JPH10122590A - Air conditioner using water as heating medium - Google Patents

Air conditioner using water as heating medium

Info

Publication number
JPH10122590A
JPH10122590A JP8274523A JP27452396A JPH10122590A JP H10122590 A JPH10122590 A JP H10122590A JP 8274523 A JP8274523 A JP 8274523A JP 27452396 A JP27452396 A JP 27452396A JP H10122590 A JPH10122590 A JP H10122590A
Authority
JP
Japan
Prior art keywords
water
drain
room
gas
drain water
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
Application number
JP8274523A
Other languages
Japanese (ja)
Inventor
Shinji Kuroda
紳司 黒田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rinnai Corp
Original Assignee
Rinnai Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rinnai Corp filed Critical Rinnai Corp
Priority to JP8274523A priority Critical patent/JPH10122590A/en
Publication of JPH10122590A publication Critical patent/JPH10122590A/en
Pending legal-status Critical Current

Links

Landscapes

  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce running cost by eliminating an exclusive drain water discharging pipe acting as a drain water treating means for drain water generated in a gas-liquid heat exchanger reducing the size of a hole in a wall through which a pipe is passed, recovering cold heat deprived of by the drain water, and supplementing with drain water even if the water acting as heat medium decreases due to evaporation, in the case that there is arranged the gas-liquid heat exchanger for heat-exchanging with cold water supplied from an outdoor area and air blown into a room so as to cool an interior of a room. SOLUTION: A deep drain pan 14 for receiving drain water generated at a gas-liquid heat exchanger 12 is arranged within an air conditioner case 13. As a water level in the drain pan 14 reaches a predetermined value, an electric pump 16 is operated so as to forcedly feed drain water accumulated in the drain pan 14 into a return pipe 4. As a result, the drain water discharging pipe can be eliminated, a hole 5a in a wall can be reduced in size and at the same time cold heat deprived of by the drain water is recovered, a cooling capacity is improved, drain water acting as heating medium is supplemented to restrict a running cost.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、室内が冷房可能
であるとともに、屋外から空調用の熱媒体となる水(冷
水あるいは温水)を室内へ供給する供給配管と、室内で
熱交換された水を再び屋外へ戻す戻し配管と、を備える
水を熱媒体とした空調装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supply pipe for supplying water (cold water or hot water) serving as a heat medium for air conditioning from the outside to a room while cooling the room. And a return pipe for returning the air to the outside again.

【0002】[0002]

【従来の技術】水を熱媒体とした空調装置の室内冷房方
式として、1)室内に設置される空調ケース内に、冷水
が導かれる気液熱交換器を設けたものと、2)室内に設
置される空調ケース内に、温水が導かれる気液熱交換器
の他に、空気を冷却する冷却器(例えば、フロン等の冷
媒を用いた直膨式の冷却器)を設けたものと、が知られ
ている。
2. Description of the Related Art As an indoor cooling system of an air conditioner using water as a heat medium, 1) an air-conditioning case installed in a room and a gas-liquid heat exchanger through which cold water is introduced; In the installed air-conditioning case, in addition to a gas-liquid heat exchanger through which hot water is introduced, a cooler that cools air (for example, a direct expansion type cooler using a refrigerant such as chlorofluorocarbon), It has been known.

【0003】冷却手段(冷水が導かれる気液熱交換器、
あるいは直膨式の冷却器)が空気を冷却する際、空気中
に含まれる水蒸気が冷却手段で冷やされて液化凝縮し、
ドレン水が発生する。冷却手段は、室内に設置されるた
め、発生したドレン水を処理する必要がある。このドレ
ン水の処理手段として、冷却手段で発生したドレン水を
ドレンパンで受け、壁を貫通して設置したドレン水排出
管を介して外部に排水処理したり、あるいはドレンパン
で受けたドレン水を下部に配置したタンク内に溜めるよ
うに設け、ドレン水がタンク内に溜まったら、使用者等
がタンクを外してドレン水を捨ていた。
[0003] Cooling means (a gas-liquid heat exchanger through which cold water is introduced,
Or a direct expansion type cooler) cools the air, the water vapor contained in the air is cooled by cooling means and liquefied and condensed,
Drain water is generated. Since the cooling means is installed indoors, it is necessary to treat generated drain water. As a means for treating the drain water, the drain water generated by the cooling means is received by a drain pan and drained to the outside through a drain water discharge pipe installed through the wall, or the drain water received by the drain pan is discharged to a lower part. When the drain water accumulated in the tank, a user or the like removed the tank and discarded the drain water.

