JP2006046880A - Control device for hybrid air conditioner - Google Patents

Control device for hybrid air conditioner Download PDF

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JP2006046880A
JP2006046880A JP2004249345A JP2004249345A JP2006046880A JP 2006046880 A JP2006046880 A JP 2006046880A JP 2004249345 A JP2004249345 A JP 2004249345A JP 2004249345 A JP2004249345 A JP 2004249345A JP 2006046880 A JP2006046880 A JP 2006046880A
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Satoyuki Tsubaki
智行 椿
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a hybrid air conditioning control device that can efficiently operate an air conditioner having air-cooled and water-cooled heat exchangers and cause it to function as an air conditioner even when either heat exchanger fails. <P>SOLUTION: The device is for controlling a hybrid air conditioner 1 having a first path 4B with an air-cooled heat exchanger 5 for heat exchange via gas with a heat exchange medium circulated in a passage 4 for circulating the heat exchange medium to and from air conditioning equipment 11, a second path 4A with a water-cooled heat exchanger 20 for heat exchange via cooling water with the heat exchange medium circulated in the passage, switch means 22 to 25 for switching the path in which the heat exchange medium flows to the first path or second path, and a cooling water path 30 for circulating the cooling water to the water-cooled heat exchanger 20. The switch means are controlled to switch the path in which the heat exchange medium flows to the first path 4B if temperature information from temperature detection means 32 and 33 for detecting the temperature of the cooling water exceeds at least an upper limit temperature or upper limit temperature range, and to switch the path in which the heat exchange medium flows to the second path 4A if the detected temperature information falls below a lower limit temperature or lower limit temperature range. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、熱交換媒体を空気で熱交換する空冷式熱交換機と水熱源で熱交換する水冷式熱交換機を有するハイブリッドタイプの空調装置の制御に関する。  The present invention relates to control of a hybrid type air conditioner having an air-cooled heat exchanger that exchanges heat with a heat exchange medium and a water-cooled heat exchanger that exchanges heat with a water heat source.

空冷式の熱交換機となるヒートポンプを有する空調装置では、一般に直接膨張方式（以下、直膨方式）を用いて冷却及び加熱を行っている。以下、冷却サイクルを用いて冷却システムについて説明すると、直膨方式は室内に設置された蒸発器に熱交換媒体を送り、コイルの中で膨張気化させてコイルを冷却し、通過する空気と熱交換をし、その空気より吸熱を行っている。本空調装置は、室外に設置された凝縮器で空気と直接熱交換を行う構造であるため、構造が簡単である反面、放熱する空気温度（外気温度）によってその性能が大きく変化する特性となっている。  In an air conditioner having a heat pump serving as an air-cooled heat exchanger, cooling and heating are generally performed using a direct expansion method (hereinafter referred to as a direct expansion method). Hereinafter, the cooling system will be described using a cooling cycle. In the direct expansion method, a heat exchange medium is sent to an evaporator installed in a room, and the coil is expanded and vaporized in the coil to cool the coil and exchange heat with the passing air. It absorbs heat from the air. Since this air conditioner has a structure in which heat is exchanged directly with air using a condenser installed outside the room, the structure is simple, but the performance varies greatly depending on the air temperature (outside air temperature) to dissipate heat. ing.

一方、空冷式に比べて熱交換率が良いことで、水冷式の熱交換機としてのヒートポンプが種々提案されている。ここで空冷式と水冷式のヒートポンプの差を冷却サイクルで説明する。この水冷式のヒートポンプは、熱交換媒体を水熱源とする地下水、クーリングタワー内の水等の冷却水に放熱するので、空冷式に比べて熱交換性能が安定する特性がある。しかしながら、冷却水への放熱方式を行おうとしても、この冷却水として水道水を利用するとコストが高く、地下水を利用すると、汲み上げ規制のある地域では十分に利用できるものとは限らない。また、冷却水として水または不凍液を循環させる経路を地中に埋設して熱交換させる場合、ヒートポンプの原理的な問題から冷却水の温度がある一定温度を越えると、冷却水と熱交換媒体との間で熱交換を行えなくなる。  On the other hand, various heat pumps as water-cooled heat exchangers have been proposed because of their better heat exchange rate than air-cooled. Here, the difference between the air-cooled heat pump and the water-cooled heat pump will be described in terms of the cooling cycle. This water-cooled heat pump dissipates heat to cooling water such as ground water using a heat exchange medium as a water heat source, water in a cooling tower, etc., and thus has a characteristic that heat exchange performance is more stable than air-cooled heat pumps. However, even if a heat dissipation method for cooling water is used, the cost is high if tap water is used as the cooling water, and the use of groundwater may not be sufficient in areas where pumping is restricted. In addition, when heat exchange is performed by embedding a path for circulating water or antifreeze as cooling water, if the temperature of the cooling water exceeds a certain temperature due to the principle problem of the heat pump, the cooling water and the heat exchange medium Heat exchange between the two.

ここで、冷却水を熱源とするヒートポンプの原理について説明する。ヒートポンプは、図９、図１０に示すように、エンタルピー（ｈ）と圧力（ｐ）に対して用いる熱交換媒体の飽和線上に変化を示した図で説明される。ヒートポンプは、加熱時と冷却時で熱交換媒体の動きが逆になるが、以下に示すように、加熱時及び冷却時においても、水冷式の方の熱交換効率が向上する。図９を用いて加熱時のサイクルを説明する。ヒートポンプにおいては、蒸発器が熱源との熱交換機分となり、ここが空冷冷却機と水冷冷却機で異なる部分となる。水の熱伝達率は、空気のそれと比べて数百倍と大変大きく、また、熱容量も大きくなることから、効率的に吸熱反応が行われ、ヒートポンプの動力費（電気消費量）が空気の場合と比べて小さく、効率が向上しており、加熱能力がよくなる。図１０を用いて冷却時のサイクルを説明すると、熱交換媒体の循環サイクルは加熱時と逆向きとなり、凝縮器での放熱が冷却機の仕事となる。この効率も加熱時と同様に熱伝達率が、圧倒的に空気と比べて高いことから、水による放熱が少ない動力費で行われ、効率が向上して冷却能力もよくなる。
このような特性を鑑み、近年、空冷式と水冷式の熱交換機を備えたハイブリッド空調装置が、例えば特許文献１、２で提案されている。Here, the principle of a heat pump using cooling water as a heat source will be described. As shown in FIGS. 9 and 10, the heat pump is described with a diagram showing a change on a saturation line of a heat exchange medium used for enthalpy (h) and pressure (p). In the heat pump, the movement of the heat exchange medium is reversed between heating and cooling. However, as shown below, the heat exchange efficiency of the water-cooled type is improved also during heating and cooling. The cycle during heating will be described with reference to FIG. In the heat pump, the evaporator serves as a heat exchanger with the heat source, and this is a different part between the air-cooled cooler and the water-cooled cooler. The heat transfer coefficient of water is very large, several hundred times that of air, and the heat capacity is also large, so the endothermic reaction is carried out efficiently, and the heat pump power cost (electricity consumption) is air. The efficiency is improved and the heating capacity is improved. The cycle during cooling will be described with reference to FIG. 10. The circulation cycle of the heat exchange medium is opposite to that during heating, and the heat radiation in the condenser is the work of the cooler. Since this heat efficiency is overwhelmingly higher than that of air as in the case of heating, it is performed at a power cost with less heat dissipation by water, improving efficiency and improving cooling capacity.
In view of such characteristics, in recent years, for example, Patent Documents 1 and 2 have proposed hybrid air conditioners including air-cooled and water-cooled heat exchangers.

特開２００４−１１６８００JP 2004-116800 A 特開２００４−１１６８０６JP-A-2004-116806

特許文献１，２には、空冷式と水冷式の熱交換機を有する空調装置が提案されているが、冷却、加熱および除湿の運転時において、空冷式と水冷式の熱交換機の最適なタイミングで切換る事は記載されていない。これら空冷式と水冷式の熱交換機の切換えは、所謂冷凍サイクルを備えた各種装置、とりわけ空調装置を効率的に運転するのに非常に重要な課題となる。また、水冷式の熱交換機を用いた冷却、加熱、除湿の各運転時において、水熱源からの冷却水の供給が立たれてしまうと、水冷式の熱交換機による熱交換が行われず、装置の停止や故障の原因となる。
本発明は、空冷式と水冷式の熱交換機を有する空調装置を効率良く運転させつつ、何れかの熱交換機が故障した場合でも、空調装置として機能させることができるハイブリッド空調制御装置を提供することを、その目的とする。Patent Documents 1 and 2 propose an air conditioner having an air-cooling type and a water-cooling type heat exchanger, but at the optimal timing of the air-cooling type and the water-cooling type heat exchanger during cooling, heating and dehumidifying operations. Switching is not described. Switching between these air-cooled and water-cooled heat exchangers is a very important issue for efficiently operating various devices equipped with a so-called refrigeration cycle, especially air conditioners. In addition, during cooling, heating, and dehumidifying operations using a water-cooled heat exchanger, if cooling water is supplied from the water heat source, heat exchange by the water-cooled heat exchanger is not performed, and the device It may cause a stop or failure.
The present invention provides a hybrid air-conditioning control device capable of functioning as an air-conditioning device even when one of the heat exchangers breaks down while efficiently operating an air-conditioning device having air-cooled and water-cooled heat exchangers. Is the purpose.

本発明は、空調機器との間で熱交換媒体を循環させる流路内を循環する熱交換媒体に対して気体を用いて熱交換する空冷式熱交換機が設けらたれ第１の経路と、流路内を循環する熱交換媒体に対して冷却水を用いて熱交換する水冷式熱交換機が設けられた第２の経路と、熱交換媒体が流れる経路を第１の経路または第２の経路に切換る切換手段と、水冷式熱交換機に冷却水を流通させる冷却水経路とを有するハイブリッド空調装置を制御する装置であって、冷却水の温度を検知する温度検知手段からの温度情報が少なくとも上限温度または上限温度範囲を超える場合に、熱交換媒体が流れる経路を第１の経路へ切換え、検知した温度情報が下限温度または下限温度範囲を超える場合には熱交換媒体が流れる経路を第２の経路へ切換るように切換手段を制御する冷却モードを少なくとも備えている。
このような構成においては、冷却水の温度が少なくとも上限温度または上限温度範囲を超えると、熱交換媒体が流れる経路が第１の経路へ切換えられ、熱交換媒体が空冷式熱交換機へ案内され、冷却水の温度が下限温度または下限温度範囲を超えると熱交換媒体が流れる経路が第２の経路へ切換えされ、熱交換媒体が水冷式熱交換機へと案内される。The present invention includes a first path provided with an air-cooled heat exchanger that exchanges heat using a gas with respect to a heat exchange medium that circulates in a flow path that circulates the heat exchange medium with an air conditioner, A second path provided with a water-cooled heat exchanger for exchanging heat using cooling water for a heat exchange medium circulating in the path, and a path through which the heat exchange medium flows as a first path or a second path An apparatus for controlling a hybrid air conditioner having switching means for switching and a cooling water path for circulating cooling water to the water-cooled heat exchanger, wherein temperature information from the temperature detecting means for detecting the temperature of the cooling water is at least an upper limit When the temperature or upper limit temperature range is exceeded, the path through which the heat exchange medium flows is switched to the first path, and when the detected temperature information exceeds the lower limit temperature or lower limit temperature range, the path through which the heat exchange medium flows is changed to the second path. Switch to route It comprises at least a cooling mode for controlling the means.
In such a configuration, when the temperature of the cooling water exceeds at least the upper limit temperature or the upper limit temperature range, the path through which the heat exchange medium flows is switched to the first path, and the heat exchange medium is guided to the air-cooled heat exchanger, When the temperature of the cooling water exceeds the lower limit temperature or the lower limit temperature range, the path through which the heat exchange medium flows is switched to the second path, and the heat exchange medium is guided to the water-cooled heat exchanger.

