JPS6210535A - Air-conditioning heat pump - Google Patents

Air-conditioning heat pump

Info

Publication number
JPS6210535A
JPS6210535A JP60151053A JP15105385A JPS6210535A JP S6210535 A JPS6210535 A JP S6210535A JP 60151053 A JP60151053 A JP 60151053A JP 15105385 A JP15105385 A JP 15105385A JP S6210535 A JPS6210535 A JP S6210535A
Authority
JP
Japan
Prior art keywords
heat pump
heat
temperature
storage tank
pump
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
JP60151053A
Other languages
Japanese (ja)
Inventor
Katsuyuki Yamaguchi
山口 克幸
Isamu Kubomoto
久保元 勇
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.)
Kubota Corp
Original Assignee
Kubota 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 Kubota Corp filed Critical Kubota Corp
Priority to JP60151053A priority Critical patent/JPS6210535A/en
Publication of JPS6210535A publication Critical patent/JPS6210535A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To evade the operation of the heat pump in a state of exceeding an allowable temperature and to make it possible to stop the operation of the heat pump in accordance with the temperature variation of a heat exchange medium within a heat storage tank by providing a heat exchange medium temperature detecting sensor with an outgoing path from the heat pump to the heat storage tank and in the vicinity of the outlet port of the heat pump. CONSTITUTION:Hot water is circulated between a condenser 4 and a heat storage tank (b) for storing hot water and well water is used as a heat exchange medium with respect to an evaporator 1 to carry out a space heating operation. In this case, based on the result of the temperature detection by a temperature sensor 11 provided in the heat storage tank, an output signal is emitted to a control unit 12 so as to stop the start of the heat pump 8. A hot water temperature detection sensor 13 is provided in the vicinity of the outlet port of the outgoing path 7A of a hot water circulation route 7 from the condenser 4 of the heat pump 8, and the operation of the heat pump 8 is stopped in a case where the heat pump allowable highest temperature is sensed. Accordingly, the operation more than the allowable temperature can be evaded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は温室等の熱負荷に対して蓄熱槽を介してヒート
ポンプからの熱交換媒体の一例としての熱水又は冷水を
循環供給することによってその温室等に対して暖房又は
冷房を行う際に利用される空調用ヒートポンプに関する
[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a system for supplying hot water or cold water, which is an example of a heat exchange medium, from a heat pump through a heat storage tank to the heat load of a greenhouse or the like. The present invention relates to an air conditioning heat pump used to heat or cool a greenhouse or the like.

〔従来の技術〕[Conventional technology]

この種の空調用ヒートポンプにおいて、従来は、ヒート
ポンプと蓄熱槽との間に熱交換媒体循環経路を設けると
ともに蓄熱槽に設けられた熱交換媒体温検出センサの検
出結果に基づいてヒートポンプを能力制御するように構
成してあった。
Conventionally, in this type of heat pump for air conditioning, a heat exchange medium circulation path is provided between the heat pump and the heat storage tank, and the capacity of the heat pump is controlled based on the detection result of a heat exchange medium temperature detection sensor provided in the heat storage tank. It was structured like this.

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

しかし、蓄熱槽での前記温度センサの検出結果だけでヒ
ートポンプの始動停止等運転制御するようにしてあるの
で、蓄熱槽での温度センサがヒートポンプの停止用設定
値以上の温度を感知していないにもかかわらずヒートポ
ンプの熱交換媒体自体の温度が許容温度よりも畜くなる
(熱水の場合)ことがあった(冷水の場合は許容温度よ
り低くなる。) 従って、許容温度を越えた使用によって長期に亘る間に
ヒートポンプ自体の故障を誘起していた。
However, since operations such as starting and stopping of the heat pump are controlled only based on the detection results of the temperature sensor in the heat storage tank, the temperature sensor in the heat storage tank does not detect a temperature higher than the set value for stopping the heat pump. Despite this, the temperature of the heat exchange medium itself in a heat pump sometimes becomes lower than the permissible temperature (in the case of hot water) (in the case of cold water, it becomes lower than the permissible temperature). Over a long period of time, this caused the heat pump itself to malfunction.