【0004】[0004]

【発明が解決しようとする課題】従来の技術では、ドレ
ン水を排出するためだけの専用のドレン水排出管を用い
る場合では、気液熱交換器等へ熱媒体を給排する配管以
外に、ドレン水排出管を通すための穴を壁に開ける必要
があり、水を熱媒体とした空調装置を設置するための壁
穴が、大きくなる不具合があった。また、使用者がタン
クに溜まったドレン水を捨てるものでは、使用者にドレ
ン水を捨てるという作業を要求するため、使用者が面倒
である。
In the prior art, when a dedicated drain water discharge pipe only for discharging drain water is used, in addition to a pipe for supplying and discharging a heat medium to a gas-liquid heat exchanger and the like, A hole for passing the drain water discharge pipe must be formed in the wall, and the wall hole for installing an air conditioner using water as a heat medium is disadvantageously large. Further, when the user discards the drain water accumulated in the tank, the user is required to perform an operation of discarding the drain water, which is troublesome for the user.

【0005】[0005]

【発明の目的】この発明の目的は、室内に設置される空
調ケース内でドレン水が発生しても、ドレン水の処理を
使用者が行わなくて済むとともに、ドレン水を排出する
専用のドレン水排出管も廃止でき、結果的に排水処理が
簡単で、且つ水を熱媒体とした空調装置を設置するため
の壁穴が小さくて済む水を熱媒体とした空調装置の提供
にある。
SUMMARY OF THE INVENTION It is an object of the present invention to eliminate the need for a user to treat drain water even when drain water is generated in an air-conditioning case installed in a room, and to provide a dedicated drain for discharging drain water. An object of the present invention is to provide an air conditioner using water as a heat medium, in which water discharge pipes can be eliminated, and as a result, wastewater treatment is simple and a wall hole for installing an air conditioner using water as a heat medium is small.

【0006】[0006]

【課題を解決するための手段】この発明は、上記の目的
を達成するために、次の技術的手段を採用する。 〔請求項1の手段〕水を熱媒体とした空調装置は、屋外
から室内に冷水を送ることの可能な供給配管と、室内に
取り付けられ、前記供給配管によって室内に導かれた冷
水と室内に吹き出される空気とを熱交換可能に設けられ
た気液熱交換器と、この気液熱交換器を通過した水を屋
外に戻す戻し配管と、前記気液熱交換器で発生したドレ
ン水を受けるドレンパンと、このドレンパンで受けられ
たドレン水を前記空調ケース内において前記戻し配管内
に送り込む送り込み手段と、を備える。
The present invention employs the following technical means to achieve the above object. An air conditioner using water as a heat medium is provided with a supply pipe capable of sending chilled water from the outside to the room, a chilled water installed inside the room, and the chilled water guided into the room by the supply pipe. A gas-liquid heat exchanger provided so as to be able to exchange heat with the blown air, a return pipe for returning water passing through the gas-liquid heat exchanger to the outside, and drain water generated in the gas-liquid heat exchanger. The air conditioner includes a drain pan for receiving the water, and a feeding means for feeding the drain water received by the drain pan into the return pipe in the air conditioning case.

【0007】〔請求項2の手段〕屋外から室内に温水を
送ることの可能な供給配管と、室内に取り付けられ、前
記供給配管によって室内に導かれた温水と室内に吹き出
される空気とを熱交換可能に設けられた気液熱交換器
と、この気液熱交換器を通過した水を屋外に戻す戻し配
管と、前記気液熱交換器とともに室内の空調ケース内に
収納され、室内に吹き出される空気を冷却可能な冷却器
と、この冷却器で発生したドレン水を受けるドレンパン
と、このドレンパンで受けられたドレン水を前記戻し配
管内に送り込む送り込み手段と、を備える。
[Means of Claim 2] A supply pipe capable of sending hot water from the outdoors to the room, a hot water attached to the room and guided into the room by the supply pipe, and air blown into the room. A gas-liquid heat exchanger provided so as to be replaceable, a return pipe for returning water passing through the gas-liquid heat exchanger to the outside, and a gas-liquid heat exchanger together with the gas-liquid heat exchanger, which are housed in an indoor air-conditioning case and blown out into the room. A cooler capable of cooling the air to be cooled, a drain pan for receiving the drain water generated by the cooler, and a feeding means for feeding the drain water received by the drain pan into the return pipe.