本発明は、空調機器との間で熱交換媒体を循環させる流路内を循環する熱交換媒体に対して気体を用いて熱交換する空冷式熱交換機が設けらたれ第１の経路と、流路内を循環する熱交換媒体に対して冷却水を用いて熱交換する水冷式熱交換機が設けられた第２の経路と、熱交換媒体が流れる経路を第１の経路または第２の経路に切換る切換手段と、水冷式熱交換機に冷却水を流通させる冷却水経路とを有するハイブリッド空調装置を制御する装置であって、冷却水の温度を検知する温度検知手段からの温度情報が少なくとも下限温度または下限温度範囲を超える場合には熱交換媒体が流れる経路を第１の経路へ切換え、温度情報が上限温度または上限温度範囲を超える場合には熱交換媒体が流れる経路を第２の経路へ切換るように切換手段を制御する加熱モードを少なくとも備えている。
このような構成においては、冷却水の温度が少なくとも下限温度または下限温度範囲を超えると熱交換媒体が流れる経路が第１の経路へ切換えられて熱交換媒体が空冷式熱交換機へ案内され、冷却水の温度が上限温度または上限温度範囲を超える場合には熱交換媒体が流れる経路が第２の経路へ切換えられ熱交換媒体が水冷式熱交換機へ案内される。The present invention includes a first path provided with an air-cooled heat exchanger that exchanges heat using a gas with respect to a heat exchange medium that circulates in a flow path that circulates the heat exchange medium with an air conditioner, A second path provided with a water-cooled heat exchanger for exchanging heat using cooling water for a heat exchange medium circulating in the path, and a path through which the heat exchange medium flows as a first path or a second path A device for controlling a hybrid air conditioner having switching means for switching and a cooling water path for circulating cooling water to the water-cooled heat exchanger, wherein temperature information from the temperature detecting means for detecting the temperature of the cooling water is at least a lower limit When the temperature or the lower limit temperature range is exceeded, the path through which the heat exchange medium flows is switched to the first path, and when the temperature information exceeds the upper limit temperature or the upper limit temperature range, the path through which the heat exchange medium flows is changed to the second path. Switching means to switch And it includes at least a Gosuru heating mode.
In such a configuration, when the temperature of the cooling water exceeds at least the lower limit temperature or the lower limit temperature range, the path through which the heat exchange medium flows is switched to the first path, and the heat exchange medium is guided to the air-cooled heat exchanger and cooled. When the water temperature exceeds the upper limit temperature or the upper limit temperature range, the path through which the heat exchange medium flows is switched to the second path, and the heat exchange medium is guided to the water-cooled heat exchanger.

本発明にかかるハイブリッド空調装置の制御装置では、冷却モードあるいは加熱モードの何れかを備えて入れはよく、空調装置を、冷却、冷凍、除湿あるいは加熱専用の空調装置として機能させることができるとともに、冷却、加熱の各モードを備えた場合には冷却と加熱を行える空調装置として機能させることができるようになる。除湿は冷凍サイクル的に言うと、冷却の一機能として捉えることができるので、冷却モードを有していれば達成することができる。  In the control device of the hybrid air conditioner according to the present invention, it can be provided with either a cooling mode or a heating mode, and the air conditioner can function as an air conditioner dedicated to cooling, freezing, dehumidification or heating, When each mode of cooling and heating is provided, it can function as an air conditioner capable of cooling and heating. Dehumidification can be considered as a function of cooling in terms of the refrigeration cycle, and can be achieved if it has a cooling mode.

本発明にかかるハイブリッド空調装置の制御装置では、冷却水経路の冷却水の圧力を検知する水圧検知手段からの検知情報を取り込み、その検知情報が所定圧に満たない場合には熱交換媒体が流れる経路を第１の経路へ切換えるように切換手段を制御することを特徴としている。水圧検知手段は、水冷式熱交換機に対する冷却水の流入側あるいは吐出側の何れかに設ければよい。流入側に設けてその検知信号を切換手段の切換制御のパラメーターとした場合、水冷式熱交換機に対する冷却水の搬送系に異常がある場合に、空冷式熱交換機に熱交換媒体が案内されることになる。吐出側に設けてその検知信号を切換手段の切換制御のパラメーターとする場合、水冷式熱交換機内あるいは吐出側の搬送系の異常に以上ある場合に、空冷式熱交換機に熱交換媒体が案内されることになり、空調装置の動作を停止させずに済む。  In the control device of the hybrid air conditioner according to the present invention, the detection information from the water pressure detection means for detecting the pressure of the cooling water in the cooling water path is taken in, and the heat exchange medium flows when the detection information is less than the predetermined pressure. The switching means is controlled to switch the route to the first route. The water pressure detecting means may be provided on either the cooling water inflow side or the discharge side for the water-cooled heat exchanger. When the detection signal is provided on the inflow side and the detection signal is used as a parameter for switching control of the switching means, the heat-exchange medium is guided to the air-cooled heat exchanger when there is an abnormality in the cooling water transport system for the water-cooled heat exchanger. become. When provided on the discharge side and the detection signal is used as a parameter for switching control of the switching means, the heat-exchange medium is guided to the air-cooled heat exchanger when there is an abnormality in the water-cooled heat exchanger or on the discharge-side transport system. Therefore, it is not necessary to stop the operation of the air conditioner.

水冷式熱交換機に対する冷却水の異常検知時の対策としては、冷却水経路の冷却水の流量を流量検知手段で検知し、その検知情報が所定流量に満たない場合に、熱交換媒体が流れる経路を第１の経路へ切換えるように切換手段を制御してもよい。この場合でも、流入側に流量検知手段を設けてその検知信号を切換手段の切換制御のパラメーターとした場合、水冷式熱交換機に対する冷却水の搬送系に異常がある場合に空冷式熱交換機に熱交換媒体が案内されることになる。吐出側に設けてその検知信号を切換手段の切換制御のパラメーターとした場合、水冷式熱交換機内でのスケール付着や吐出側の搬送系に異常がある場合に、空冷式熱交換機に熱交換媒体が案内されることになり、空調装置の動作を停止させずに済む。  As a countermeasure when detecting an abnormality in the cooling water for the water-cooled heat exchanger, the flow of the heat exchange medium is detected when the flow rate of the cooling water in the cooling water path is detected by the flow rate detection means and the detected information is less than the predetermined flow rate. The switching means may be controlled to switch to the first path. Even in this case, if the flow rate detection means is provided on the inflow side and the detection signal is used as a switching control parameter of the switching means, the air-cooled heat exchanger is heated if there is an abnormality in the cooling water transport system for the water-cooled heat exchanger. The exchange medium will be guided. When the detection signal is provided on the discharge side and used as a switching control parameter for the switching means, if there is an abnormality in scale adhesion in the water-cooled heat exchanger or the transport system on the discharge side, the air-cooled heat exchanger has a heat exchange medium. Therefore, it is not necessary to stop the operation of the air conditioner.

水冷式熱交換機の異常検知のパラメーターとしては、冷却水に関する各情報ではなく、水冷式熱交換機の表面温度を検知する温度検知手段からの検知情報をパラメーターとしてもよい。この場合、検知された温度情報が所定温度よりも高い場合、熱交換媒体が流れる経路を第１の経路へ切換えるように切換手段を制御する。水冷式熱交換機の温度上昇は、水冷式熱交換機内を冷却水が流れない異常な状態もしくは冷却水の温度上昇により交換機全体、あるいは部分的な温度上昇と見なすことができるので、このような場合には安全性の観点から熱交換媒体の経路を第１の経路へと切換ることで、空冷式熱交換機で熱交換を行えるため、空調装置の動作を停止させずに済む。  As a parameter for detecting an abnormality of the water-cooled heat exchanger, detection information from a temperature detecting means for detecting the surface temperature of the water-cooled heat exchanger may be used as a parameter instead of each piece of information regarding the cooling water. In this case, when the detected temperature information is higher than the predetermined temperature, the switching unit is controlled to switch the path through which the heat exchange medium flows to the first path. In such a case, the temperature rise of the water-cooled heat exchanger can be considered as an entire exchanger or a partial temperature rise due to an abnormal state where the cooling water does not flow in the water-cooled heat exchanger or the temperature rise of the cooling water. From the viewpoint of safety, the heat exchange medium path is switched to the first path so that heat exchange can be performed by the air-cooled heat exchanger, so that the operation of the air conditioner need not be stopped.

本形態にかかるハイブリッド空調装置の制御装置では、切換手段を制御して熱交換媒体が流れる経路を第１の経路へ切換えた後、冷却水経路を開閉する開閉手段を間接的に開閉制御することを特徴としている。第１の経路へ切換ると熱交換媒体は空冷式熱交換機へ案内されるが、水冷式熱交換機や冷却水経路には冷却水が滞停している。この冷却水の停滞を改善しなければ、冷却水の温度低減率は低く、水熱交換率の良い水冷式熱交換機による熱交換を行えない。このように、空冷式熱交換機による熱交換時においても、冷却水経路を開閉する開閉手段を間接的に開閉制御することで、冷却水を循環させることができるので冷却水の迅速な温度低減を図ることができる。この開閉手段の開閉は間欠的な制御できなく、時間や回数を予め設定しておき、これら値をパラメーターとして開閉制御するようにしても良い。  In the control device of the hybrid air conditioner according to the present embodiment, the switching means is controlled to switch the path through which the heat exchange medium flows to the first path, and then the opening / closing means for opening / closing the cooling water path is indirectly controlled to open / close. It is characterized by. When switching to the first path, the heat exchange medium is guided to the air-cooled heat exchanger, but the cooling water is stagnant in the water-cooled heat exchanger and the cooling water path. Unless the stagnation of the cooling water is improved, the temperature reduction rate of the cooling water is low, and heat exchange cannot be performed by a water-cooled heat exchanger having a good water heat exchange rate. Thus, even during heat exchange by an air-cooled heat exchanger, the cooling water can be circulated by indirectly controlling the opening and closing means for opening and closing the cooling water path, so that the temperature of the cooling water can be quickly reduced. Can be planned. The opening / closing of the opening / closing means cannot be intermittently controlled, and the opening / closing control may be performed by setting the time and the number of times in advance and using these values as parameters.

本発明によれば、冷却モード寺において、冷却水の温度が少なくとも上限温度または上限温度範囲を超えると、熱交換媒体が流れる経路が第１の経路へ切換えられ、熱交換媒体が空冷式熱交換機へ案内され、冷却水の温度が下限温度または下限温度範囲を超えると熱交換媒体が流れる経路が第２の経路へ切換えされ、熱交換媒体が水冷式熱交換機へと案内されるので、温度条件に応じて適宜、空冷式熱交換機と水冷式熱交換機の何れかに熱交換媒体が案内されて熱交換されるので、空冷式と水冷式の熱交換機を有する空調装置を効率良く運転させつつ、何れかの熱交換機が故障した場合でも空調装置として機能させることができる。
本発明によれば、加熱モード時において、冷却水の温度が少なくとも下限温度または下限温度範囲を超えると熱交換媒体が流れる経路が第１の経路へ切換えられて熱交換媒体が空冷式熱交換機へ案内され、冷却水の温度が上限温度または上限温度範囲を超える場合には熱交換媒体が流れる経路が第２の経路へ切換えられ熱交換媒体が水冷式熱交換機へ案内されるので、空冷式と水冷式の熱交換機を有する空調装置を効率良く運転させつつ、何れかの熱交換機が故障した場合でも空調装置として機能させることができる。According to the present invention, in the cooling mode temple, when the temperature of the cooling water exceeds at least the upper limit temperature or the upper limit temperature range, the path through which the heat exchange medium flows is switched to the first path, and the heat exchange medium is an air-cooled heat exchanger. When the temperature of the cooling water exceeds the lower limit temperature or the lower limit temperature range, the path through which the heat exchange medium flows is switched to the second path, and the heat exchange medium is guided to the water-cooled heat exchanger. As appropriate, the heat exchange medium is guided to either the air-cooled heat exchanger or the water-cooled heat exchanger for heat exchange, so that the air-conditioning apparatus having the air-cooled and water-cooled heat exchangers is operated efficiently, Even if any of the heat exchangers fails, it can function as an air conditioner.
According to the present invention, in the heating mode, when the temperature of the cooling water exceeds at least the lower limit temperature or the lower limit temperature range, the path through which the heat exchange medium flows is switched to the first path, and the heat exchange medium becomes the air-cooled heat exchanger. If the temperature of the cooling water exceeds the upper limit temperature or the upper limit temperature range, the path through which the heat exchange medium flows is switched to the second path and the heat exchange medium is guided to the water-cooled heat exchanger. An air conditioner having a water-cooled heat exchanger can be operated efficiently, and can function as an air conditioner even when one of the heat exchangers fails.

