JPS6213943A - Air-conditioning heat pump - Google Patents

Abstract

PURPOSE:To provide a device capable of getting a desired cooling effect against a variation of cooling load by a method wherein a new heat-exchanging medium whose temperature is lower than a hot heat-exchanging medium is fed into a first circulation passage when a sensed value of a temperature sensor is increased over a predetermined temperature. CONSTITUTION:A first cold-water circulation passage 6, one example of heat- exchanging medium, is formed between an evaporator 1 and a cold-water storing thermal accumulation tank 5, and a second cold-water circulation passage 7 is formed between the thermal accumulation tank 5 and the cooling greenhouse (a). A temperature sensor 12 is provided in a return passage 7a of the second circulation passage 7a, and in case that the temperature sensor 12 detects a temperature higher than the desired value, a valve 14 in an auxiliary pipe 13 is opened, a valve 15 in the second circulation passage 7 is closed, the valve 16 installed in a water-discharging pipe 17 arranged in the passage 7 is opened, the circulation water whose temperature is increased is discharged from the water-discharging pipe 17, a well water of which temperature is lower than the circulated water of which temperature is increased is circulated and then a cooling capability of the heat pump 11 is sufficiently realized.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はヒートポンプと蓄熱槽との間に冷却水等の熱交
換媒体の第１循環経路とこの蓄熱槽と温室等の冷房負荷
との間に冷却水等の熱交換媒体の第２循環経路とを形成
してある空調用ヒートポンプに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a first circulation path for a heat exchange medium such as cooling water between a heat pump and a heat storage tank, and between the heat storage tank and a cooling load such as a greenhouse. The present invention relates to an air conditioning heat pump in which a second circulation path for a heat exchange medium such as cooling water is formed.

〔従来の技術〕[Conventional technology]

この棟の空調用ヒートポンプにおいて、従来、第１循環
経路とｇＰＪ２循環経路を循環する熱交換媒体は一旦循
環経路内に封入されれば、水質汚濁等正規のメンテナン
ス作業時等以外の場合に入れ換えられることはなかった
。Conventionally, in this building's air conditioning heat pump, the heat exchange medium that circulates through the first circulation path and the gPJ2 circulation path is once sealed in the circulation path and can be replaced in cases other than regular maintenance work such as water pollution. That never happened.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従って、冷房負荷が増大すると熱交換媒体が昇温するこ
とになり、ヒートポンプでは能力的にこの外温状態が抑
制できず、温室等の冷房が所定通りにできないことがあ
った。Therefore, when the cooling load increases, the temperature of the heat exchange medium rises, and the heat pump is unable to suppress this external temperature state due to its ability to cool the greenhouse or the like in some cases.

本発明の目的は循環経路に対する析たな構造付加によっ
て、冷房負荷変動に対して所期の冷房効果が得られるも
のを提供する点にある。An object of the present invention is to provide a system that can obtain the desired cooling effect in response to cooling load fluctuations by adding an elegant structure to the circulation path.

〔問題点を解決するための手段〕[Means for solving problems]

本発明による特ｖｌＬ構成は、ヒートポンプと蓄熱槽と
の間に熱交換媒体の第１循環経路を形成するとともにこ
の蓄熱槽と温室等の冷房負荷との間に熱交換媒体の第２
循環経路を形成し、温室等冷房負荷からの復路に温度セ
ンサをぺけ、この温度センサーの検出値が設定温度以上
になった場合にこの高温熱交換媒体より低温の析たな熱
交換媒体ｔ−第工循環経路員ノに投入して、ヒートポン
プの蒸発器との熱交換の後蓄熱槽に送り込み、かつ、温
室冷房負荷からの熱交換媒体を経路外に排出するように
構成してある点にあり、その作用効果は次の通りである
。The special vlL configuration according to the present invention forms a first circulation path for a heat exchange medium between a heat pump and a heat storage tank, and a second circulation path for a heat exchange medium between the heat storage tank and a cooling load such as a greenhouse.
A circulation path is formed, and a temperature sensor is installed on the return path from the cooling load such as a greenhouse. The structure is such that the heat exchange medium from the greenhouse cooling load is discharged to the outside of the circulation route, and is sent to the heat storage tank after heat exchange with the evaporator of the heat pump. The functions and effects are as follows.