【0008】〔請求項3の手段〕請求項1または請求項
2の水を熱媒体とした空調装置において、前記送り込み
手段は、前記ドレンパン内に溜まったドレン水を前記戻
し配管内に圧送する電動ポンプと、前記ドレンパンの水
位が所定値に達したか否かを検出する水位センサを備
え、この水位センサが所定水位を検出した際に前記電動
ポンプを作動させる制御手段と、を具備することを特徴
とする。
According to a third aspect of the present invention, in the air conditioner using water as a heat medium according to the first or second aspect, the feeding means feeds the drain water accumulated in the drain pan into the return pipe by pressure. A pump and a water level sensor for detecting whether or not the water level of the drain pan has reached a predetermined value, and control means for operating the electric pump when the water level sensor detects a predetermined water level. Features.

【0009】[0009]

【作用および発明の効果】[Action and effect of the invention]

〔請求項1の作用および効果〕水を熱媒体とした空調装
置が冷房運転を行う場合、気液熱交換器に冷水が供給さ
れて室内に吹き出される空気を冷却し、室内を冷房す
る。この時、気液熱交換器で発生したドレン水は、ドレ
ンパンに受けられ、送り込み手段によって、戻し配管内
に送り込まれる。つまり、ドレン水は、気液熱交換器を
通過した水とともに、戻し配管を通って室外に導かれ
る。
[Action and Effect of Claim 1] When an air conditioner using water as a heat medium performs a cooling operation, cold water is supplied to a gas-liquid heat exchanger to cool air blown into a room and cool the room. At this time, the drain water generated in the gas-liquid heat exchanger is received by the drain pan and sent into the return pipe by the feeding means. That is, the drain water is guided to the outside through the return pipe together with the water that has passed through the gas-liquid heat exchanger.

【0010】このように、請求項1の水を熱媒体とした
空調装置は、室内で発生したドレン水が、戻し配管を通
って室外に導かれるため、使用者がドレン水処理を行う
必要がなく、またドレン水専用のドレン水排出管も不要
となる。このため、従来に比較して、排水処理が簡単化
され、水を熱媒体とした空調装置を設置するための壁穴
も小さくできる。
As described above, in the air conditioner using water as a heat medium, the drain water generated in the room is guided to the outside through the return pipe, so that the user needs to perform the drain water treatment. There is no need for a drain water discharge pipe dedicated to drain water. For this reason, the drainage treatment is simplified and the wall hole for installing an air conditioner using water as a heat medium can be reduced as compared with the related art.

【0011】また、ドレン水は、気液熱交換器から冷熱
の一部を奪っている。そして、この冷熱を奪ったドレン
水は、戻し配管に送り込まれるため、戻し配管から室外
に導かれた水を再び冷却する冷熱発生装置の負荷が小さ
くなる。つまり、ドレン水の奪った冷熱が再び回収され
るため、冷房能力が向上する。
Further, the drain water takes a part of the cold heat from the gas-liquid heat exchanger. Then, the drain water from which the cold heat has been taken is sent to the return pipe, so that the load of the cold heat generator that cools the water guided from the return pipe to the outside again is reduced. That is, since the cold heat taken from the drain water is recovered again, the cooling capacity is improved.

【0012】さらに、供給配管および戻し配管を循環す
る水が蒸発する場合、水が減少すると水の補充を行う
が、請求項1を採用することにより、ドレン水の混入に
よって水の補充を賄うことができる。つまり、従来に比
較して水の補充量を少なくでき、ランニングコストを抑
えることができる。
Further, when the water circulating in the supply pipe and the return pipe evaporates, the water is replenished when the water decreases, but the replenishment of the water can be covered by mixing the drain water by adopting claim 1. Can be. That is, the replenishing amount of water can be reduced as compared with the related art, and the running cost can be suppressed.