以下、本発明の実施の形態について、図面を用いて説明する。図１は、ハイブリッド空調装置を示す概略図である。図１において、符号１は室内に装着される空調機器としてのファンコイルユニット１１と接続する室外機１の内部構造を示す。この室外機１は、そのケーシング１００の内部に、電磁的の四方弁２、膨張弁３、四方弁２と膨張弁３とを結ぶ流路４上に配置された空冷式熱交換機５、四方弁２と圧縮機６とを結ぶ低圧の流路７上にアキュムレータ８と低圧開閉弁９、四方弁２と膨張弁３の流路４を閉鎖して室外機１とファンコイルユニット１１を切り離し可能とする停止弁１０Ａ，１０Ｂ、水冷式熱交換機２０、水冷式熱交換機２０に冷却水を循環させる冷却水経路３０がそれぞれ設けられている。空冷熱交換５と対向する部位には、駆動モータ１９によって回転駆動される冷却用のファン１８が設けられている。圧縮機６と四方弁２とを結ぶ高圧の流路１２には、周知の消音器１３と圧力開閉弁１４が設けられている。これら各構成要素は、流路４内を循環する熱交換媒体の熱交換を行い、冷却と加熱を行う空冷式熱交換機と冷凍サイクルの構成要素である。熱交換媒体は、最適な性能を得られる量が流路４内に封入されている。熱交換媒体としては、科学冷媒として、ＣＦＣ系のＲ−１２、ＨＣＦＣ系のＲ−２２，Ｒ−１２３、ＨＦＣ系のＲ−１３４ａ，Ｒ−４０７（ＨＦＣ−３２、１２５ｄ、１３４ａ混合），Ｒ４１０Ａ（ＨＦＣ−３２、１２５混合）や、ＣＯ２やプロパン等の自然冷媒が挙げられる。  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a hybrid air conditioner. In FIG. 1, the code | symbol 1 shows the internal structure of the outdoor unit 1 connected with the fan coil unit 11 as an air conditioning apparatus with which indoors are mounted | worn. The outdoor unit 1 includes an electromagnetic four-way valve 2, an expansion valve 3, an air-cooled heat exchanger 5, a four-way valve disposed on a flow path 4 connecting the four-way valve 2 and the expansion valve 3. The outdoor unit 1 and the fan coil unit 11 can be separated by closing the accumulator 8, the low-pressure on-off valve 9, the four-way valve 2 and the expansion valve 3 on the low-pressure channel 7 connecting the compressor 2 and the compressor 6. Stop valve 10A, 10B to perform, the water cooling type heat exchanger 20, and the cooling water path | route 30 which circulates cooling water to the water cooling type heat exchanger 20 are each provided. A cooling fan 18 that is rotationally driven by a drive motor 19 is provided at a portion facing the air cooling heat exchange 5. A known silencer 13 and a pressure opening / closing valve 14 are provided in the high-pressure flow path 12 connecting the compressor 6 and the four-way valve 2. Each of these components is a component of an refrigeration cycle and an air-cooled heat exchanger that performs heat exchange of the heat exchange medium circulating in the flow path 4 and performs cooling and heating. The amount of heat exchange medium that can obtain optimum performance is enclosed in the flow path 4. As a heat exchange medium, as a scientific refrigerant, CFC R-12, HCFC R-22, R-123, HFC R-134a, R-407 (HFC-32, 125d, 134a mixed), R410A (HFC-32, 125 mixed) and natural refrigerants such as CO2 and propane.

水冷式熱交換機２０は、空冷式熱交換機５を迂回するように流路４に接続された流路４Ａに配設されている。この流路４Ａは、流路４内を流れる熱交換媒体を水冷式熱交換機２０へ案内する第２の経路を構成する。また、水冷式熱交換機２０に対して迂回流路となる流路４Ｂには空冷式熱交換機５が配設されている。流路４Ｂは第１の経路を構成する。水冷式熱交換機２０の上流側と下流側に位置する流路４Ａには電磁弁２２，２３が、水冷式熱交換機５の上流側と下流側に位置する経路４Ｂには電磁弁２４，２５がそれぞれ配設されている。これら電磁弁は、オフ状態では各経路を閉じて水冷式熱交換機２０と空冷式熱交換機５への熱交換媒体の流入を停止し、オン状態となると各経路を開き各熱交換機に対して熱交換媒体を流入するように構成されている。  The water-cooled heat exchanger 20 is disposed in the flow path 4A connected to the flow path 4 so as to bypass the air-cooled heat exchanger 5. This flow path 4 </ b> A constitutes a second path for guiding the heat exchange medium flowing in the flow path 4 to the water-cooled heat exchanger 20. An air-cooled heat exchanger 5 is disposed in the flow path 4 </ b> B serving as a bypass flow path for the water-cooled heat exchanger 20. The flow path 4B constitutes a first path. Solenoid valves 22 and 23 are provided in the flow path 4A located upstream and downstream of the water-cooled heat exchanger 20, and electromagnetic valves 24 and 25 are provided in the path 4B located upstream and downstream of the water-cooled heat exchanger 5. Each is arranged. These solenoid valves close each path in the off state to stop the flow of the heat exchange medium into the water-cooled heat exchanger 20 and the air-cooled heat exchanger 5, and when turned on, open each path and heat each heat exchanger. The exchange medium is configured to flow in.

水冷式熱交換機２０は、冷却水を、その内部に導入する流入口２０Ａ、内部の通過して熱交換された冷却水を排出する吐出口２０Ｂとを備えている。流入口２０Ａには冷却水経路３０を構成する給水流路３４の一端３４Ａが接続され、吐出口２０Ｂには冷却水経路３０を構成する排水流路３７の一端３７Ａがそれぞれ接続されている。給水流路３４には、その他端３４Ｂ側に接続される図示しないポンプから冷却水が供給される。この冷却水は水冷式熱交換機２０内に導入されて排水流路３７から排出される。すなわち、冷却水経路３０は、水冷式熱交換機２０に冷却水を流通する経路であり、水冷式熱交換機２０は、流通する冷却水によって、ファンコイルユニット１１との間で循環する熱交換媒体を冷却あるいは加熱するように構成されている。本形態において、冷却水を送るポンプの制御は別な系統で適宜オン／オフ制御される。  The water-cooled heat exchanger 20 includes an inlet 20A that introduces cooling water into the inside thereof, and a discharge port 20B that discharges the cooling water that has passed through the inside and exchanged heat. One end 34A of a water supply passage 34 constituting the cooling water passage 30 is connected to the inflow port 20A, and one end 37A of a drain passage 37 constituting the cooling water passage 30 is connected to the discharge port 20B. Cooling water is supplied to the water supply channel 34 from a pump (not shown) connected to the other end 34B side. This cooling water is introduced into the water-cooled heat exchanger 20 and discharged from the drainage channel 37. That is, the cooling water path 30 is a path for circulating cooling water to the water-cooled heat exchanger 20, and the water-cooled heat exchanger 20 uses a circulating water to flow a heat exchange medium that circulates between the fan coil unit 11. It is configured to cool or heat. In this embodiment, the pump for feeding the cooling water is appropriately turned on / off by another system.

給水流路３４には、水冷式熱交換機２０への冷却水の給水温度を検知する温度検知手段としての給水温度センサ３３と、冷却水経路３０内の冷却水の圧力のうち給水圧を検知する水圧検知手段としての水圧検知センサ３２と、給水流路３４を開閉する開閉手段としての電磁弁３１とが設けられている。給水温度センサ３３は、給水口３３の近傍に配置され、水圧検知センサ３２は、温度センサ３３と電磁弁３１との間に配置されている。排水流路３７には、水冷式熱交換機２０で熱交換された冷却水の吐出温度を検知する温度検知手段としての吐出温度センサ３５と、冷却水経路３０の冷却水の流量のうち、水冷式熱交換機２０からの排出される冷却水の流量を検知する流量検知手段としての流量検知センサ３６とが設けられている。吐出温度センサ３５は吐出口２０Ｂの近傍に配置され、流量検知センサ３６は吐出温度センサよりも下流側に配置されている。  The feed water flow path 34 detects the feed water pressure of the feed water temperature sensor 33 as temperature sensing means for sensing the feed water temperature of the coolant to the water-cooled heat exchanger 20 and the coolant pressure in the coolant passage 30. A water pressure detection sensor 32 as a water pressure detection means and an electromagnetic valve 31 as an opening / closing means for opening and closing the water supply flow path 34 are provided. The water supply temperature sensor 33 is disposed in the vicinity of the water supply port 33, and the water pressure detection sensor 32 is disposed between the temperature sensor 33 and the electromagnetic valve 31. The drainage flow path 37 includes a discharge temperature sensor 35 as temperature detecting means for detecting the discharge temperature of the cooling water heat-exchanged by the water-cooled heat exchanger 20, and the water-cooling type of the flow rate of the cooling water in the cooling water path 30. A flow rate detection sensor 36 is provided as flow rate detection means for detecting the flow rate of the cooling water discharged from the heat exchanger 20. The discharge temperature sensor 35 is disposed in the vicinity of the discharge port 20B, and the flow rate detection sensor 36 is disposed on the downstream side of the discharge temperature sensor.

アキュムレータ８の一次側に位置する流路７と水冷式熱交換機２０とは、第３の経路２６で接続されている。この第３の経路２６は、電磁弁２２，２３がオフ、かつ電磁弁２４，２５がオンの時に、水冷式熱交換機２０内にある熱交換媒体をアキュムレータ８に導入するための媒体回収通路を構成する。アキュムレータ８の一次側に位置する流路７と空冷式熱交換機５とは、第４の経路２７で接続されている。この第４の経路２７は、電磁弁２２，２３がオン、かつ電磁弁２４，２５がオフの時に、空冷式熱交換機５内にある熱交換媒体をアキュムレータ８に導入するための媒体回収通路を構成する。これら第３及び第４の経路２６，２７には、同経路をそれぞれ開閉可能とする開閉手段としての電磁式の開閉弁２８，２９が設けられている。すなわち、電磁弁２２，３３及び電磁弁２４，２５は、そのオン／オン状態に応じて経路４Ａと経路４Ｂとを切換る切換手段を構成している。  The flow path 7 located on the primary side of the accumulator 8 and the water-cooled heat exchanger 20 are connected by a third path 26. The third path 26 is a medium recovery passage for introducing the heat exchange medium in the water-cooled heat exchanger 20 into the accumulator 8 when the solenoid valves 22 and 23 are off and the solenoid valves 24 and 25 are on. Constitute. The flow path 7 located on the primary side of the accumulator 8 and the air-cooled heat exchanger 5 are connected by a fourth path 27. The fourth path 27 is a medium recovery passage for introducing the heat exchange medium in the air-cooled heat exchanger 5 to the accumulator 8 when the electromagnetic valves 22 and 23 are on and the electromagnetic valves 24 and 25 are off. Constitute. The third and fourth paths 26 and 27 are provided with electromagnetic on-off valves 28 and 29 as opening / closing means that can open and close the paths. That is, the solenoid valves 22 and 33 and the solenoid valves 24 and 25 constitute switching means for switching between the path 4A and the path 4B in accordance with the on / on state.

水冷式熱交換機２０と開閉弁２８の間の経路２６と、空冷式熱交換機５と開閉弁２９の間の経路２７には、周知のアクセルバルブ２６１、２７１が設けられている。これらアクセスバルブ２６１，２７１は、密閉回路として構成されている流路４に対して熱交換媒体を注入する際や、注入した熱交換媒体を流路４から抜く際に用いる一方向圧力弁であって、その開閉部に対して外部から所定の圧を加えないと開放しないように構成されている。符号３８は水冷式熱交換機２０の表面温度を温度検知手段としての表面温度センサ３８を示す。  Well-known accelerator valves 261 and 271 are provided in a path 26 between the water-cooled heat exchanger 20 and the on-off valve 28 and a path 27 between the air-cooled heat exchanger 5 and the on-off valve 29. These access valves 261 and 271 are one-way pressure valves used when injecting a heat exchange medium into the flow path 4 configured as a sealed circuit, or when removing the injected heat exchange medium from the flow path 4. The opening / closing portion is configured not to be opened unless a predetermined pressure is applied from the outside. Reference numeral 38 denotes a surface temperature sensor 38 that uses the surface temperature of the water-cooled heat exchanger 20 as temperature detection means.