〔作　用〕[For production]

つまり、第２循環経路の復路に対して温度センサを設け
ることによって冷房負荷の変動状態を把握し乍ら、この
温度センサが設定値以上の昇温状態を検出した場合には
冷房負荷側からの熱交換媒体を経路外に排出するととも
に、この昇温し良熱交換媒体の替りにこれより低温の新
たな熱交換媒体を５８１循環経路に投入して、この新た
な熱交換媒体を蒸発器での熱交換の後蓄熱槽に送り込む
ようにしてある。In other words, by providing a temperature sensor on the return path of the second circulation path, fluctuations in the cooling load can be ascertained, and if this temperature sensor detects a temperature increase that exceeds the set value, the temperature sensor is installed on the return path of the second circulation path. At the same time as discharging the heat exchange medium to the outside of the path, a new heat exchange medium of a lower temperature is introduced into the 581 circulation path in place of this heated and good heat exchange medium, and this new heat exchange medium is used in the evaporator. After heat exchange, it is sent to a heat storage tank.

従って、蒸発！ｉｌｌ！Ｉへ流入する熱交換媒体の温度
を、冷房負荷の変動にかかわらず所期のものに維持でき
るので、蒸発器との熱交換量も所期のものにでき、蓄熱
槽に貯蔵される冷水温度を設定値通りに維持できる。Therefore, evaporation! ill! Since the temperature of the heat exchange medium flowing into the I can be maintained at the desired temperature regardless of fluctuations in the cooling load, the amount of heat exchanged with the evaporator can also be maintained at the desired value, and the temperature of the cold water stored in the heat storage tank can be maintained at the desired temperature. can be maintained at the set value.

〔発宍の効果〕[Effect of the explosion]

その結果、冷房負荷変動に対してもヒートポンプの能力
を最大に発揮させて対応できるので、冷房負荷の温度を
設定値までに降下させるのに従来のものに比して迅速に
対処でさ、温室内作物等に与える影響を抑えることがで
きる。　しかも、このような効果を奏する為の方法が例
えば井戸水等の天然恒温水を利用して熱交換媒体を入れ
かえるだけの構造変更を行うだけでよいので、例えば蒸
発器との熱交換面積を可変にするものに比して構造変更
も配管を追加するだけの簡単なものでよい。As a result, the heat pump can respond to fluctuations in the cooling load by maximizing its capacity, making it possible to reduce the temperature of the cooling load to the set value more quickly than with conventional systems. It is possible to suppress the impact on internal crops, etc. Furthermore, in order to achieve this effect, it is only necessary to change the structure by simply replacing the heat exchange medium by using natural constant temperature water such as well water, so for example, the heat exchange area with the evaporator can be made variable. Structural changes can be as simple as adding piping compared to those that do.

〔実施例〕〔Example〕

図示するように、蒸発器（１）、エンジン（ト７）駆動
型圧Ｍ機（２１、凝縮器ｔ３１％膨張弁（４）からなる
冷凍回路を設けるとともに、蒸発器１１）と冷水貯蔵用
蓄熱槽ｔｅ＋との間に熱交換媒体の一例である冷水の第
１循環経路（６）、及び、この蓄熱槽（６）と冷房用温
室ｔａ＋との間に冷水の第２儂環経路（７）を形成して
ある。　一方、凝縮器（３）と温水貯蔵用蓄熱槽１８）
との間に温水第８循環経ｉｉＳ＋９１を設けるとともに
、この蓄熱槽（８）と暖房用温室１ｂｌとの間に温水第
４循環経Ｆ＠ｔｌＬｌｌを設け、ヒートポンプ（エリを
構成してある。As shown in the figure, a refrigeration circuit consisting of an evaporator (1), an engine (7) driven pressure M machine (21, a condenser t31% expansion valve (4)) is provided, as well as an evaporator 11) and a heat storage for cold water storage. A first circulation path (6) for cold water, which is an example of a heat exchange medium, between the tank te+ and a second circulation path (7) for cold water between this heat storage tank (6) and the cooling greenhouse ta+. has been formed. On the other hand, the condenser (3) and the heat storage tank 18) for storing hot water
An eighth hot water circulation path iiS+91 is provided between the heat storage tank (8) and the heating greenhouse 1bl, and a fourth hot water circulation path F@tlLll is provided between the heat storage tank (8) and the heating greenhouse 1bl to form a heat pump (Eri).

