JPS58195725A - Air conditioning system utilising heat accumulated in ice - Google Patents

Abstract

PURPOSE:To enable the operation of an air conditioning system in which the ice produced by a refrigerator and which is floated in cold water serving as a cold heat source to cool the inside of a room to be made with reduced heat losses by a method wherein the ice produced on the surface of evaporator is melted by the circulating water from the air conditioner. CONSTITUTION:A refrigerant piping 10 bent in a zigzag form is interposed between two sheets of heat conducting plates. One end of a high temperature piping 14 opens in the space between a heat-insulating material 13 surrounding the space between the two sheets of heat conducting plates and the latter to constitute an evaporator 2. When the refrigerant piping 10 is supplied with the refrigerant discharged from a compressor 7 and coaled and liquified, the cold water in a low temperature reservoir 1b of an ice heat accumulating tank 1 is supplied into a water spray pipe 3 which sprays it onto the outer surface of the evaporator 2 to form ice. After that, the circulating water from the air conditioner is supplied from a circulating water storage header 4 through a pump 17c and the high temperature piping 14 into the evaporator 2 to heat the heating plates to thereby thaw the ice on the surface of the evaporator 2 and then the resultant water is allowed to drop into a mixing tank 1a.

Description

【発明の詳細な説明】 本発明は、冷凍機により製造した氷を冷水に浮かべ、こ
の氷と冷水を冷熱源として室内冷房に利用できるように
した氷蓄熱利用空調システムに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioning system using ice heat storage, in which ice produced by a refrigerator is floated in cold water, and the ice and cold water can be used as cold heat sources for indoor cooling.

周知のように夜間電力を利用し冷凍機を稼動させ、蓄熱
槽内の水を冷やし、得られた冷水と氷を利用して昼間、
冷房利用する空調システムがある。As is well known, electricity is used during the night to operate a refrigerator to cool the water in the heat storage tank, and the resulting cold water and ice are used during the day.
There is an air conditioning system for cooling.

この空調システムにおいては、冷凍機からの冷媒ヲハイ
フを通１）で蓄熱槽の中に導入し、この冷媒パイプをコ
イル状、あるいは、ν字蛇行状に配設し、この配役管に
伝熱板を取付けて蒸発器とじ。In this air conditioning system, the refrigerant from the refrigerator is introduced into the heat storage tank through 1), this refrigerant pipe is arranged in a coil shape or a ν-shaped meandering shape, and a heat exchanger plate is attached to this distribution pipe. Attach and close the evaporator.

この蒸発器を通過した冷媒がふたたび冷凍機に戻る蓄熱
槽内冷却装置を有している。この蓄熱槽内冷却装置は、
蓄熱槽の底壁に蒸発器を固定し、冷凍機からの冷媒によ
り蒸発器外表面に着氷させ。It has a heat storage tank cooling device in which the refrigerant that has passed through the evaporator returns to the refrigerator again. This heat storage tank cooling device is
The evaporator is fixed to the bottom wall of the heat storage tank, and the refrigerant from the refrigerator is used to form ice on the outer surface of the evaporator.

蓄熱槽内を氷と水の共存状態とするものである。This allows ice and water to coexist inside the heat storage tank.

この氷と水により蓄熱された冷熱を配管を介して空調器
へ冷水として循環させるようにしたものが当該空調シス
テムである。This air conditioning system circulates the cold heat stored by the ice and water to the air conditioner via piping as cold water.

この空調システムでは、冷水だけでなく氷の溶解潜熱も
利用しているので蓄熱槽の蓄熱容量を太きくできる長所
がある。しかし、蓄熱槽内での製氷の際、蒸発器に形成
された氷は、一定厚さまでは定速成長するが、２０〜５
０−の厚さに達すると蒸発器の冷却能力が低下するため
氷の成長が止まってしまう。従って製氷量を多くするた
めには定期的に蒸発器に付着した氷をはがす必要がある
が。This air conditioning system uses not only cold water but also latent heat of melting ice, so it has the advantage of increasing the heat storage capacity of the heat storage tank. However, when ice is made in a heat storage tank, the ice formed in the evaporator grows at a constant rate until it reaches a certain thickness;
When the thickness reaches 0-, the cooling capacity of the evaporator decreases and ice growth stops. Therefore, in order to increase the amount of ice produced, it is necessary to periodically remove the ice that has adhered to the evaporator.