【0013】〔請求項2の作用および効果〕水を熱媒体
とした空調装置が冷房運転あるいは除湿運転を行う場
合、冷却器が作動し、室内の冷房あるいは除湿を行う。
この時、冷却器で発生したドレン水は、ドレンパンに受
けられ、送り込み手段によって、暖房用運転用の気液熱
交換器の戻し配管内に送り込まれる。つまり、ドレン水
は、戻し配管を通って室外に排出される。
When an air conditioner using water as a heat medium performs a cooling operation or a dehumidifying operation, the cooler operates to cool or dehumidify the room.
At this time, the drain water generated in the cooler is received by the drain pan, and is sent into the return pipe of the gas-liquid heat exchanger for the heating operation by the feeding means. That is, the drain water is discharged outside the room through the return pipe.

【0014】このように、請求項2の水を熱媒体とした
空調装置は、室内に設置された空調ケース内で発生した
ドレン水が、戻し配管を通って室外に導かれるため、従
来用いていたドレン水専用のドレン水排出管が不要とな
る。このため、従来に比較して、水を熱媒体とした空調
装置を設置するための壁穴を小さくすることができる。
As described above, the air conditioner using water as a heat medium according to claim 2 is conventionally used because the drain water generated in the air conditioner case installed in the room is guided outside through the return pipe. Eliminates the need for a dedicated drain water discharge pipe. For this reason, the wall hole for installing the air conditioner using water as a heat medium can be reduced as compared with the related art.

【0015】〔請求項3の作用および効果〕ドレンパン
で受けられたドレン水の水位が上昇し、水位センサがド
レンパンの水位が所定値に達した旨を検出すると、制御
手段が電動ポンプを作動させる。すると、電動ポンプが
ドレンパン内に溜まったドレン水を戻し配管内に圧送す
る。つまり、ドレンパン内に溜まったドレン水が、戻し
配管を通って室外に導かれる。
When the water level of the drain water received by the drain pan rises and the water level sensor detects that the water level of the drain pan has reached a predetermined value, the control means activates the electric pump. . Then, the electric pump returns the drain water collected in the drain pan to the return pipe. That is, the drain water accumulated in the drain pan is guided outside through the return pipe.

【0016】[0016]

【発明の実施の形態】本発明の実施の形態を、実施例お
よび変形例に基づき説明する。 〔実施例〕図1は実施例を示すもので、冷水によって室
内を冷房可能な空調装置の概略図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples and modifications. [Embodiment] FIG. 1 shows an embodiment, and is a schematic view of an air conditioner capable of cooling a room with cold water.

【0017】本実施例に示す空調装置は、屋外に設置さ
れ、熱媒体の水を冷却する屋外器1と、屋外器1で冷却
された水を室内に導く供給配管2と、室内に設置され、
供給配管2によって室内に導かれた冷水によって室内を
冷房する室内器3と、室内器3で熱交換された水を再び
屋外器1へ戻す戻し配管4とを備える。なお、供給配管
2および戻し配管4は、壁5に設けられた壁穴5aを通
されて、屋外器1と室内器3とを接続している。
The air conditioner shown in the present embodiment is installed outdoors and has an outdoor unit 1 for cooling water as a heat medium, a supply pipe 2 for guiding the water cooled by the outdoor unit 1 indoors, and an air conditioner installed indoors. ,
An indoor unit 3 for cooling the room with cold water guided into the room by the supply pipe 2 and a return pipe 4 for returning the water heat exchanged in the indoor unit 3 to the outdoor unit 1 again. Note that the supply pipe 2 and the return pipe 4 connect the outdoor unit 1 and the indoor unit 3 through a wall hole 5 a provided in the wall 5.

【0018】屋外器1は、熱媒体として使用される水を
冷却する冷熱発生装置6を備える。この冷熱発生装置6
の一例としては、フロン等の冷媒を用いた直膨式の冷凍
装置や、吸収式の冷凍装置等が用いられている。また、
屋外器1は、冷熱発生装置6の他に、熱媒体である水の
膨張や収縮による影響を吸収する所謂膨張タンクの役割
を果たし、大気に開放されるとともに、水を蓄えるシス
ターン7、および熱媒体である水を循環駆動する冷水ポ
ンプ8を備え、屋外ケース9内に収納されている。な
お、シスターン7には、水位が低下した際に上水道から
水を補充する周知の補充手段(図示しない)が設けられ
ている。また、シスターン7は、所定水位以上の水を外
部に排出するオーバーフロー用のパイプ7aを備えてい
る。
The outdoor unit 1 includes a cold heat generator 6 for cooling water used as a heat medium. This cold heat generator 6
As an example, a direct expansion type refrigeration apparatus using a refrigerant such as Freon, an absorption type refrigeration apparatus, and the like are used. Also,
The outdoor unit 1 plays a role of a so-called expansion tank that absorbs the influence of expansion and contraction of water as a heat medium, in addition to the cold heat generator 6, and is open to the atmosphere and a cistern 7 that stores water, and heat. A cold water pump 8 that circulates and drives water as a medium is provided, and is housed in an outdoor case 9. The cistern 7 is provided with a well-known replenishing means (not shown) for replenishing water from the water supply when the water level drops. Further, the cistern 7 includes an overflow pipe 7a for discharging water having a predetermined water level or higher to the outside.