本発明の目的は簡単な機構の追加によって許容温度を越
えた状態での運転を回避するとともに、蓄熱槽内の熱交
換媒体の温度変化に対応して確実迅速にヒートポンプの
停止が行えるものを提供する点にある。
The purpose of the present invention is to provide a heat pump that can avoid operation in a state where the temperature exceeds the allowable temperature by adding a simple mechanism, and can also stop the heat pump reliably and quickly in response to changes in the temperature of the heat exchange medium in the heat storage tank. It is in the point of doing.

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

本発明による特徴構成はヒートポンプから蓄熱槽への往
路内で、かつ、ヒートポンプの出口近傍に熱交換媒体自
体出センサを設け、この検出センサ及び蓄熱槽側検出セ
ンサ何れか一方の検出結果が、夫々に対して設定された
設定温度より低い場合、又は、設定温度より高い場合に
はヒートポンプの運転を許容させるとともに、蓄熱槽用
検出センサがヒートポンプ始動温度を検出した場合にヒ
ートポンプと蓄熱槽との熱交換媒体循環ポンプを駆動さ
せる制御装置を備えてある点にあり、その作用効果は次
の通りである。
The characteristic configuration according to the present invention is that a heat exchange medium output sensor is provided in the outward path from the heat pump to the heat storage tank and near the outlet of the heat pump, and the detection result of either this detection sensor or the heat storage tank side detection sensor is If the temperature is lower than the set temperature or higher than the set temperature, the heat pump is allowed to operate, and if the heat storage tank detection sensor detects the heat pump starting temperature, the heat between the heat pump and the heat storage tank is The present invention is equipped with a control device for driving an exchange medium circulation pump, and its effects are as follows.

〔作 用〕[For production]

つまり、ヒートポンプ自体の運転制御の為にこのヒート
ポンプでの熱交換媒体の温度を測るセンサを設けること
によって、このセンサと蓄熱槽側のセンサとの検出温度
が設定温度内(温水製造の場合は低く、冷水製造の場合
は高く)だけで運転できるようになっているので、蓄熱
槽での検出温度が設定温度に達していなくてもヒートポ
ンプ側のセンサが設定温度以上になればヒートポンプの
運転を停止させることができ、許容温度以上での運転を
回避することができる。
In other words, by installing a sensor that measures the temperature of the heat exchange medium in the heat pump in order to control the operation of the heat pump itself, the detected temperature between this sensor and the sensor on the heat storage tank will be within the set temperature (lower in the case of hot water production). (or higher in the case of cold water production), so even if the detected temperature in the heat storage tank has not reached the set temperature, the heat pump will stop operating if the sensor on the heat pump side exceeds the set temperature. It is possible to avoid operation at temperatures above the permissible temperature.

しかも、この温度センサの設定位置が熱交換媒体のもっ
とも高温(低温)状態にある出口近傍に設けであるので
、より確実に温度状態を捉えることができる。
Moreover, since the temperature sensor is set near the outlet where the heat exchange medium is at its highest temperature (lowest temperature), the temperature state can be detected more reliably.

〔発明の効果〕〔Effect of the invention〕

その結果、温度センサを設けるにしてもヒートポンプの
熱交換媒体に着目した合理的な設定によって、必要最小
限の機器付加だけで、ヒートポンプ自体の故障を未然に
防止できるとともに、このような故障を回避する為に高
価な耐熱性材料等を使用するコスト増を来す方法を採る
必要もない。
As a result, even if a temperature sensor is installed, by making rational settings that focus on the heat exchange medium of the heat pump, it is possible to prevent failures of the heat pump itself, and to avoid such failures, with only the minimum necessary addition of equipment. There is no need to use expensive heat-resistant materials to increase costs.