駆動モータ１９、電磁弁２２，２３，２４，２５、開閉弁２８，２９及び電磁弁３１のオン／オフ制御は、図２に示す制御手段４０で制御されるようになっている。制御手段４０は、図示を省略したが、ＣＰＵ（中央処理装置）、Ｉ／Ｏ（入出力）ポート、ＲＯＭ（読み出し専用記憶装置）、ＲＡＭ（読み書き可能な記憶装置）およびタイマー等をそれぞれ備え、これらが信号バスによって接続された構成を有する周知のコンピュータで構成されている。制御手段４０の入力側には、水圧検知センサ３２，給水温度センサ３３、吐出温度センサ３５、流量検知センサ３６、表面温度検知センサ３８と、装置の操作部５０及び切換温度設定手段５５が接続されている。本形態において、各温度センサには周知のサーミスタを用いるが、これ以外の構成であっても無論構わない。操作部５０は、図３に示すように、冷却モードとなる冷房モードを選択する際に操作する冷房スイッチ５１と、加熱モードとなる暖房モードを選択する際に操作する暖房スイッチ５２と、除湿モードを選択する際に操作する除湿スイッチ５３と、電源をオン／オフする電源スイッチ５４とが設けられている。切換温度設定手段５５とは、制御手段４０に設定される後述の第１及び第２の所定上下温度と下限温度を変更するためのもので、この設定手段荷も受けた調整部を送付すると、上記各温度、すなわち、空冷式熱交換機５と水冷式熱交換機２０への経路を切換えるパラメーターとなる切換温度を任意に設定変更できるように構成されている。  The on / off control of the drive motor 19, the electromagnetic valves 22, 23, 24, 25, the on-off valves 28, 29 and the electromagnetic valve 31 is controlled by the control means 40 shown in FIG. Although not shown, the control means 40 includes a CPU (central processing unit), an I / O (input / output) port, a ROM (read-only storage device), a RAM (read / write storage device), a timer, and the like. These are configured by a known computer having a configuration connected by a signal bus. Connected to the input side of the control means 40 are a water pressure detection sensor 32, a feed water temperature sensor 33, a discharge temperature sensor 35, a flow rate detection sensor 36, a surface temperature detection sensor 38, an operation unit 50 of the apparatus, and a switching temperature setting means 55. ing. In this embodiment, a known thermistor is used for each temperature sensor. However, other configurations may be used. As shown in FIG. 3, the operation unit 50 includes a cooling switch 51 that is operated when selecting a cooling mode that is a cooling mode, a heating switch 52 that is operated when selecting a heating mode that is a heating mode, and a dehumidifying mode. A dehumidifying switch 53 that is operated when selecting a power source and a power switch 54 for turning on / off the power source are provided. The switching temperature setting means 55 is for changing first and second predetermined upper and lower temperatures and a lower limit temperature, which will be described later, set in the control means 40. When an adjustment unit that receives this setting means load is sent, Each of the above temperatures, that is, a switching temperature serving as a parameter for switching the path to the air-cooled heat exchanger 5 and the water-cooled heat exchanger 20 can be arbitrarily set and changed.

制御手段４０の出力側には、四方弁２、電磁弁２２〜２５、開閉弁２８，２９、電磁弁３１及び圧縮機６と駆動モータ１９が電気的に接続されている。制御手段４０のＲＯＭには、電磁弁２２，２３と開閉弁２９及び電磁弁２４，２５と開閉弁２８、駆動モータ１９をオン／オフするためのパラメーターとなる各種温度情報、所定圧、所定流量及び冷房モードと暖房モードが予め記憶されている。各種温度情報としては、給水温度センサ３３と吐出温度センサ３５の冷房モード時の第１の上限温度（「ＷＴ１＋ｍａｘ１、ＷＴ２＋ｍａｘ１、第１の下限温度（ＷＴ１−ｍａｘ１、ＷＴ２−ｍａｘ１）」、給水温度センサ３３と吐出温度センサ３５の暖房モード時の第２の上限温度（ＷＴ１＋ｍａｘ２、ＷＴ２＋ｍａｘ２）、第２の下限温度（ＷＴ１−ｍａｘ２、ＷＴ２−ｍａｘ２）と、所定表面温度が設定されている。第１の上限温度（ＷＴ１＋ｍａｘ１、ＷＴ２＋ｍａｘ１）はＷＴ１＋ｍａｘ１＜ＷＴ２＋ｍａｘ１、第１の下限温度（ＷＴ１−ｍａｘ１、ＷＴ２−ｍａｘ１）はＷＴ１−ｍａｘ１＜ＷＴ２−ｍａｘ１の関係にある。第２の上限温度（ＷＴ１＋ｍａｘ２、ＷＴ２＋ｍａｘ２）はＷＴ１＋ｍａｘ２＞ＷＴ２＋ｍａｘ２、第２の下限温度（ＷＴ１−ｍａｘ２、ＷＴ２−ｍａｘ２）はＷＴ１−ｍａｘ２＜ＷＴ２−ｍａｘ２の関係にある。
また、第１の上限温度（ＷＴ１＋ｍａｘ１、ＷＴ２＋ｍａｘ１）は第１の下限温度（ＷＴ１−ｍａｘ１、ＷＴ２−ｍａｘ１）よりも高温域の温度帯とされ、第２の上限温度（ＷＴ１＋ｍａｘ２、ＷＴ２＋ｍａｘ２）は第２の下限温度（ＷＴ１−ｍａｘ２、ＷＴ２−ｍａｘ２）よりも高温域側の温度帯とされている。On the output side of the control means 40, the four-way valve 2, the electromagnetic valves 22 to 25, the on-off valves 28 and 29, the electromagnetic valve 31, the compressor 6 and the drive motor 19 are electrically connected. In the ROM of the control means 40, the solenoid valves 22, 23 and the on-off valve 29, the solenoid valves 24, 25 and the on-off valve 28, and various temperature information that are parameters for turning on / off the drive motor 19, a predetermined pressure, a predetermined flow rate. The cooling mode and the heating mode are stored in advance. The various temperature information includes a first upper limit temperature (“WT1 + max1, WT2 + max1, first lower limit temperature (WT1-max1, WT2-max1)”) in the cooling mode of the feed water temperature sensor 33 and the discharge temperature sensor 35, and a feed water temperature sensor. The second upper limit temperature (WT1 + max2, WT2 + max2), the second lower limit temperature (WT1-max2, WT2-max2) and the predetermined surface temperature in the heating mode of the discharge temperature sensor 35 and the discharge temperature sensor 35 are set. The upper limit temperatures (WT1 + max1, WT2 + max1) are in the relationship of WT1 + max1 <WT2 + max1, the first lower limit temperature (WT1-max1, WT2-max1) is in the relationship of WT1-max1 <WT2-max1, and the second upper limit temperature (WT1 + max2, WT2 + max2) is WT1 + max2> WT2 + max2, second Lower limit temperature (WT1-max2, WT2-max2) is in the relation of WT1-max2 <WT2-max2.
Further, the first upper limit temperature (WT1 + max1, WT2 + max1) is set to a temperature range higher than the first lower limit temperature (WT1-max1, WT2-max1), and the second upper limit temperature (WT1 + max2, WT2 + max2) is the second. The lower temperature limit (WT1-max2, WT2-max2) is a temperature zone on the high temperature side.

制御手段４０は、図４に示す基本動作処理と、冷房スイッチ５１が操作されたときに始動する図５に示す冷房運転処理と、暖房スイッチ５２が操作されたときに始動する図６に示す暖房運転処理を実行するルーチンが設定されている。なお、本形態において、四方弁２は、通常オアとされていて、この状態の時には熱交換媒体を図１において実線で示す方向に移動にさせるように経路４を繋ぎ、オン状態となると、熱交換媒体を図１において破線で示す方向に移動にさせるように経路４を繋ぐ用に切り替わる。四方弁２は、冷却モード及び除湿モードの時にはオフ状態とされ、暖房モードの時にはオンされる用に制御される。  The control means 40 includes the basic operation process shown in FIG. 4, the cooling operation process shown in FIG. 5 that starts when the cooling switch 51 is operated, and the heating shown in FIG. 6 that starts when the heating switch 52 is operated. A routine for executing the operation process is set. In this embodiment, the four-way valve 2 is normally ORed. In this state, the path 4 is connected so as to move the heat exchange medium in the direction indicated by the solid line in FIG. The exchange medium is switched to connect the path 4 so as to move in the direction indicated by the broken line in FIG. The four-way valve 2 is controlled to be turned off in the cooling mode and the dehumidifying mode and turned on in the heating mode.

以下、制御装置４０による制御動作について説明する。図４において、基本動作処理は、ステップＳ１において、電源スイッチ５４が操作されて電源がオンとなると、ステップＳ２おいて運転モードが判別される。本形態では、ステップＳ２において運転モードが冷房の場合にはステップＳ３に進んで冷房運転処理が行われ、ステップＳ２において運転モードが冷房でない場合にはステップＳ４に進む。ステップＳ４において運転モードが暖房の場合にはステップＳ５に進んで暖房運転処理が行われ、ステップＳ４において運転モードが冷房でない場合にはステップＳ６に進む。ステップＳ６において運転モードが除湿の場合にはステップＳ７に進んで除湿運転処理が行われる。そして、各運転処理が実行されていても、電源スイッチ５４が操作されて電源オンとなると装置を停止させる。除湿運転は、冷房の一形態となるので、除湿運転処理は冷房運転処理と同一な処理内とし、除湿時の処理動作は省力するものとする。  Hereinafter, the control operation by the control device 40 will be described. 4, in the basic operation process, when the power switch 54 is operated and the power is turned on in step S1, the operation mode is determined in step S2. In the present embodiment, when the operation mode is cooling in step S2, the process proceeds to step S3 and the cooling operation process is performed, and when the operation mode is not cooling in step S2, the process proceeds to step S4. If the operation mode is heating in step S4, the process proceeds to step S5 and the heating operation process is performed. If the operation mode is not cooling in step S4, the process proceeds to step S6. If the operation mode is dehumidification in step S6, the process proceeds to step S7, where the dehumidification operation process is performed. Even if each operation process is executed, the apparatus is stopped when the power switch 54 is operated and the power is turned on. Since the dehumidifying operation is a form of cooling, the dehumidifying operation process is performed in the same process as the cooling operation process, and the processing operation at the time of dehumidification is saved.

ステップＳ２において、冷房運転が選択されると、図５の冷房運転処理が開始される。この処理では、ステップＵ１において運転モードの変換がないかが判断される。ここでは、操作部５０の冷房モードが他の運転モードに変更されたか否かが判断され、冷房モードの場合には、ステップＵ２に進む。ステップＵ１において運転モードが冷房以外に変更されている場合には、この冷房運手処理を継続しないで、図４のステップＳ２にリターンして再度運転モードの確認が実行される。  When the cooling operation is selected in step S2, the cooling operation process of FIG. 5 is started. In this process, it is determined in step U1 whether or not there is an operation mode conversion. Here, it is determined whether or not the cooling mode of the operation unit 50 has been changed to another operation mode, and in the case of the cooling mode, the process proceeds to step U2. If the operation mode has been changed to other than cooling in step U1, the cooling maneuver process is not continued, and the process returns to step S2 in FIG. 4 to confirm the operation mode again.

ステップＵ２では、電磁弁３１をオンして水冷式熱交換機２０に対して冷却水を流通させてステップＵ３に進む。この電磁弁３１の開弁動作によって冷却水経路３０及び水冷式熱交換機２０内の冷却水が流れる。ステップＵ３では、給水温度センサ３３と吐出温度センサ３３で検知した水温ＷＴ１、ＷＴ２と表面温度センサ３８で検知した表面温度Ｔ、水圧検知センサ３２及び流量検知センサ３６から水圧ＷＰ及び流量ＷＲの各情報の読込みが行なわれ、ステップＵ４に進む。ステップＵ４では水圧検知センサ３２からの水圧情報ＷＰと所定圧Ｐとが比較され、水圧情報ＷＰが所定圧Ｐに大きい場合にはポンプから熱交換に必要十分な冷却水が供給されているものとしてステップＵ５に進む。ステップＵ５では、流量検知センサ３８からの流量情報ＷＲと所定流量Ｒとが比較され、流量情報ＷＲが所定流量Ｒを越えている場合には、冷却水経路３０や水冷式熱交換機２０の破損やスケール付着による流量低減がなく、熱交換に必要な流量が水冷式熱交換機２０に供給されているものとしてステップＵ６に進む。ステップＵ６では、表面温度センサ３８からの表面温度情報Ｔと所定温度Ｔ１とが比較され、表面温度情報Ｔが所定温度Ｔ１よりも低い場合には、水冷式熱交換機２０内の詰まりや冷却水温度に異常がないものとしてステップＵ７に水冷式熱交換機２０を用いた冷却を行う水冷システムを動作させる。  In step U2, the electromagnetic valve 31 is turned on to allow cooling water to flow through the water-cooled heat exchanger 20, and the process proceeds to step U3. The opening of the electromagnetic valve 31 causes the cooling water in the cooling water path 30 and the water-cooled heat exchanger 20 to flow. In step U3, the water temperature WT1 detected by the feed water temperature sensor 33 and the discharge temperature sensor 33, the surface temperature T detected by the surface temperature sensor 38, the water pressure WP and the flow rate WR from the water pressure detection sensor 32 and the flow rate detection sensor 36, respectively. Is read and the process proceeds to step U4. In step U4, the water pressure information WP from the water pressure detection sensor 32 is compared with the predetermined pressure P. When the water pressure information WP is larger than the predetermined pressure P, it is assumed that sufficient cooling water necessary for heat exchange is supplied from the pump. Proceed to step U5. In step U5, the flow rate information WR from the flow rate detection sensor 38 is compared with the predetermined flow rate R. If the flow rate information WR exceeds the predetermined flow rate R, the cooling water path 30 or the water-cooled heat exchanger 20 may be damaged. The flow proceeds to Step U6 assuming that there is no flow reduction due to scale adhesion and that the flow required for heat exchange is supplied to the water-cooled heat exchanger 20. In step U6, the surface temperature information T from the surface temperature sensor 38 is compared with the predetermined temperature T1, and if the surface temperature information T is lower than the predetermined temperature T1, the clogging in the water-cooled heat exchanger 20 or the coolant temperature In step U7, a water cooling system that performs cooling using the water-cooled heat exchanger 20 is operated.