【0019】室内器3は、室内に向けて空気を送る室内
送風機11を備えるとともに、この室内送風機11の発
生する空気流と熱交換可能な気液熱交換器12を備え、
空調ケース13内に収納されている。気液熱交換器12
には、冷熱発生装置6で冷却された水が供給配管2を介
して供給されるもので、供給された冷水と室内に吹き出
される空気とを熱交換して、室内に吹き出される空気を
冷却するものである。
The indoor unit 3 includes an indoor blower 11 for sending air toward the room, and a gas-liquid heat exchanger 12 capable of exchanging heat with an air flow generated by the indoor blower 11.
It is stored in the air conditioning case 13. Gas-liquid heat exchanger 12
Is supplied with water cooled by the cold heat generator 6 through the supply pipe 2, and exchanges heat between the supplied cold water and the air blown into the room to remove the air blown into the room. It cools down.

【0020】気液熱交換器12は、空気を冷却するた
め、空気中に含まれる水蒸気が凝縮し、ドレン水を発生
する。このため、空調ケース13内には、気液熱交換器
12で発生したドレン水を受けるドレンパン14が設け
られている。なお、本実施例のドレンパン14は、所定
量のドレン水を溜めることができるように深めに設けら
れている。また、空調ケース13内には、ドレンパン1
4が受けたドレン水を戻し配管4内に送り込む送り込み
手段15が設けられている。
The gas-liquid heat exchanger 12 cools the air, so that water vapor contained in the air is condensed to generate drain water. Therefore, a drain pan 14 for receiving drain water generated in the gas-liquid heat exchanger 12 is provided in the air conditioning case 13. In addition, the drain pan 14 of this embodiment is provided deep so that a predetermined amount of drain water can be stored. In the air conditioning case 13, the drain pan 1
A feeding means 15 for feeding the drain water received by the feed pipe 4 into the return pipe 4 is provided.

【0021】送り込み手段15は、ドレンパン14内に
溜まったドレン水を戻し配管4内に圧送する電動ポンプ
16と、この電動ポンプ16の作動を制御する制御手段
17とを備える。本実施例の制御手段17は、ドレンパ
ン14の水位が所定値に達したか否かを検出する水位セ
ンサ18を備え、この水位センサ18が所定水位を検出
した際に、所定時間あるいはポンプ停止水位に低下する
まで、電動ポンプ16を作動させてドレンパン14内に
溜まったドレン水を戻し配管4内に圧送する。なお、図
中に示す符号19は、水の逆流を防ぐ一方向弁である。
The feeding means 15 includes an electric pump 16 for feeding the drain water collected in the drain pan 14 into the return pipe 4 and a control means 17 for controlling the operation of the electric pump 16. The control means 17 of this embodiment includes a water level sensor 18 for detecting whether or not the water level of the drain pan 14 has reached a predetermined value. When the water level sensor 18 detects the predetermined water level, a predetermined time or a pump stop water level is detected. The drainage water accumulated in the drain pan 14 is pumped into the return pipe 4 by operating the electric pump 16 until the water pressure decreases to a lower value. In addition, the code | symbol 19 shown in a figure is a one-way valve which prevents the backflow of water.