従来、蒸発器から氷をはがす際、冷凍機をデフロストサ
イクルに切換えて、これまで冷媒が通過し冷えていた配
管に暖かい熱媒を通していたため蓄熱槽内の冷水も暖め
られてしまうという問題があった。Conventionally, when removing ice from an evaporator, the refrigerator was switched to a defrost cycle and a warm heat medium was passed through pipes that had previously been cooled by refrigerant, which caused the problem that the cold water in the heat storage tank was also heated. Ta.

本発明の目的は、上記の問題を解決するために蓄熱槽が
ら空調器へ送られた冷水が、空１１ｍから１１ とに着目し、この空調器・からの環水を利用して蒸発器
に付着した氷をは力ｉ’１．ｔｔようにして、冷凍機を
ア７゜８．や４つ９１−え、。ｈｒｘ＜ｍ＊ｒｈるよう
にし・た氷蓄熱利用空調システムを提供することにある
。The purpose of the present invention is to solve the above problem by focusing on the fact that the cold water sent from the heat storage tank to the air conditioner is from 11 m to 11 m, and using the ring water from the air conditioner to feed the evaporator. The adhering ice is removed by a force i'1. tt, and set the refrigerator to a7°8. Ya four 91-eh. An object of the present invention is to provide an air conditioning system using ice heat storage that satisfies hrx<m*rh.

この目的を達成するために本発明においては。In the present invention to achieve this objective.

連通口を有する空調器への冷水を貯留する低温槽と空ｊ
ｌｌｉ器からの環水が流入する高温槽を設は製氷時には
、低温槽内の冷水を前記蒸発器表面に散水して製氷し、
脱水時は、空調器からの環水を前記蒸発器に送水できろ
ようにしたことを要旨とするものである。Low-temperature tank and air tank for storing cold water to air conditioner with communication port
A high-temperature tank into which the ring water from the llI vessel flows is installed, and when making ice, the cold water in the low-temperature tank is sprinkled on the surface of the evaporator to make ice.
The gist is that during dehydration, the ring water from the air conditioner can be sent to the evaporator.

以下１本発明の実施例を図シこもとづいて説明する。第
１図は本発明の氷蓄熱利用空調システムの系統図であり
、第２図は蒸発器の正面図、第５図は蒸発器の断面図で
ある。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a system diagram of an air conditioning system using ice heat storage according to the present invention, FIG. 2 is a front view of an evaporator, and FIG. 5 is a sectional view of the evaporator.

まず第１図にもとづいて氷蓄熱利用空調システムとその
作動を説明する。氷蓄熱槽１は氷と水が共存する混合槽
１ｍ４空調器６−・の冷水を供給する・ｆ 低温槽１ｂと空調器ｔｌ；’らの環水が流入する高温槽
１φ）らなる。低温　ｂ、高温槽ＩＣともに混合槽１ａ
と連通させておく必要があるが低温槽１ｂと混合槽１ｍ
との間の連通口は空調器へ混合槽内の氷塊が流入しない
よう低温槽１ｂ下方に設けることが好ましい。First, the ice heat storage air conditioning system and its operation will be explained based on FIG. The ice heat storage tank 1 consists of a mixing tank 1 m4 in which ice and water coexist, a low temperature tank 1b that supplies cold water to the air conditioners 6--, and a high-temperature tank 1φ) into which the ring water from the air conditioners tl and t1 flows. Mixing tank 1a for both low temperature b and high temperature tank IC
It is necessary to communicate with the low temperature tank 1b and mixing tank 1m.
It is preferable to provide a communication port between the cold chamber 1b and the low temperature chamber 1b below the cold chamber 1b so that the ice cubes in the mixing tank do not flow into the air conditioner.