ステップＵ７の水冷システム動作について、図７のフローチャートを用いて説明する。水冷システム動作では、電磁弁２２，２３、開閉弁２９、圧縮機５がオン状態されるとともに、電磁弁２４，２５、開閉弁２８及び駆動モータ１９がオフ状態とされる。このため、冷却運転する場合には、熱交換媒体は、ファンコイルユニット１１から四方弁２を介して図１において実線示す矢印方向に移動する。この時、電磁弁２２，２３はオンされて第２の経路４Ａが開放されているので、熱交換媒体ま水冷式熱交換機２０へ導入される。また、開閉弁２８はオフ状態、開閉弁２９はオン状態とされるので、第４の経路２７が開放されて使用しない空冷式熱交換機５内の存在する熱交換媒体が、アキュムレータ８の負圧によりアキュムレータ８に回収される。このため、流路４内を循環する熱交換媒体の量が、封入時の量とほぼ同一の量とされて水冷式熱交換機２０へ導入される。導入された熱交換媒体は、水冷式熱交換機２０内の冷却水と間で熱交換されて冷却され、膨張弁３を介してファンコイルユニット１１へと戻される。水冷式熱交換機５での熱交換を時には、駆動モータ１９が停止状態となるので、省エネと、ファン１８の回転に伴い発生する風切り音などの騒音を低減することができる。  The water cooling system operation in step U7 will be described with reference to the flowchart in FIG. In the water cooling system operation, the solenoid valves 22, 23, the on-off valve 29, and the compressor 5 are turned on, and the solenoid valves 24, 25, the on-off valve 28, and the drive motor 19 are turned off. For this reason, in the cooling operation, the heat exchange medium moves from the fan coil unit 11 through the four-way valve 2 in the direction indicated by the solid line in FIG. At this time, since the electromagnetic valves 22 and 23 are turned on and the second path 4A is opened, the heat exchange medium or the water-cooled heat exchanger 20 is introduced. Further, since the on-off valve 28 is turned off and the on-off valve 29 is turned on, the heat exchange medium existing in the air-cooled heat exchanger 5 that is not used when the fourth path 27 is opened is caused by the negative pressure of the accumulator 8. Is collected in the accumulator 8. For this reason, the amount of the heat exchange medium circulating in the flow path 4 is set to be substantially the same as the amount at the time of sealing and is introduced into the water-cooled heat exchanger 20. The introduced heat exchange medium is cooled by heat exchange with the cooling water in the water-cooled heat exchanger 20 and returned to the fan coil unit 11 via the expansion valve 3. When the heat exchange in the water-cooled heat exchanger 5 is sometimes performed, the drive motor 19 is stopped, so that energy saving and noise such as wind noise generated with the rotation of the fan 18 can be reduced.

一方、ステップＵ４において水圧情報ＷＰが所定圧Ｐに満たない場合には、冷却水経路３０またはポンプに異常があり、水冷式熱交換機２０に対して十分な冷却水が供給されていないものと判断して、ステップＵ１０に進んで、電磁弁３１をオフして冷却水経路３０を閉じて水冷式熱交換機２０への冷却水の供給を絶ち、ステップＵ１１に進んで空冷式熱交換機５を用いた冷却を行う空冷システムを動作させる。
ステップＵ５において、流量情報ＷＲが所定流量Ｒに満たない場合には、水冷式熱交換機２０内のスケール付着で十分な流量の冷却水が水冷式熱交換機２０内で流れていないものとしてステップＵ１０に進む。そして、電磁弁３１をオフして冷却水経路３０を閉じて水冷式熱交換機２０への冷却水の供給を絶ち、ステップＵ１１に進んで空冷式熱交換機５を用いた冷却を行う空冷システムを動作させる。
ステップＵ６において表面温度情報Ｔが所定温度Ｔ１よりも高い場合には、水冷式熱交換機２０内の詰まりや冷却水温度に異常が発生していると判断してステップＵ１０に進む。そして、電磁弁３１をオフして冷却水経路３０を閉じて水冷式熱交換機２０への冷却水の供給を絶ち、ステップＵ１１に進んで空冷式熱交換機５を用いた冷却を行う空冷システムを動作させる。このように、ステップＵ４からステップＵ６は水冷式熱交換機２０や冷却水供給系に対する異常判定部を構成している。On the other hand, if the water pressure information WP is less than the predetermined pressure P in step U4, it is determined that there is an abnormality in the cooling water passage 30 or the pump and sufficient cooling water is not supplied to the water-cooled heat exchanger 20. Then, the process proceeds to Step U10, the solenoid valve 31 is turned off, the cooling water path 30 is closed, the supply of the cooling water to the water-cooled heat exchanger 20 is stopped, and the process proceeds to Step U11 to use the air-cooled heat exchanger 5. Operate an air cooling system for cooling.
In step U5, when the flow rate information WR is less than the predetermined flow rate R, it is determined that the cooling water having a sufficient flow rate due to the scale adhesion in the water-cooled heat exchanger 20 is not flowing in the water-cooled heat exchanger 20 to step U10. move on. Then, the electromagnetic valve 31 is turned off to close the cooling water passage 30 to stop the supply of the cooling water to the water-cooled heat exchanger 20, and the process proceeds to Step U11 to operate the air-cooling system that performs cooling using the air-cooled heat exchanger 5 Let
If the surface temperature information T is higher than the predetermined temperature T1 in step U6, it is determined that the water-cooled heat exchanger 20 is clogged or the cooling water temperature is abnormal, and the process proceeds to step U10. Then, the electromagnetic valve 31 is turned off to close the cooling water passage 30 to stop the supply of the cooling water to the water-cooled heat exchanger 20, and the process proceeds to Step U11 to operate the air-cooling system that performs cooling using the air-cooled heat exchanger 5 Let Thus, Step U4 to Step U6 constitute an abnormality determination unit for the water-cooled heat exchanger 20 and the cooling water supply system.

ステップＵ１１の空冷システム動作について、図８のフローチャートを用いて説明する。空冷システム動作では、圧縮機６、電磁弁２４，２５、開閉弁２８、駆動モータ１９がオン状態とされるとともに、電磁弁２２，２３と開閉弁２９がオフ状態となる。このため、流路４Ａは閉じ、第１の流路４Ｂが開放されて経路切換えが行われるとともに第３の経路２６が開放されて使用しない水冷式熱交換機２０内の存在する熱交換媒体がアキュムレータ８の負圧によりアキュムレータ８に回収されるとともにファン１８が回転する。このため、圧縮機６、四方弁２を通過した熱交換媒体は、全て空冷式熱交換機５へ案内され、ファン１８の回転に発生する気流により空気と間で熱交換されて冷却され、膨張弁３を介してファンコイルユニット１１へと戻される。  The air cooling system operation in step U11 will be described using the flowchart of FIG. In the air cooling system operation, the compressor 6, the electromagnetic valves 24 and 25, the on-off valve 28, and the drive motor 19 are turned on, and the electromagnetic valves 22, 23 and the on-off valve 29 are turned off. For this reason, the flow path 4A is closed, the first flow path 4B is opened and the path switching is performed, and the third path 26 is opened and the heat exchange medium existing in the water-cooled heat exchanger 20 that is not used is an accumulator. The negative pressure of 8 is collected by the accumulator 8 and the fan 18 rotates. For this reason, the heat exchange medium that has passed through the compressor 6 and the four-way valve 2 is all guided to the air-cooled heat exchanger 5, and is cooled by being exchanged with air by the air flow generated by the rotation of the fan 18. 3 is returned to the fan coil unit 11.

ステップＵ７において水冷システムが動作されるとステップＵ８に進み、給水温度センサ３３からの給水温度情報ＷＴ１と第１の上限温度ＷＴ１＋ｍａｘ１とが比較される。そして、給水温度情報ＷＴ１が上限温度ＷＴ１＋ｍａｘ１を超えていない場合には、現在の冷却水の温度でも十分に熱交換が可能であるとしてステップＵ７に戻り、水冷システムによる動作が継続されて、水冷式熱交換機２０による熱交換が継続される。給水温度情報ＷＴ１が上限温度ＷＴ１＋ｍａｘ１を超える場合にはステップＵ９に進み、吐出温度センサ３５からの吐出温度情報ＷＴ２と第１の上限温度ＷＴ２＋ｍａｘ１とが比較される。そして、吐出温度情報ＷＴ２が上限温度ＷＴ２＋ｍａｘ１を超えていない場合には、現在の冷却水の温度でも十分に熱交換が可能であるとしてステップＵ７に戻り、水冷式熱交換機２０による熱交換が継続される。吐出温度情報ＷＴ２が上限温度ＷＴ２＋ｍａｘ１を超える場合には、現在の冷却水の温度では十分に熱交換が不可能であるとしてステップＵ１１に進む。  When the water cooling system is operated in step U7, the process proceeds to step U8, where the feed water temperature information WT1 from the feed water temperature sensor 33 is compared with the first upper limit temperature WT1 + max1. If the feed water temperature information WT1 does not exceed the upper limit temperature WT1 + max1, the process returns to Step U7 as it is possible to sufficiently exchange heat even at the current cooling water temperature, and the operation by the water cooling system is continued, so that the water cooling type The heat exchange by the heat exchanger 20 is continued. If the feed water temperature information WT1 exceeds the upper limit temperature WT1 + max1, the process proceeds to step U9, and the discharge temperature information WT2 from the discharge temperature sensor 35 is compared with the first upper limit temperature WT2 + max1. If the discharge temperature information WT2 does not exceed the upper limit temperature WT2 + max1, the process returns to step U7 because heat exchange is possible even at the current cooling water temperature, and heat exchange by the water-cooled heat exchanger 20 is continued. The If the discharge temperature information WT2 exceeds the upper limit temperature WT2 + max1, the process proceeds to Step U11 because heat exchange is not possible at the current cooling water temperature.

このため、給水温度情報ＷＴ１が第１の上限温度ＷＴ１＋ｍａｘ１、吐出温度情報ＷＴ２が第１の上限温度ＷＴ２＋ｍａｘ１を超える場合、すなわち、冷却水の温度が第１の上限温度を越えると、熱交換媒体が流れる経路が第１の経路４Ｂへ切換えられる。また、本形態では、給水温度情報ＷＴ１と吐出温度情報ＷＴ２とがそれぞれ、上限温度ＷＴ１＋ｍａｘ１及び所上限温度ＷＴ２＋ｍａｘ１を越えないと、水冷式交換機２０による熱交換媒体の冷却から空冷式熱交換機５による冷却へと切換えないので、切換えのパラメーターとしては上限温度ではなく、第１の上限温度範囲（上限温度ＷＴ１＋ｍａｘ１〜上限温度ＷＴ２＋ｍａｘ１）で判断しても良い。  Therefore, when the feed water temperature information WT1 exceeds the first upper limit temperature WT1 + max1 and the discharge temperature information WT2 exceeds the first upper limit temperature WT2 + max1, that is, when the temperature of the cooling water exceeds the first upper limit temperature, the heat exchange medium The flowing path is switched to the first path 4B. Further, in this embodiment, if the feed water temperature information WT1 and the discharge temperature information WT2 do not exceed the upper limit temperature WT1 + max1 and the upper limit temperature WT2 + max1, respectively, the cooling of the heat exchange medium by the water-cooled exchanger 20 to the cooling by the air-cooled heat exchanger 5 Therefore, the switching parameter may be determined not by the upper limit temperature but by the first upper limit temperature range (upper limit temperature WT1 + max1 to upper limit temperature WT2 + max1).