【0022】(実施例の作動説明)冷房運転を行う場
合、冷水ポンプ8、冷熱発生装置6、室内送風機11等
が作動する。冷水ポンプ8の作動により、屋外の冷熱発
生装置6→供給配管2→室内の気液熱交換器12→戻し
配管4→再び屋外の冷熱発生装置6の順で、熱媒体であ
る水が循環する。冷熱発生装置6の作動により、供給配
管2を通って気液熱交換器12へ導かれる水を冷却す
る。気液熱交換器12に冷水が供給され、且つ室内送風
機11が作動することにより、室内に吹き出される空気
が冷却され、室内が冷房される。
(Explanation of the operation of the embodiment) When performing the cooling operation, the chilled water pump 8, the cold heat generator 6, the indoor blower 11 and the like are operated. By the operation of the chilled water pump 8, the water as the heat medium circulates in the order of the outdoor cold heat generator 6 → the supply pipe 2 → the indoor gas-liquid heat exchanger 12 → the return pipe 4 → the outdoor cold heat generator 6 again. . By the operation of the cold heat generator 6, the water guided to the gas-liquid heat exchanger 12 through the supply pipe 2 is cooled. By supplying cold water to the gas-liquid heat exchanger 12 and operating the indoor blower 11, the air blown into the room is cooled, and the room is cooled.

【0023】室内に吹き出される空気が気液熱交換器1
2で冷却される際、空気中の水蒸気が凝縮してドレン水
となり、ドレンパン14で受けられる。ドレンパン14
に溜まったドレン水の水位が所定値に達すると、電動ポ
ンプ16が作動し、ドレンパン14に溜まったドレン水
を戻し配管4内に圧送する。なお、戻し配管4内に圧送
されたドレン水は、熱媒体の水として使用される。な
お、気液熱交換器12に冷水を送って室内を冷房する冷
房運転に加え、温水を送って室内を暖房運転可能にして
も良い。この暖房運転の時は、気液熱交換器12にドレ
ン水は生じない。
The air blown into the room is a gas-liquid heat exchanger 1
When cooled in 2, water vapor in the air condenses into drain water, which is received by the drain pan 14. Drain pan 14
When the level of the drain water accumulated in the tank reaches a predetermined value, the electric pump 16 operates to pump the drain water accumulated in the drain pan 14 back into the pipe 4. The drain water pumped into the return pipe 4 is used as heat medium water. In addition, in addition to the cooling operation for sending the cold water to the gas-liquid heat exchanger 12 to cool the room, the room may be made to be able to perform the heating operation by sending the hot water. During this heating operation, no drain water is generated in the gas-liquid heat exchanger 12.

【0024】(実施例の効果)本実施例の空調装置は、
空調ケース13内で発生したドレン水が、戻し配管4を
通って室外に導かれるため、従来用いていたドレン水専
用のドレン水排出管が不要となる。このため、空調装置
を設置する際に壁5に開ける壁穴5aを従来に比較して
小さくすることができる。
(Effects of Embodiment) The air conditioner of the present embodiment
The drain water generated in the air-conditioning case 13 is guided to the outside of the room through the return pipe 4, so that a drain water discharge pipe dedicated to drain water, which has been conventionally used, becomes unnecessary. For this reason, the wall hole 5a opened in the wall 5 when installing the air conditioner can be made smaller than before.

【0025】また、ドレン水は、気液熱交換器12から
冷熱の一部を奪っており、この冷熱を奪ったドレン水
は、戻し配管4に送り込まれるため、戻し配管4から室
外に導かれた水を再び冷却する冷熱発生装置6の負荷が
小さくなる。このように、ドレン水の奪った冷熱が再び
回収されるため、空調装置の冷房能力が向上する。
Also, the drain water takes a part of the cold heat from the gas-liquid heat exchanger 12, and the drain water from which the cold heat has been taken is sent to the return pipe 4, so that the drain water is led outside from the return pipe 4. The load on the cold heat generator 6 that cools the water again is reduced. As described above, since the cold heat taken from the drain water is recovered again, the cooling capacity of the air conditioner is improved.

【0026】さらに、供給配管2および戻し配管4を循
環する水が蒸発しても、熱媒体の水としてドレン水が補
充されるため、水の補充量をなくす、あるいは少なくす
ることができる。このように水の補充量の減少により、
ランニングコストを抑えることができる。
Further, even if the water circulating in the supply pipe 2 and the return pipe 4 evaporates, the drain water is replenished as the heat medium, so that the replenishing amount of the water can be eliminated or reduced. In this way, due to the decrease in water replenishment,
Running costs can be reduced.