低温槽１ｂ内の冷水は圧送機１７ｍにより空調器６に送
られる。冷水は空調器６により外気と熱交換が終ると、
配管を通して高温槽１ｃ４と環流する。この湯水の温度
は、冷水より５〜１０℃高くなっている。The cold water in the low temperature chamber 1b is sent to the air conditioner 6 by a pressure feeder 17m. After the cold water completes heat exchange with the outside air by the air conditioner 6,
It circulates with the high temperature tank 1c4 through piping. The temperature of this hot water is 5 to 10 degrees Celsius higher than that of cold water.

一方蒸発器２は蓄熱槽１内、混合槽１ａ上方に設けられ
、圧縮機７．凝縮機８．膨張弁９からなる冷凍機と冷媒
配管１０で接続されている。蒸発器２は蓄熱槽壁に冷媒
配管１０を介して固定される。この蒸発器２の細部構造
を第２．３図にもとづい−Ｃ説明する。蒸発器２は、蓄
熱槽上方から０字、蛇行（）で垂れ下がり圧縮機ｌに接
続された冷媒配管】ＯのＵ字蛇行部を二枚の伝熱板１１
で挟持し・、二枚の伝熱板１１の間の空間の周囲を断熱
材１５で囲ったものからなる。この二枚の伝熱板１１と
断熱材１５とで囲まれた空間に空調器６からの環水を流
１・込めるように高温配管１４の一端が開口（７−Ｃい
る。なお高温配管１４からの環水を蒸発器２内に流し込
んだとき、冷媒配管ｌＯのＵ字蛇行に沿って流れるよう
仕切板１６が二枚の伝熱板１１の闇に第２図に示すごと
く設けられている。また蒸発器に流入した環水の出口１
５が蒸発器の下方に設けである。On the other hand, the evaporator 2 is provided inside the heat storage tank 1 and above the mixing tank 1a, and the compressor 7. Condenser 8. It is connected to a refrigerator consisting of an expansion valve 9 through a refrigerant pipe 10. The evaporator 2 is fixed to the wall of the heat storage tank via a refrigerant pipe 10. The detailed structure of this evaporator 2 will be explained based on FIG. 2.3. The evaporator 2 is connected to the U-shaped meandering section of the refrigerant pipe, which hangs down from the top of the heat storage tank in a meandering shape () and is connected to the compressor l, between two heat exchanger plates 11.
The space between the two heat transfer plates 11 is sandwiched between the two heat transfer plates 11 and the space between them is surrounded by a heat insulating material 15. One end of the high temperature pipe 14 is opened (7-C) so that the ring water from the air conditioner 6 can flow into the space surrounded by the two heat transfer plates 11 and the heat insulating material 15. A partition plate 16 is provided between the two heat transfer plates 11 as shown in FIG. 2 so that when the recycled water is poured into the evaporator 2, it flows along the U-shaped meandering of the refrigerant pipe lO. .Also, the outlet 1 of the ring water that has flowed into the evaporator
5 is provided below the evaporator.

さて第１図にもどっここのような構造からなる蒸発器２
内の冷媒配管１０に冷凍機からの冷媒が供給されている
とき低温槽ｌｂ内の冷水を圧送機１７ｄを通して散水管
うまで送り、散水管うにより蒸発器２の外表面に冷水を
吹き付けると、蒸発器外表面に着氷する。一定時間散水
後、冷凍機を停止（〕蒸発器２に付着した氷を脱水する
ために、空調器からの環水を貯留しであるヘッダ耳から
圧送機１７Ｃを介して蒸発器２内へ流入させる。蒸発器
２内に流入した環水は伝熱板１１を暖め　伝熱板１１に
付着した氷をはがす、一定時間環水を蒸発器２内に流さ
せた後、冷凍機を再度始動させる。−のとき冷凍機の始
動と連−させて圧送機１７Ｃを停止させろことにより環
水の蒸発器への流入は停止する３、以上のようなサイク
ルで蒸発器で作られた氷は脱水され、混合槽ｌａ内に落
下する。Now, Figure 1 also shows the evaporator 2, which has a structure like this.
When the refrigerant from the refrigerator is being supplied to the refrigerant pipe 10 inside, the cold water in the cryostat 1b is sent through the pressure feeder 17d to the sprinkler tube, and the cold water is sprayed onto the outer surface of the evaporator 2 through the sprinkler tube. Ice builds up on the outer surface of the evaporator. After sprinkling water for a certain period of time, stop the refrigerator. (In order to dehydrate the ice attached to the evaporator 2, the ring water from the air conditioner flows into the evaporator 2 from the header ear where it is stored via the pressure feeder 17C.) The ring water that has flowed into the evaporator 2 warms the heat transfer plate 11 and removes the ice attached to the heat transfer plate 11. After the ring water has flowed into the evaporator 2 for a certain period of time, the refrigerator is started again. When -, the pressure feeder 17C is stopped in conjunction with the start of the refrigerator, thereby stopping the flow of ring water into the evaporator. 3. In the above cycle, the ice made in the evaporator is dehydrated. , falls into the mixing tank la.