但し、ヒートポンプの出口近傍に前記センサを設けるこ
とによって、ヒートポンプの停止状態から再起動させる
際に、蓄熱槽の温度センサがヒートポンプ運転開始温度
を検出したとしても、ヒートポンプの残熱(あるいは冷
熱)によって前記ヒートポンプ側センサがヒートポンプ
の許容温度以上(或いは以下)の温度を感知している場
合にはヒートポンプが始動しないが、本発明の場合には
蓄熱槽の温度センサが運転開始温度を検出した状態で前
記ポンプを作動させてヒートポンプ側センサが位置する
側の熱交換媒体に比べて低温状態(或いは高温状B)に
あるヒートポンプと蓄熱槽との循環経路内にある熱交換
媒体を循環させて循環経路内温度の均−化及びヒートポ
ンプ側センサ近傍での熱媒体温度の低温化(或いは高温
化)を図ることにより、蓄熱槽の温度センサの検出作動
に迅速に対応させてヒートポンプを起動させることがで
きる。
However, by providing the sensor near the outlet of the heat pump, when restarting the heat pump from a stopped state, even if the temperature sensor in the heat storage tank detects the temperature at which the heat pump starts operating, the residual heat (or cold heat) of the heat pump will If the heat pump side sensor detects a temperature higher than (or lower than) the allowable temperature of the heat pump, the heat pump will not start, but in the case of the present invention, the heat pump will not start when the temperature sensor of the heat storage tank detects the operation start temperature. The pump is operated to circulate the heat exchange medium in the circulation path between the heat pump and the heat storage tank, which is in a lower temperature state (or in a higher temperature state B) than the heat exchange medium on the side where the heat pump side sensor is located. By equalizing the internal temperature and lowering (or increasing) the temperature of the heat medium near the sensor on the heat pump side, the heat pump can be started in response to the detection operation of the temperature sensor of the heat storage tank. .

従って、蓄熱槽の温度が設定温度より低く(高く)、か
つ、更に降下(上昇)を続ける状態でありながら、ヒー
トポンプは起動しないといったことを回避でき、蓄熱槽
内の温度制御をより確実に行えるに至った。
Therefore, it is possible to avoid the situation where the heat pump does not start even if the temperature of the heat storage tank is lower (higher) than the set temperature and continues to drop (rise), and the temperature inside the heat storage tank can be controlled more reliably. reached.

〔実施例〕〔Example〕

第1図に示すように、蒸発器(1)、エンジン(2)駆
動型圧縮機(3)、凝縮器(4)、膨張弁(5)からな
る回路を構成するとともに、蒸発器(1)と冷水貯蔵用
蓄熱槽(a)との間に熱交換媒体の一例としての冷水循
環経路(6)及び凝縮器(4)と温水貯蔵用蓄熱槽(b
)との間に温水循環経路(7)を設け、ヒートポンプ(
8)を構成してある。前記蓄熱槽(a) 、 (b)は
共に温室(9)内に敷設された放熱器(10)に連結さ
れ、温室(9)を冷房状態に維持するのか1.それとも
暖房状態に維持するのかによって切換使用されるように
なっている。
As shown in Figure 1, the circuit consists of an evaporator (1), an engine (2) driven compressor (3), a condenser (4), and an expansion valve (5). A cold water circulation path (6) as an example of a heat exchange medium is provided between the condenser (4) and the heat storage tank for hot water storage (b).
) A hot water circulation path (7) is provided between the heat pump (
8) is configured. 1. Are the heat storage tanks (a) and (b) both connected to a radiator (10) installed in the greenhouse (9) to maintain the greenhouse (9) in a cooling state? It is designed to be used selectively depending on whether to maintain the heating state or to maintain the heating state.

ヒートポンプ(8)を暖房運転する場合について説明す
る。
A case where the heat pump (8) is operated for heating will be explained.

凝縮器(4)と温水貯蔵用蓄熱槽(b)との間に温水を
循環させるとともに、蒸発器(1)に対しては井戸水を
熱交換媒体として使用して暖房運転を行う。この場合に
蓄熱槽(b)に設けられた温度センサ(11)の温度検
出結果に基づいてヒートポンプ(8)を始動停止するよ
うに温度センサ(11)を制御装置(12)に出力する
ように構成してある。そして、前記ヒートポンプ(8)
の凝縮器(4)からの温水循環経路(7)の往路(7A
)出口近傍に温水の温度検出センサ(13)を設け、こ
の温度センサ(13)のヒートポンプ許容最高温度を感
知した場合にヒートポンプ(8)の運転を停止するよう
にしてある。
Hot water is circulated between the condenser (4) and the heat storage tank (b) for storing hot water, and the evaporator (1) is heated using well water as a heat exchange medium. In this case, the temperature sensor (11) is configured to output an output to the control device (12) to start and stop the heat pump (8) based on the temperature detection result of the temperature sensor (11) provided in the heat storage tank (b). It is configured. and the heat pump (8)
The outgoing path (7A) of the hot water circulation path (7) from the condenser (4)
) A hot water temperature detection sensor (13) is provided near the outlet, and the operation of the heat pump (8) is stopped when the temperature sensor (13) senses the maximum allowable temperature of the heat pump.