ステップＵ１１において空冷システムが動作されるとステップＵ１２に進み、電磁弁３１が間欠的にオンされる。これは、空冷システム動作時においては、水冷式熱交換機２０による熱交換を行わないため、電磁弁２１をオフ状態とすることで消費電力を低減することができる。空冷システム動作中において電磁弁３１を間欠的にオンして冷却水流路３０を開状態とすると、同流路３０及び水冷式熱交換機２０内の冷却水が流通して放熱性が高まり、電磁弁３１を全閉する場合よりも、早期に冷却水の温度の低下させることかできる。  When the air cooling system is operated in step U11, the process proceeds to step U12, and the solenoid valve 31 is intermittently turned on. This is because heat exchange by the water-cooled heat exchanger 20 is not performed during the operation of the air-cooling system, and thus power consumption can be reduced by turning off the solenoid valve 21. When the electromagnetic valve 31 is intermittently turned on during the operation of the air cooling system to open the cooling water flow path 30, the cooling water in the flow path 30 and the water-cooled heat exchanger 20 is circulated to improve heat dissipation, and the electromagnetic valve The temperature of the cooling water can be lowered earlier than when 31 is fully closed.

ステップＵ１２では、給水温度センサ３３からの給水温度情報ＷＴ１と第１の下限温度ＷＴ１−ｍａｘ１とが比較される。そして、給水温度情報ＷＴ１が所定加温度ＷＴ１−ｍａｘ１を超えていない（下回らない）場合には、冷却水が十分に放熱されて冷却されていないものとしてステップＵ１１に戻り、空冷システムによる動作が継続されて空冷式熱交換機５による熱交換が継続される。給水温度情報ＷＴ１が下限温度ＷＴ１−ｍａｘ１を超える（下回る）場合にはステップＵ１４に進み、吐出温度センサ３５からの吐出温度情報ＷＴ２と第１の下限温度ＷＴ２−ｍａｘ１とが比較される。そして、吐出温度情報ＷＴ２が下限温度ＷＴ２−ｍａｘ１を超えていない場合には、未だ冷却水が十分に放熱されて冷却されていないものとしてステップＵ１１に戻り、空冷システムによる動作が継続されて空冷式熱交換機５による熱交換が継続される。給水温度情報ＷＴ１が下限温度ＷＴ２−ｍａｘ１を超える（下回る）場合には、冷却水が冷却されて十分に熱交換が可能であるとしてステップＵ７に戻り、水冷システム動作が実行される。このように、冷却水の温度が第１の下限温度を越えると、熱交換媒体が流れる経路が第２の経路４Ａへ切換えられる。  In step U12, the feed water temperature information WT1 from the feed water temperature sensor 33 is compared with the first lower limit temperature WT1-max1. If the feed water temperature information WT1 does not exceed the predetermined heating temperature WT1-max1 (does not fall below), the cooling water is sufficiently dissipated to return to step U11 and the operation by the air cooling system continues. Thus, heat exchange by the air-cooled heat exchanger 5 is continued. When the feed water temperature information WT1 exceeds (below) the lower limit temperature WT1-max1, the process proceeds to step U14, and the discharge temperature information WT2 from the discharge temperature sensor 35 is compared with the first lower limit temperature WT2-max1. If the discharge temperature information WT2 does not exceed the lower limit temperature WT2-max1, the process returns to step U11 on the assumption that the cooling water has not been sufficiently radiated and cooled, and the operation by the air cooling system is continued and the air cooling type is performed. Heat exchange by the heat exchanger 5 is continued. When the feed water temperature information WT1 exceeds (below) the lower limit temperature WT2-max1, it is determined that the cooling water is cooled and heat can be sufficiently exchanged, and the process returns to step U7 to execute the water cooling system operation. Thus, when the temperature of the cooling water exceeds the first lower limit temperature, the path through which the heat exchange medium flows is switched to the second path 4A.

図４のステップＳ４において、暖房運転が選択されると、図６の冷房運転処理が開始される。この処理では、ステップＶ１において運転モードの変換がないかが判断される。ここでは、操作部５０の暖房モードが他の運転モードに変更されたか否かが判断され、暖房モードの場合にはステップＶ２に進む。ステップＶ１において運転モードが暖房以外に変更されている場合には、この暖房運手処理を継続しないで、図４のステップＳ２にリターンして再度運転モードの確認が実行される。  If heating operation is selected in step S4 of FIG. 4, the cooling operation process of FIG. 6 is started. In this process, it is determined in step V1 whether or not there is an operation mode conversion. Here, it is determined whether or not the heating mode of the operation unit 50 has been changed to another operation mode, and in the case of the heating mode, the process proceeds to step V2. If the operation mode is changed to other than heating in Step V1, the heating operation process is not continued, and the process returns to Step S2 in FIG. 4 to confirm the operation mode again.

ステップＶ２では、四方弁２をオンして、経路４を冷房用経路から暖房経路へと切換え、ステップＶ３に進む。ステップＶ３では、電磁弁３１をオンして水冷式熱交換機２０に対して冷却水を流通させてステップＶ４に進む。この電磁弁３１の開弁動作によって冷却水経路３０及び水冷式熱交換機２０内の冷却水が流れる。ステップＶ４では、給水温度センサ３３と吐出温度センサ３３で検知した給水温度ＷＴ１、吐出温度ＷＴ２と表面温度センサ３８で検知した表面温度Ｔ、水圧検知センサ３２及び流量検知センサ３６から水圧ＷＰ及び流量ＷＲの各情報の読込みが行なわれステップＶ５に進む。ステップＶ５では水圧検知センサ３２からの水圧情報ＷＰと所定圧Ｐとが比較され、水圧情報ＷＰが所定圧Ｐに大きい場合にはポンプから熱交換に必要十分な冷却水が供給されているものとしてステップＶ６に進む。ステップＶ６では、流量検知センサ３８からの流量情報ＷＲと所定流量Ｒとが比較され、流量情報ＷＲが所定流量Ｒを越えている場合には、冷却水経路３０や水冷式熱交換機２０の破損やスケール付着による流量低減がなく、熱交換に必要な流量が水冷式熱交換機２０に供給されているものとしてステップＶ７に進む。ステップＶ７では、表面温度センサ３８からの表面温度情報Ｔと所定温度Ｔ１とが比較され、表面温度情報Ｔが所定温度Ｔ１よりも低い場合には、水冷式熱交換機２０内の詰まりや冷却水温度に異常がないものとしてステップＶ８に水冷式熱交換機２０を用いた冷却を行う水冷システムを動作させる。  In step V2, the four-way valve 2 is turned on, the path 4 is switched from the cooling path to the heating path, and the process proceeds to step V3. In step V3, the solenoid valve 31 is turned on to allow cooling water to flow through the water-cooled heat exchanger 20, and the process proceeds to step V4. The opening of the electromagnetic valve 31 causes the cooling water in the cooling water path 30 and the water-cooled heat exchanger 20 to flow. In step V4, the feed water temperature WT1 detected by the feed water temperature sensor 33 and the discharge temperature sensor 33, the surface temperature T detected by the discharge temperature WT2 and the surface temperature sensor 38, the water pressure WP and the flow rate WR from the water pressure detection sensor 32 and the flow rate detection sensor 36. Each information is read and the process proceeds to step V5. In step V5, the water pressure information WP from the water pressure detection sensor 32 is compared with the predetermined pressure P, and if the water pressure information WP is larger than the predetermined pressure P, it is assumed that sufficient cooling water necessary for heat exchange is supplied from the pump. Proceed to step V6. In step V6, the flow rate information WR from the flow rate detection sensor 38 is compared with the predetermined flow rate R, and if the flow rate information WR exceeds the predetermined flow rate R, the cooling water path 30 or the water-cooled heat exchanger 20 is damaged. The flow proceeds to Step V7 assuming that there is no flow reduction due to scale adhesion and that the flow required for heat exchange is supplied to the water-cooled heat exchanger 20. In Step V7, the surface temperature information T from the surface temperature sensor 38 is compared with the predetermined temperature T1, and when the surface temperature information T is lower than the predetermined temperature T1, the clogging in the water-cooled heat exchanger 20 or the cooling water temperature is detected. In step V8, a water cooling system that performs cooling using the water-cooled heat exchanger 20 is operated.

ステップＶ８の水冷システム動作は図７に示すように、電磁弁２２，２３、開閉弁２９、圧縮機５がオン状態され、電磁弁２４，２５、開閉弁２８及び駆動モータ１９がオフ状態とされる。但し、四方弁２はオンされているので、暖房運転する場合、熱交換媒体はファンコイルユニット１１から停止弁１０Ｂを介して経路７に流入し、図１において破線で示す矢印方向にして、四方弁２から停止弁１０Ａへを介してファンコイルユニット１１に戻される。この時、電磁弁２２，２３はオンされて第２の経路４Ａが開放されているので、熱交換媒体は水冷式熱交換機２０へ導入される。また、開閉弁２８はオフ状態、開閉弁２９はオン状態とされるので、第４の経路２７が開放されて使用しない空冷式熱交換機５内の存在する熱交換媒体が、アキュムレータ８の負圧によりアキュムレータ８に回収される。このため、流路４内を循環する熱交換媒体の量が、封入時の量とほぼ同一の量とされて水冷式熱交換機２０へ導入される。導入された熱交換媒体は、水冷式熱交換機２０内の冷却水と間で熱交換されて冷却され、四方弁２を介してファンコイルユニット１１へと戻される。水冷式熱交換機５での熱交換を時には、駆動モータ１９が停止状態となるので、省エネと、ファン１８の回転に伴い発生する風切り音などの騒音を低減することができる。  As shown in FIG. 7, in the operation of the water cooling system in step V8, the solenoid valves 22, 23, the on-off valve 29, and the compressor 5 are turned on, and the solenoid valves 24, 25, the on-off valve 28 and the drive motor 19 are turned off. The However, since the four-way valve 2 is turned on, when heating operation is performed, the heat exchange medium flows from the fan coil unit 11 into the path 7 via the stop valve 10B, and in the direction indicated by the broken line in FIG. The valve 2 is returned to the fan coil unit 11 through the stop valve 10A. At this time, since the electromagnetic valves 22 and 23 are turned on and the second path 4A is opened, the heat exchange medium is introduced into the water-cooled heat exchanger 20. Further, since the on-off valve 28 is turned off and the on-off valve 29 is turned on, the heat exchange medium existing in the air-cooled heat exchanger 5 that is not used when the fourth path 27 is opened is caused by the negative pressure of the accumulator 8. Is collected in the accumulator 8. For this reason, the amount of the heat exchange medium circulating in the flow path 4 is set to be substantially the same as the amount at the time of sealing and is introduced into the water-cooled heat exchanger 20. The introduced heat exchange medium is cooled by exchanging heat with the cooling water in the water-cooled heat exchanger 20 and returned to the fan coil unit 11 via the four-way valve 2. When the heat exchange in the water-cooled heat exchanger 5 is sometimes performed, the drive motor 19 is stopped, so that energy saving and noise such as wind noise generated with the rotation of the fan 18 can be reduced.