前記第２循環経路（７）の復路（７ａ）に温度セン丈０
４を設け、冷房負荷変動による冷水温の変動を検出する
ようにしてある。　−力、前記弗ｌ循環経路（６）の蒸
発器＋１）入口側Ｖ′ｃ対して井戸水等を投入すべく補
助配管−を設け、もって、温度センサ（１２Ｉが設定値
以上の温度を検出した場合には、補助配管＋１３１中の
パルプ圓を開、第２循環経路（７）中のバルブ０６）を
閉、及び、この経路（７）に設けられた排水用管Ｏηに
設けられたパルプ（１１９を開にして、昇温した循環水
を前記排水用管０ηから排出し、この昇温循環水より温
度の低い井戸水を循環させ、ヒートポンプ（１１）での
冷却能力を十分発揮させるものに構成してある。There is a temperature sensor with a height of 0 on the return path (7a) of the second circulation path (7).
4 is provided to detect fluctuations in cold water temperature due to fluctuations in cooling load. - An auxiliary pipe is installed to supply well water, etc. to the evaporator + 1) inlet side V'c of the filtration circulation path (6), and the temperature sensor (12I) detects a temperature higher than the set value. In case, the pulp round in the auxiliary pipe +131 is opened, the valve 06 in the second circulation path (7) is closed, and the pulp ( 119 is opened, the heated circulating water is discharged from the drainage pipe 0η, and well water having a lower temperature than the heated circulating water is circulated, so that the cooling capacity of the heat pump (11) is fully exerted. It has been done.

〔別実施例〕[Another example]

■　前記熱交換媒体としては空気導水以外のものを使用
しでもよく、又、補助媒体としては井戸水たけでなく、
別置のタンクに蓄えられた冷水を使用してもよい。■ The heat exchange medium may be other than air-conducted water, and the auxiliary medium may be not only well water but also
Cold water stored in a separate tank may also be used.

＠　冷房負荷としては温室以外に工場等を対象としても
よい。@ The cooling load may be applied to factories, etc. other than greenhouses.

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

図面は本発呻４に係る空調用ヒートポンプの実施例を示
す全体構成図である。 （５）・・・・・・蓄熱槽、（６）・・・・・・第ｌ循
環経路、（７）・・・・・・第２循環経路、（７ａ）・
・・・・・復路、（１１）・・・・・・ヒートポンプ、
（１針・・・・温度センサ、（ａ）・・・・・・冷房負
荷。The drawing is an overall configuration diagram showing an embodiment of an air conditioning heat pump according to the present invention. (5)... Heat storage tank, (6)... First circulation path, (7)... Second circulation path, (7a).
... Return trip, (11) ... Heat pump,
(1 needle...Temperature sensor, (a)...Cooling load.

Claims (1)

【特許請求の範囲】[Claims] ヒートポンプ（１１）と蓄熱槽（５）との間に熱交換媒
体の第１循環経路（６）を形成するとともにこの蓄熱槽
（５）と温室等の冷房負荷（ａ）との間に熱交換媒体の
第２循環経路（７）を形成し、温室等冷房負荷（ａ）か
らの復路（７ａ）に温度センサ（１２）を設け、この温
度センサ（１２）の検出値が設定温度以上なつた場合に
この高温熱交換媒体より低温の新たな熱交換媒体を第１
循環経路（６）に投入して、ヒートポンプ（１１）の蒸
発器（１）との熱交換後蓄熱槽（５）に送り込み、かつ
、温室冷房負荷（ａ）からの熱交換媒体を経路外に排出
するように構成してある空調用ヒートポンプ。A first circulation path (6) for a heat exchange medium is formed between the heat pump (11) and the heat storage tank (5), and heat exchange is performed between the heat storage tank (5) and the cooling load (a) of a greenhouse or the like. A second circulation path (7) for the medium is formed, and a temperature sensor (12) is provided on the return path (7a) from the cooling load (a) such as a greenhouse, and when the detected value of this temperature sensor (12) is higher than the set temperature. In this case, a new heat exchange medium at a lower temperature than this high temperature heat exchange medium is used as the first heat exchange medium.
After exchanging heat with the evaporator (1) of the heat pump (11), the heat exchange medium is sent to the heat storage tank (5), and the heat exchange medium from the greenhouse cooling load (a) is removed from the circulation path (6). An air conditioning heat pump configured to discharge.