以上のようなヒートポンプ(8)の運転状態を説明する
と、第2図に示すように、負荷の減少につれてエンジン
回転数を落とし乍ら能力制御を行うよう゛に制御される
エンジン(1)駆動型ヒートポンプ(8)はヒートポン
プ側センサ(13)の検出値が許容温度を越えると一定
短時間(1)だけアイドル運転を行い停止する。この停
止中に、負荷が増大して蓄熱槽側センサ(11)がヒー
トポンプ運転開始温度を検出しても、前記ヒートポンプ
センサ(13)の検出値がヒートポンプ許容温度を越え
た状態を検出しているので、ヒートポンプ(8)は始動
しない。従って、ここで蓄熱槽(b)と凝縮器(4)と
の温水循環経路(7)中に設けられた温水循環ポンプ(
Pl)を作動させて、温水を循環させ温度の均一化を図
り、温水温度を前記許容温度以下にして、ヒートポンプ
(8)を作動させるようにしてある。
To explain the operating state of the heat pump (8) as described above, as shown in Fig. 2, it is an engine (1) driven type that is controlled to perform capacity control while reducing the engine speed as the load decreases. When the detected value of the heat pump side sensor (13) exceeds the permissible temperature, the heat pump (8) performs idling operation for a certain period of time (1) and then stops. During this stop, even if the load increases and the heat storage tank side sensor (11) detects the heat pump operation start temperature, the detected value of the heat pump sensor (13) detects a state in which the heat pump permissible temperature is exceeded. Therefore, the heat pump (8) will not start. Therefore, here, a hot water circulation pump (
The heat pump (8) is operated by operating the heat pump (8) to circulate hot water and make the temperature uniform, and to lower the temperature of the hot water to the above-mentioned allowable temperature or lower.

以上の運転状態を第3図に示すフローチャートで表して
ある。
The above operating conditions are represented by a flowchart shown in FIG.

〔別実施例〕[Another example]

冷水貯蔵蓄熱槽(a)を利用しての冷房運転の場合には
、前記温度センサ(11)を蒸発器(1)と蓄熱槽(a
)との冷水循環経路(6)の往路(6八)の蒸発器(1
)側出口に設けて、冷水温度が最低許容温度以下に低下
するとヒートポンプ(8)を停止させて、蒸発器(1)
側出口での凍結を防止するようにしてある。そして、蓄
熱槽(a)内冷却温度が運転開始温度に上昇して、ヒー
トポンプ(8)出口温度が許容温度以下であれば、冷水
循環経路(6)に設けられたポンプ(P2)を作動させ
てヒートポンプ(8)出口側の冷水温度を上昇させてヒ
ートポンプ(8)を起動させるようにしてある。
In the case of cooling operation using the cold water storage heat storage tank (a), the temperature sensor (11) is connected to the evaporator (1) and the heat storage tank (a).
) and the evaporator (1) on the outgoing route (68) of the cold water circulation route (6).
) side outlet, and when the cold water temperature drops below the minimum allowable temperature, the heat pump (8) is stopped and the evaporator (1)
It is designed to prevent freezing at the side exit. If the cooling temperature in the heat storage tank (a) rises to the operation start temperature and the outlet temperature of the heat pump (8) is below the allowable temperature, the pump (P2) provided in the cold water circulation path (6) is activated. The temperature of the cold water on the outlet side of the heat pump (8) is raised to start the heat pump (8).