一方、ステップＶ５において水圧情報ＷＰが所定圧Ｐに満たない場合には、冷却水経路３０またはポンプに異常があり、水冷式熱交換機２０に対して十分な冷却水が供給されていないものと判断して、ステップＶ１１に進んで電磁弁３１をオフして冷却水経路３０を閉じて水冷式熱交換機２０への冷却水の供給を絶ち、ステップＶ１２に進んで空冷式熱交換機５を用いた冷却を行う空冷システムを動作させる。
ステップＶ６において、流量情報ＷＲが所定流量Ｒに満たない場合には、水冷式熱交換機２０内のスケール付着で十分な流量の冷却水が水冷式熱交換機２０内で流れていないものとしてステップＶ１１に進む。そして、電磁弁３１をオフして冷却水経路３０を閉じて水冷式熱交換機２０への冷却水の供給を絶ち、ステップＶ１２に進んで空冷式熱交換機５を用いた冷却を行う空冷システムを動作させる。
ステップＶ７において表面温度情報Ｔが所定温度Ｔ１よりも高い場合には、水冷式熱交換機２０内の詰まりや冷却水温度に異常が発生していると判断してステップＶ１１に進む。そして、電磁弁３１をオフして冷却水経路３０を閉じて水冷式熱交換機２０への冷却水の供給を絶ち、ステップＶ１２に進んで空冷式熱交換機５を用いた冷却を行う空冷システムを動作させる。このように、ステップＶ５からステップＶ７は水冷式熱交換機２０や冷却水供給系に対する異常判定部を構成している。On the other hand, if the water pressure information WP is less than the predetermined pressure P in step V5, it is determined that there is an abnormality in the cooling water passage 30 or the pump and sufficient cooling water is not supplied to the water-cooled heat exchanger 20. Then, the process proceeds to Step V11, the solenoid valve 31 is turned off, the cooling water path 30 is closed, the supply of the cooling water to the water-cooled heat exchanger 20 is stopped, and the process proceeds to Step V12 to perform cooling using the air-cooled heat exchanger 5. Operate the air cooling system.
In step V6, if the flow rate information WR is less than the predetermined flow rate R, it is determined that the cooling water having a sufficient flow rate due to the scale adhering in the water-cooled heat exchanger 20 is not flowing in the water-cooled heat exchanger 20; move on. Then, the solenoid valve 31 is turned off to close the cooling water passage 30 to stop the supply of the cooling water to the water-cooled heat exchanger 20, and the operation proceeds to step V12 to operate the air-cooling system that performs cooling using the air-cooled heat exchanger 5 Let
When the surface temperature information T is higher than the predetermined temperature T1 in step V7, it is determined that the water-cooled heat exchanger 20 is clogged or the cooling water temperature is abnormal, and the process proceeds to step V11. Then, the solenoid valve 31 is turned off to close the cooling water passage 30 to stop the supply of the cooling water to the water-cooled heat exchanger 20, and the operation proceeds to step V12 to operate the air-cooling system that performs cooling using the air-cooled heat exchanger 5 Let Thus, Step V5 to Step V7 constitute an abnormality determination unit for the water-cooled heat exchanger 20 and the cooling water supply system.

ステップＶ１２の空冷システム動作は、図８に示すように圧縮機６、電磁弁２４，２５、開閉弁２８、駆動モータ１９がオン状態とされるとともに、電磁弁２２，２３と開閉弁２９がオフ状態となる。無論暖房モードであるので、四方弁２はオン状態とされている。このため、流路４Ａは閉じ、第１の流路４Ｂが開放されて経路切換えが行われるとともに第３の経路２６が開放されて使用しない水冷式熱交換機２０内の存在する熱交換媒体がアキュムレータ８の負圧によりアキュムレータ８に回収されるとともにファン１８が回転する。このため、圧縮機６、四方弁２を通過した熱交換媒体は、全て空冷式熱交換機５へ案内され、ファン１８の回転に発生する気流により空気と間で熱交換されて冷却され、膨張弁３を介してファンコイルユニット１１へと戻される。  As shown in FIG. 8, the operation of the air cooling system in Step V12 is performed while the compressor 6, the electromagnetic valves 24 and 25, the on-off valve 28, and the drive motor 19 are turned on, and the electromagnetic valves 22, 23 and the on-off valve 29 are off. It becomes a state. Of course, since the heating mode is set, the four-way valve 2 is turned on. For this reason, the flow path 4A is closed, the first flow path 4B is opened and the path switching is performed, and the third path 26 is opened and the heat exchange medium existing in the water-cooled heat exchanger 20 that is not used is an accumulator. The negative pressure of 8 is collected by the accumulator 8 and the fan 18 rotates. For this reason, the heat exchange medium that has passed through the compressor 6 and the four-way valve 2 is all guided to the air-cooled heat exchanger 5, and is cooled by being exchanged with air by the air flow generated by the rotation of the fan 18. 3 is returned to the fan coil unit 11.

ステップＶ８において水冷システムが動作されるとステップＶ９に進み、給水温度センサ３３からの給水温度情報ＷＴ１と第２の下限温度ＷＴ１−ｍａｘ２とが比較される。そして、給水温度情報ＷＴ１が下限温度ＷＴ１−ｍａｘ２を超えていない、すなわち下回っていない場合には、現在の冷却水の温度でも十分に熱交換が可能であるとしてステップＶ８に戻り、水冷システムによる動作が継続されて、水冷式熱交換機２０による熱交換が継続される。給水温度情報ＷＴ１が下限温度ＷＴ１−ｍａｘ２を超える（下回った）場合にはステップＶ１０に進み、吐出温度センサ３５からの吐出温度情報ＷＴ２と第２の上限温度ＷＴ２−ｍａｘ２とが比較される。そして、吐出温度情報ＷＴ２が下限温度ＷＴ２−ｍａｘ２を超えていない（下回っていない）場合には、現在の冷却水の温度でも十分に熱交換が可能であるとしてステップＶ８に戻り、水冷式熱交換機２０による熱交換が継続される。吐出温度情報ＷＴ２が下限温度ＷＴ２−ｍａｘ２を超える（下回る）場合には、現在の冷却水の温度では十分に熱交換が不可能であるとしてステップＶ１２に進む。  When the water cooling system is operated in step V8, the process proceeds to step V9, and the feed water temperature information WT1 from the feed water temperature sensor 33 is compared with the second lower limit temperature WT1-max2. Then, if the feed water temperature information WT1 does not exceed the lower limit temperature WT1-max2, that is, not lower than the lower limit temperature WT1-max2, the process returns to Step V8 because it is possible to sufficiently exchange heat even at the current cooling water temperature, and the operation by the water cooling system Is continued, and heat exchange by the water-cooled heat exchanger 20 is continued. When the feed water temperature information WT1 exceeds (below) the lower limit temperature WT1-max2, the process proceeds to step V10, and the discharge temperature information WT2 from the discharge temperature sensor 35 is compared with the second upper limit temperature WT2-max2. If the discharge temperature information WT2 does not exceed the lower limit temperature WT2-max2 (is not lower than the lower limit temperature WT2-max2), the process returns to Step V8 because the heat can be sufficiently exchanged even at the current cooling water temperature, and the water-cooled heat exchanger The heat exchange by 20 is continued. If the discharge temperature information WT2 exceeds (below) the lower limit temperature WT2-max2, it is determined that heat exchange is not possible at the current cooling water temperature, and the process proceeds to step V12.

このため、給水温度情報ＷＴ１が第２の下限温度ＷＴ１−ｍａｘ２を、吐出温度情報ＷＴ２が第１の下限温度ＷＴ２−ｍａｘ２をそれぞれ下回る場合、すなわち、冷却水の温度が第２の下限温度を越えると、熱交換媒体が流れる経路が第１の経路４Ｂへ切換えられる。また、本形態では、給水温度情報ＷＴ１と吐出温度情報ＷＴ２とがそれぞれ、下限温度ＷＴ１−ｍａｘ２及び下限温度ＷＴ２−ｍａｘ２を越えないと、水冷式交換機２０による熱交換媒体の加熱から空冷式熱交換機５による加熱へと切換えないので、切換えのパラメーターとしては上限温度ではなく、第２の下限温度範囲（下限温度ＷＴ２−ｍａｘ２〜下限温度ＷＴ１−ｍａｘ２）で判断しても良い。  Therefore, when the feed water temperature information WT1 is lower than the second lower limit temperature WT1-max2 and the discharge temperature information WT2 is lower than the first lower limit temperature WT2-max2, that is, the temperature of the cooling water exceeds the second lower limit temperature. Then, the path through which the heat exchange medium flows is switched to the first path 4B. Further, in this embodiment, if the feed water temperature information WT1 and the discharge temperature information WT2 do not exceed the lower limit temperature WT1-max2 and the lower limit temperature WT2-max2, respectively, the air-cooled heat exchanger is heated from the heating of the heat-exchange medium by the water-cooled exchanger 20. Therefore, the switching parameter may be determined not by the upper limit temperature but by the second lower limit temperature range (lower limit temperature WT2-max2 to lower limit temperature WT1-max2).

ステップＶ１２において空冷システムが動作されるとステップＶ１３に進み、電磁弁３１が間欠的にオンされてステップＶ１４に進む。このため、冷却水流路３０が間欠的に開状態とされるので、同流路３０及び水冷式熱交換機２０内の冷却水が流通して放熱性が高まり、電磁弁３１を全閉する場合よりも、早期に冷却水の温度の上昇させることかできる。  When the air cooling system is operated in step V12, the process proceeds to step V13, the electromagnetic valve 31 is intermittently turned on, and the process proceeds to step V14. For this reason, since the cooling water flow path 30 is intermittently opened, the cooling water in the flow path 30 and the water-cooled heat exchanger 20 is circulated to increase heat dissipation, and the electromagnetic valve 31 is fully closed. Also, the temperature of the cooling water can be raised early.

ステップＶ１４では、給水温度センサ３３からの給水温度情報ＷＴ１と第２の上限温度ＷＴ１＋ｍａｘ２とが比較される。そして、給水温度情報ＷＴ１が所定温度ＷＴ１＋ｍａｘ２を超えていない（上回らない）場合には、冷却水が十分に吸熱されて加温されていないものとしてステップＵ１２に戻り、空冷システムによる動作が継続されて空冷式熱交換機５による熱交換が継続される。給水温度情報ＷＴ１が上限温度ＷＴ１＋ｍａｘ２を超える（上回る）場合にはステップＵ１５に進み、吐出温度センサ３５からの吐出温度情報ＷＴ２と第２の上限温度ＷＴ２＋ｍａｘ２とが比較される。そして、吐出温度情報ＷＴ２が上限温度ＷＴ２＋ｍａｘ２を超えるまでは、未だ冷却水が十分に吸熱されて加温されていないものとしてステップＵ１２に戻り、空冷システムによる動作が継続されて空冷式熱交換機５による熱交換が継続される。給水温度情報ＷＴ１が上限温度ＷＴ２＋ｍａｘ２を超える（上回る）場合には、冷却水が加温（加熱）されて十分に熱交換が可能であるとしてステップＵ７に戻り、水冷システム動作が実行される。このように、冷却水の温度が第２の下限温度を越えると、熱交換媒体が流れる経路が第２の経路４Ａへ切換えられる。  In step V14, the feed water temperature information WT1 from the feed water temperature sensor 33 is compared with the second upper limit temperature WT1 + max2. If the feed water temperature information WT1 does not exceed the predetermined temperature WT1 + max2 (does not exceed), the cooling water is sufficiently absorbed and returned to step U12, and the operation by the air cooling system is continued. Heat exchange by the air-cooled heat exchanger 5 is continued. When the feed water temperature information WT1 exceeds (exceeds) the upper limit temperature WT1 + max2, the process proceeds to step U15, and the discharge temperature information WT2 from the discharge temperature sensor 35 is compared with the second upper limit temperature WT2 + max2. Then, until the discharge temperature information WT2 exceeds the upper limit temperature WT2 + max2, it is assumed that the cooling water has not yet sufficiently absorbed heat and returned to step U12, and the operation by the air cooling system is continued to be performed by the air cooling heat exchanger 5 Heat exchange continues. When the feed water temperature information WT1 exceeds (exceeds) the upper limit temperature WT2 + max2, the cooling water is heated (heated), and the process returns to Step U7 and heat exchange is possible, and the water cooling system operation is executed. Thus, when the temperature of the cooling water exceeds the second lower limit temperature, the path through which the heat exchange medium flows is switched to the second path 4A.

本形態の制御手段４０においては、冷却モード時において、冷却水の温度が第１の上限温度（ＷＴ１＋ｍａｘ１、ＷＴ２＋ｍａｘ１）または第１の上限温度範囲（ＷＴ１＋ｍａｘ１〜ＷＴ２＋ｍａｘ１）を超えると、熱交換媒体が流れる経路が第１の経路４Ｂへ切換えられ、熱交換媒体が空冷式熱交換機５に案内され、冷却水の温度が第１の下限温度（ＷＴ１−ｍａｘ１、ＷＴ２−ｍａｘ１）または下限温度範囲ＷＴ１−ｍａｘ１〜ＷＴ２−ｍａｘ１）を超えると熱交換媒体が流れる経路が第２の経路４Ａへ切換えされて熱交換媒体が水冷式熱交換機２０へと案内される。このため、温度条件に応じて適宜、空冷式熱交換機５と水冷式熱交換機２０の何れかに熱交換媒体が案内されて熱交換され、空冷式と水冷式の熱交換機を有する空調装置１を効率良く運転させつつ、何れかの熱交換機が故障した場合でも空調装置として機能させることができる。  In the control means 40 of this embodiment, when the temperature of the cooling water exceeds the first upper limit temperature (WT1 + max1, WT2 + max1) or the first upper limit temperature range (WT1 + max1 to WT2 + max1) in the cooling mode, the heat exchange medium flows. The path is switched to the first path 4B, the heat exchange medium is guided to the air-cooled heat exchanger 5, and the temperature of the cooling water is the first lower limit temperature (WT1-max1, WT2-max1) or the lower limit temperature range WT1-max1. When WT2-max1) is exceeded, the path through which the heat exchange medium flows is switched to the second path 4A, and the heat exchange medium is guided to the water-cooled heat exchanger 20. For this reason, the air-conditioning apparatus 1 having an air-cooled type and a water-cooled type heat exchanger is provided with a heat exchange medium guided to one of the air-cooled heat exchanger 5 and the water-cooled heat exchanger 20 and heat-exchanged as appropriate according to temperature conditions. While operating efficiently, even if any heat exchanger fails, it can function as an air conditioner.

