
| JP2503784B2 (en) | Operation control device for air conditioner | |
| KR100243085B1 (en) | Air conditioner and defrosting method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020716 |
|
| LAPS | Cancellation because of no payment of annual fees |