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

図面は本発明に係る空調用ヒートポンプの実施例を示し
、第1図は全体構成図、第2図はヒートポンプの作動経
過を示すタイムチャート、第3図はフローチャートであ
る。 (6,7)・・・・・・熱交換媒体循環経路、(6A、
7A)・・・・・・往路、(8)・・・・・化−トポン
プ、(1113)・旧・・センサ、(12)・・・・・
・制御装置、(a、b)・・・・・・蓄熱槽、(P+、
h)・・・・・・ポンプ。
The drawings show an embodiment of the air conditioning heat pump according to the present invention, in which FIG. 1 is an overall configuration diagram, FIG. 2 is a time chart showing the operation progress of the heat pump, and FIG. 3 is a flow chart. (6,7)...Heat exchange medium circulation path, (6A,
7A)... Outward trip, (8)... conversion pump, (1113) old... sensor, (12)...
・Control device, (a, b)... Heat storage tank, (P+,
h)...Pump.

Claims (1)

【特許請求の範囲】[Claims] ヒートポンプ(8)と蓄熱槽(aまたはb)との間に熱
交換媒体循環経路(6または7)を設けるとともに蓄熱
槽(aまたはb)に設けられた熱交換媒体温検出センサ
(11)の検出結果に基づいてヒートポンプ(8)を能
力制御するように構成してある空調用ヒートポンプであ
って、ヒートポンプ(8)から蓄熱槽(aまたはb)へ
の往路(6Aまたは7A)内で、かつ、ヒートポンプ(
8)の出口近傍に熱交換媒体温検出センサ(13)を設
け、この検出センサ(13)及び蓄熱槽側検出センサ(
11)何れか一方の検出結果が、夫々に対して設定され
た設定温度より低い場合(温水製造)、又は、設定温度
より高い場合(冷水製造)にはヒートポンプ(8)の運
転を許容させるとともに、蓄熱槽用検出センサ(11)
がヒートポンプ(8)始動温度を検出した場合にヒート
ポンプ(8)と蓄熱槽(aまたはb)との熱交換媒体循
環ポンプ(P_1またはP_2)を駆動させる制御装置
(12)を備えてある空調用ヒートポンプ。
A heat exchange medium circulation path (6 or 7) is provided between the heat pump (8) and the heat storage tank (a or b), and a heat exchange medium temperature detection sensor (11) provided in the heat storage tank (a or b) is installed. An air-conditioning heat pump configured to control the capacity of the heat pump (8) based on the detection result, the heat pump is configured to control the capacity of the heat pump (8) in the outward path (6A or 7A) from the heat pump (8) to the heat storage tank (a or b), and ,heat pump(
A heat exchange medium temperature detection sensor (13) is provided near the outlet of the heat storage tank side (
11) If either of the detection results is lower than the set temperature set for each (hot water production) or higher than the set temperature (cold water production), the heat pump (8) is allowed to operate; , detection sensor for heat storage tank (11)
An air conditioner equipped with a control device (12) that drives a heat exchange medium circulation pump (P_1 or P_2) between the heat pump (8) and the heat storage tank (a or b) when the heat pump (8) starting temperature is detected by the heat pump (8). heat pump.
JP60151053A 1985-07-08 1985-07-08 Air-conditioning heat pump Pending JPS6210535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60151053A JPS6210535A (en) 1985-07-08 1985-07-08 Air-conditioning heat pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60151053A JPS6210535A (en) 1985-07-08 1985-07-08 Air-conditioning heat pump

Publications (1)

Publication Number Publication Date
JPS6210535A true JPS6210535A (en) 1987-01-19

Family

ID=15510267

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60151053A Pending JPS6210535A (en) 1985-07-08 1985-07-08 Air-conditioning heat pump

Country Status (1)

Country Link
JP (1) JPS6210535A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005073650A1 (en) 2004-01-20 2005-08-11 Carrier Corporation Energy-efficient heat pump water heater
CN102252460A (en) * 2011-05-11 2011-11-23 吴忠南 Improved structure of natural heat collector
EP2213962A3 (en) * 2009-01-28 2014-12-03 SANYO Electric Co., Ltd. Refrigerating apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005073650A1 (en) 2004-01-20 2005-08-11 Carrier Corporation Energy-efficient heat pump water heater
EP1711759A1 (en) * 2004-01-20 2006-10-18 Carrier Corporation Energy-efficient heat pump water heater
US7225629B2 (en) * 2004-01-20 2007-06-05 Carrier Corporation Energy-efficient heat pump water heater
EP1711759A4 (en) * 2004-01-20 2009-12-02 Carrier Corp Energy-efficient heat pump water heater
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