以上、述べたように本発明におい−Ｃは、空調器からの
環水を利用して蒸発器に付＠ｒ、た氷をはがすようにし
たため、脱水時に冷凍機を冷凍サイクルからデフロスト
サイクルに切換える必要がなくなり、蓄熱槽全体として
の熱損失が大幅に減少した。As mentioned above, the present invention-C utilizes the ring water from the air conditioner to peel off the ice attached to the evaporator, so the refrigerator can be switched from the refrigeration cycle to the defrost cycle during dehydration. It is no longer necessary, and the heat loss of the heat storage tank as a whole has been significantly reduced.

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

第１図は本発明の氷蓄熱利用空調システム系統図、第２
図は蒸発器の正面図、第う図は第２図のＡ−Ａ断面図で
ある４ １・・・氷蓄熱槽、２・・蒸発器、う・・・散水管、６
・・空調器、ｌ・・圧縮器、８・・・凝縮器、９・・・
膨張弁。 １０・・冷媒配管、１１１・・・高温配管、１６・・・
仕切板特許出願人 トヨタ自ｖＪ重工業株式会社 、： 代表者　森　田・俊　夫 □し ＋Ｕ、、。 １ 第　　１　　図 第　　２　− 第　３　図Figure 1 is a system diagram of the air conditioning system using ice heat storage according to the present invention;
The figure is a front view of the evaporator, and the second figure is a sectional view taken along line A-A in Figure 2.
...Air conditioner, l...Compressor, 8...Condenser, 9...
expansion valve. 10... Refrigerant piping, 111... High temperature piping, 16...
Partition plate patent applicant: Toyota Motor Corp. v. J. Heavy Industries, Ltd.: Representative: Toshio Morita + U. 1 Figure 1 Figure 2 - Figure 3

Claims (1)

【特許請求の範囲】 冷水と氷を収容する混合槽と、該混合槽に隣接（）て配
置されそれぞれ混合槽との間に連通部を有１７、空調器
へ供給する冷水を貯留する低温槽と空調器からの環水が
流入する高温槽を有する氷蓄熱利用空調システムであ−
て、前記混合槽内水面上方に固定され、冷凍機からの冷
媒配管を伝熱板で囲んでなる蒸発器と、該蒸発器の外表
面に低温槽内の冷水を散水する散水管と、空調器からの
環水の一部を前記蒸発器へ送水する送水管とを設け。 該送水管を通（・て空調器からの環水の一部を前記蒸発
器の伝熱板で囲まれた空間に流すことができるようにし
たことを特徴とする氷蓄熱Ｉｊ用空調ンステム、。[Scope of Claims] A mixing tank for storing cold water and ice, and a low-temperature tank arranged adjacent to the mixing tank and having a communication portion between each tank and storing the cold water to be supplied to an air conditioner. This is an air conditioning system that uses ice heat storage and has a high temperature tank into which the ring water from the air conditioner flows.
an evaporator fixed above the water surface in the mixing tank and comprising a refrigerant pipe from the refrigerator surrounded by a heat transfer plate; a water sprinkling pipe for sprinkling cold water in the cryostat on the outer surface of the evaporator; and an air conditioner. A water pipe is provided to send part of the ring water from the vessel to the evaporator. An air conditioning system for ice heat storage IJ, characterized in that a part of the ring water from the air conditioner can flow through the water pipe into the space surrounded by the heat transfer plate of the evaporator. .