【0027】〔変形例〕上記の実施例では、気液熱交換
器12に冷水を送って室内を冷房する例を示したが、図
2に示すように、空調ケース13内に、暖房用、除湿用
の気液熱交換器12を設け、この気液熱交換器12には
温水を供給可能に設けるとともに、室内冷房用として圧
縮されたフロン等の蒸気冷媒が供給される冷凍サイクル
20の冷媒蒸発器21(冷却器)を配置しても良い。な
お、冷凍サイクル20は、冷媒蒸発器21の他に、冷媒
圧縮機22、冷媒凝縮器23、減圧装置24等を備えた
周知なものである。この冷凍サイクル20を作動させる
ことにより、冷媒蒸発器21を通過する空気が冷却さ
れ、室内の冷房あるいは除湿が行なわれる。そして、冷
媒蒸発器21の下部にドレンパン14を配置し、このド
レンパン14の受けたドレン水を送り込み手段15によ
って、温水の戻し配管4に送り込むように設けても良
い。なお、冷却器としては、冷水等の液体からなる冷媒
が供給されて室内に吹き出される空気を冷却する気液熱
交換器であっても良い。
[Modification] In the above embodiment, an example was shown in which cold water was sent to the gas-liquid heat exchanger 12 to cool the room. However, as shown in FIG. A gas-liquid heat exchanger 12 for dehumidification is provided. The gas-liquid heat exchanger 12 is provided so as to be able to supply hot water, and a refrigerant of a refrigeration cycle 20 to which a vapor refrigerant such as Freon compressed for indoor cooling is supplied. An evaporator 21 (cooler) may be provided. The refrigeration cycle 20 is a well-known type that includes a refrigerant compressor 22, a refrigerant condenser 23, a pressure reducing device 24, and the like, in addition to the refrigerant evaporator 21. By operating the refrigeration cycle 20, the air passing through the refrigerant evaporator 21 is cooled, and indoor cooling or dehumidification is performed. Then, a drain pan 14 may be provided below the refrigerant evaporator 21, and the drain water received by the drain pan 14 may be sent to the hot water return pipe 4 by the feeding means 15. The cooler may be a gas-liquid heat exchanger that cools air that is supplied with a refrigerant such as cold water and blown into the room.

【0028】上記の実施例では、送り込み手段15とし
て、電動ポンプ16を用いた例を示したが、戻し配管4
を流れる水の水流を利用したエジェクション(図2に示
す場合では、冷房運転時には必ずポンプ8を運転させる
ようにする。なお、除湿運転時は気液熱交換器12に温
水が送られるためポンプ8は作動する)によって、ドレ
ンパン14に溜まったドレン水を戻し配管4に送り込む
ように設けたり、ドレンパン14に溜まったドレン水の
自重で戻し配管4に送り込むように設けるなど、他の手
段を採用しても良い。
In the above embodiment, an example in which the electric pump 16 is used as the feeding means 15 has been described.
(In the case shown in FIG. 2, the pump 8 is always operated during the cooling operation. In the dehumidifying operation, the pump 8 is used because hot water is sent to the gas-liquid heat exchanger 12. 8 operates), other means such as providing the drain water accumulated in the drain pan 14 to the return pipe 4 or providing the drain water accumulated in the drain pan 14 to the return pipe 4 by its own weight are employed. You may.

【図面の簡単な説明】[Brief description of the drawings]

【図1】水を熱媒体とした空調装置の概略断面図である
(実施例)。
FIG. 1 is a schematic sectional view of an air conditioner using water as a heat medium (Example).

【図2】水を熱媒体とした空調装置の概略断面図である
(変形例)。
FIG. 2 is a schematic sectional view of an air conditioner using water as a heat medium (modification).

【符号の説明】[Explanation of symbols]

1 屋外器 2 供給配管 3 室内器 4 戻し配管 12 気液熱交換器 13 空調ケース 14 ドレンパン 15 送り込み手段 16 電動ポンプ 17 制御手段 18 水位センサ 21 冷媒蒸発器(冷却器) DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Supply pipe 3 Indoor unit 4 Return pipe 12 Gas-liquid heat exchanger 13 Air conditioning case 14 Drain pan 15 Sending means 16 Electric pump 17 Control means 18 Water level sensor 21 Refrigerant evaporator (cooler)

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】屋外から室内に冷水を送ることの可能な供
給配管と、 室内に取り付けられ、前記供給配管によって室内に導か
れた冷水と室内に吹き出される空気とを熱交換可能に設
けられた気液熱交換器と、 この気液熱交換器を通過した水を屋外に戻す戻し配管
と、 前記気液熱交換器で発生したドレン水を受けるドレンパ
ンと、 このドレンパンで受けられたドレン水を前記空調ケース
内において前記戻し配管内に送り込む送り込み手段と、
を備える水を熱媒体とした空調装置。
1. A supply pipe capable of sending cold water from the outdoors to the room, and a supply pipe attached to the room and capable of exchanging heat between the cold water guided into the room by the supply pipe and the air blown into the room. A gas-liquid heat exchanger, a return pipe for returning water passing through the gas-liquid heat exchanger to the outside, a drain pan for receiving drain water generated in the gas-liquid heat exchanger, and a drain water received by the drain pan. Feeding means for feeding the return pipe in the air conditioning case,
Air conditioner using water as heat medium.
【請求項2】屋外から室内に温水を送ることの可能な供
給配管と、 室内に取り付けられ、前記供給配管によって室内に導か
れた温水と室内に吹き出される空気とを熱交換可能に設
けられた気液熱交換器と、 この気液熱交換器を通過した水を屋外に戻す戻し配管
と、 前記気液熱交換器とともに室内の空調ケース内に収納さ
れ、室内に吹き出される空気を冷却可能な冷却器と、 この冷却器で発生したドレン水を受けるドレンパンと、 このドレンパンで受けられたドレン水を前記戻し配管内
に送り込む送り込み手段と、を備える水を熱媒体とした
空調装置。
2. A supply pipe capable of sending hot water from the outdoors to the room, and a supply pipe attached to the room and provided so as to exchange heat between the hot water guided into the room by the supply pipe and the air blown into the room. A gas-liquid heat exchanger, a return pipe for returning water passing through the gas-liquid heat exchanger to the outside, and an air-conditioning case that is housed together with the gas-liquid heat exchanger in an indoor air-conditioning case and cools air blown into the room. An air conditioner using water as a heat medium, comprising: a cooler that can be used; a drain pan that receives drain water generated by the cooler; and a feeding unit that sends the drain water received by the drain pan into the return pipe.
【請求項3】請求項1または請求項2の水を熱媒体とし
た空調装置において、 前記送り込み手段は、 前記ドレンパン内に溜まったドレン水を前記戻し配管内
に圧送する電動ポンプと、 前記ドレンパンの水位が所定値に達したか否かを検出す
る水位センサを備え、この水位センサが所定水位を検出
した際に前記電動ポンプを作動させる制御手段と、を具
備することを特徴とする水を熱媒体とした空調装置。
3. The air conditioner using water as a heat medium according to claim 1 or 2, wherein the feeding means comprises: an electric pump for pumping drain water accumulated in the drain pan into the return pipe; A water level sensor for detecting whether or not the water level has reached a predetermined value, and control means for operating the electric pump when the water level sensor detects the predetermined water level, comprising: Air conditioner used as heat medium.
JP8274523A 1996-10-17 1996-10-17 Air conditioner using water as heating medium Pending JPH10122590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8274523A JPH10122590A (en) 1996-10-17 1996-10-17 Air conditioner using water as heating medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8274523A JPH10122590A (en) 1996-10-17 1996-10-17 Air conditioner using water as heating medium

Publications (1)

Publication Number Publication Date
JPH10122590A true JPH10122590A (en) 1998-05-15

Family

ID=17542897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8274523A Pending JPH10122590A (en) 1996-10-17 1996-10-17 Air conditioner using water as heating medium

Country Status (1)

Country Link
JP (1) JPH10122590A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015115688A1 (en) * 2014-01-29 2015-08-06 한국에너지기술연구원 Cooling system using vacuum evaporation and cooling implementation method
JP2022090456A (en) * 2020-12-07 2022-06-17 ブラザー工業株式会社 air conditioner
KR102605116B1 (en) * 2022-12-16 2023-11-23 장남규 Industrial all-in-one air conditioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015115688A1 (en) * 2014-01-29 2015-08-06 한국에너지기술연구원 Cooling system using vacuum evaporation and cooling implementation method
JP2022090456A (en) * 2020-12-07 2022-06-17 ブラザー工業株式会社 air conditioner
KR102605116B1 (en) * 2022-12-16 2023-11-23 장남규 Industrial all-in-one air conditioner

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