本形態の制御手段４０においては、暖房モード時において、冷却水の温度が第２の下限温度（ＷＴ１−ｍａｘ２、ＷＴ２−ｍａｘ２）または下限温度範囲（ＷＴ１−ｍａｘ２〜ＷＴ２−ｍａｘ２）を超えると熱交換媒体が流れる経路が第１の経路４Ｂへ切換えられて熱交換媒体が空冷式熱交換機５へ案内され、冷却水の温度が第２の上限温度（ＷＴ１＋ｍａｘ２、ＷＴ２＋ｍａｘ２）または上限温度範囲（ＷＴ２＋ｍａｘ２〜ＷＴ２＋ｍａｘ２）を超える場合には熱交換媒体が流れる経路が第２の経路４Ａへ切換えられて熱交換媒体が水冷式熱交換機２０へ案内される。このため、空冷式と水冷式の熱交換機を有する空調装置１を効率良く運転させつつ、何れかの熱交換機が故障した場合でも空調装置として機能させることができる。  In the control means 40 of the present embodiment, when the temperature of the cooling water exceeds the second lower limit temperature (WT1-max2, WT2-max2) or the lower limit temperature range (WT1-max2-WT2-max2) in the heating mode, heat is generated. The path through which the exchange medium flows is switched to the first path 4B and the heat exchange medium is guided to the air-cooled heat exchanger 5, and the temperature of the cooling water is set to the second upper limit temperature (WT1 + max2, WT2 + max2) or the upper limit temperature range (WT2 + max2). When WT2 + max2) is exceeded, the path through which the heat exchange medium flows is switched to the second path 4A, and the heat exchange medium is guided to the water-cooled heat exchanger 20. Therefore, the air conditioner 1 having the air-cooled type and the water-cooled type heat exchanger can be efficiently operated, and can function as an air conditioner even when one of the heat exchangers fails.

本形態において、制御手段４０は個別な形態で説明したが、空調装置１が備えた形態であっても良く、この場合、上述の機能を備えた制御御装置４０を有するハイブリッド空調装置１０とすることができる。
冷却水の温度は、環境や使用状況により、初期の温度や放熱／吸熱に要する時間にバラツキがあるまで、制御手段４０に設定された各上限温度や下限温度を、切換温度設定手段５５を操作して適宜、設定温度を変更することで、水冷システムと空冷システムの動作時間を変更することができる。In the present embodiment, the control means 40 has been described in an individual form. However, the form provided in the air conditioner 1 may be used, and in this case, the hybrid air conditioner 10 including the control device 40 having the above-described functions is used. be able to.
The switching water temperature setting means 55 is operated by operating the switching temperature setting means 55 until the temperature of the cooling water varies depending on the environment and use conditions until the initial temperature and the time required for heat dissipation / heat absorption vary. Then, by appropriately changing the set temperature, the operation time of the water cooling system and the air cooling system can be changed.

本形態において、水圧検知センサ３２は給水流路３４に設けて給水圧（導入圧ともいう）を検知しているが、排水流路３７に設けて水冷式熱交換機２０からの吐出圧を冷却水の圧力として検知しても良い。すなわち、冷却水の水圧検知は、主に水冷式熱交換機２０に対して、熱交換でき得るに足りる十分な量の冷却水が供給されているか、変言すると、図示しないポンプの故障や給水流路３４や排水流路３７の破損の有無を検知することにも成る。  In this embodiment, the water pressure detection sensor 32 is provided in the water supply flow path 34 to detect the water supply pressure (also referred to as introduction pressure), but is provided in the drainage flow path 37 to discharge the discharge pressure from the water-cooled heat exchanger 20 to the cooling water. It may be detected as a pressure. That is, the water pressure detection of the cooling water is mainly based on whether or not a sufficient amount of cooling water sufficient to be able to exchange heat is supplied to the water-cooled heat exchanger 20. It also detects the presence or absence of breakage of the channel 34 or the drainage channel 37.

流量検知センサ３６は、排水流路３７の吐出流量を検知しているが、給水流路３４に設けて水冷式熱交換機２０への給水流量（導入流量との言う）を検知するようにしても良い。すなわち、冷却水の流量は、主に水冷式熱交換機２０内や給水／排水流路内へのスケール付着による流量低減や、図示しないポンプの故障や給水流路３４及び排水流路３７の破損の有無を検知することに成る。流量検知手段としては流量検知センサ３６ではなく、デジタル方式の流量計３６であっても良い。  The flow rate detection sensor 36 detects the discharge flow rate of the drainage flow path 37, but may be provided in the water supply flow path 34 to detect the water supply flow rate (referred to as the introduction flow rate) to the water-cooled heat exchanger 20. good. That is, the flow rate of the cooling water is reduced mainly due to the scale adhering in the water-cooled heat exchanger 20 and the water supply / drainage flow path, a pump failure (not shown), and the water supply flow path 34 and the drainage flow path 37 are damaged. It will be detected. The flow rate detection means may be a digital flow meter 36 instead of the flow rate detection sensor 36.

電磁弁３１は、給水流路３４に設けて、同流路を開閉することで、水冷式熱交換機２０への冷却水の流通を制御しているが、排水流路３７側に設けても同様の機能を果たすことができる。水熱源としての冷却水としては、地下水、水道水、クーリングタワーで用いる水、貯水されている水や工業用水、不凍液等が挙げられる。本形態では電磁弁３１を開閉することで、水冷式熱交換機２０への冷却水の流通を制御しているが、電磁弁３１を設けずに冷却水を供給するポンプを制御手段４０でオン／オフ制御して水冷式熱交換機２０への冷却水の流通を制御するようにしても良い。  The electromagnetic valve 31 is provided in the water supply flow path 34 and controls the circulation of the cooling water to the water-cooled heat exchanger 20 by opening and closing the flow path. Can fulfill the functions of Examples of the cooling water as a water heat source include ground water, tap water, water used in a cooling tower, stored water, industrial water, antifreeze, and the like. In this embodiment, the flow of the cooling water to the water-cooled heat exchanger 20 is controlled by opening and closing the electromagnetic valve 31, but the pump for supplying the cooling water without providing the electromagnetic valve 31 is turned on / off by the control means 40. You may make it control off and control the distribution | circulation of the cooling water to the water-cooled heat exchanger 20. FIG.

本発明の一形態であるハイブリッド空調装置の概略構成図である。  It is a schematic block diagram of the hybrid air conditioner which is one form of this invention. ハイブリッド空調装置の制御手段とこれにつながる構成要素を示すブロック図である。  It is a block diagram which shows the control means of a hybrid air conditioner, and the component connected to this. 操作部の一形態を示す平面図である。  It is a top view which shows one form of an operation part. 制御手段による基本動作処理の一形態を示すフローチャートである。  It is a flowchart which shows one form of the basic operation process by a control means. 冷房運転処理の一形態を示すフローチャートである。  It is a flowchart which shows one form of a cooling operation process. 暖房運転処理の一形態を示すフローチャートである。  It is a flowchart which shows one form of heating operation processing. 水冷システムの動作を示すフローチャートである。  It is a flowchart which shows operation | movement of a water cooling system. 空冷システムの動作を示すフローチャートである。  It is a flowchart which shows operation | movement of an air cooling system. 熱交換媒体の加熱時の特性を示すモリエ線図である。  It is a Mollier diagram which shows the characteristic at the time of the heating of a heat exchange medium. 熱交換媒体の冷却時の特性を示すモリエ線図である。  It is a Mollier diagram which shows the characteristic at the time of cooling of a heat exchange medium.

符号の説明Explanation of symbols

１ ハイブリッド空調装置
４ 流路内
４Ａ 第２の経路
４Ｂ 第１の経路
５ 空冷式熱交換機
１１ 空調機器
２０ 水冷式熱交換機
２２〜２５ 切換手段
３０ 冷却水経路
３１ 開閉手段
３２ 水圧検知手段
３３，３４ 温度検知手段
３６ 流量検知手段
３８ 温度検知手段
４０ 制御装置
ＷＴ１−ｍａｘ１，ＷＴ２−ｍａｘ１ 下限温度
ＷＴ１−ｍａｘ２、ＷＴ２−ｍａｘ２ 下限温度
ＷＴ１＋ｍａｘ１、ＷＴ２＋ｍａｘ１ 上限温度
ＷＴ１＋ｍａｘ２、ＷＴ２＋ｍａｘ２ 上限温度
ＷＴ１−ｍａｘ１〜ＷＴ２−ｍａｘ１ 下限温度範囲
ＷＴ１−ｍａｘ２〜ＷＴ２−ｍａｘ２ 下限温度範囲
ＷＴ１＋ｍａｘ１〜ＷＴ２＋ｍａｘ１ 上限温度範囲
ＷＴ１＋ｍａｘ２〜ＷＴ２＋ｍａｘ２ 上限温度範囲DESCRIPTION OF SYMBOLS 1 Hybrid air conditioner 4 In a flow path 4A 2nd path | route 4B 1st path | route 5 Air cooling type heat exchanger 11 Air conditioning equipment 20 Water cooling type heat exchanger 22-25 Switching means 30 Cooling water path 31 Opening and closing means 32 Water pressure detection means 33,34 Temperature detection means 36 Flow rate detection means 38 Temperature detection means 40 Control device WT1-max1, WT2-max1 Lower limit temperature WT1-max2, WT2-max2 Lower limit temperature WT1 + max1, WT2 + max1 Upper limit temperature WT1 + max2, WT2 + max2 Upper limit temperature WT1-max1 to WT2-max1 Lower limit Temperature range WT1-max2 to WT2-max2 Lower limit temperature range WT1 + max1 to WT2 + max1 Upper limit temperature range WT1 + max2 to WT2 + max2 Upper limit temperature range

Claims (6)

空調機器との間で熱交換媒体を循環させる流路内を循環する熱交換媒体に対して気体を用いて熱交換する空冷式熱交換機が設けらたれ第１の経路と、前記流路内を循環する熱交換媒体に対して冷却水を用いて熱交換する水冷式熱交換機が設けられた第２の経路と、前記熱交換媒体が流れる経路を第１の経路または第２の経路に切換る切換手段と、前記水冷式熱交換機に冷却水を流通させる冷却水経路とを有するハイブリッド空調装置の制御装置であって、
前記冷却水の温度を検知する温度検知手段からの温度情報が少なくとも上限温度または上限温度範囲を超える場合には前記熱交換媒体が流れる経路を第１の経路へ切換え、前記温度情報が下限温度または下限温度範囲を超える場合には前記熱交換媒体が流れる経路を第２の経路へ切換るように前記切換手段を制御する冷却モードを少なくとも備えたハイブリッド空調装置の制御装置。An air-cooled heat exchanger for exchanging heat using a gas with respect to the heat exchange medium that circulates in the flow path that circulates the heat exchange medium with the air conditioner is provided. The second path provided with a water-cooled heat exchanger for exchanging heat with the cooling water for the circulating heat exchange medium and the path through which the heat exchange medium flows are switched to the first path or the second path. A control device for a hybrid air conditioner having switching means and a cooling water path for circulating cooling water through the water-cooled heat exchanger,
When the temperature information from the temperature detecting means for detecting the temperature of the cooling water exceeds at least the upper limit temperature or the upper limit temperature range, the path through which the heat exchange medium flows is switched to the first path, and the temperature information is the lower limit temperature or A control device for a hybrid air conditioner comprising at least a cooling mode for controlling the switching means so that a path through which the heat exchange medium flows is switched to a second path when a lower limit temperature range is exceeded. 空調機器との間で熱交換媒体を循環させる流路内を循環する熱交換媒体に対して気体を用いて熱交換する空冷式熱交換機が設けらたれ第１の経路と、前記流路内を循環する熱交換媒体に対して冷却水を用いて熱交換する水冷式熱交換機が設けられた第２の経路と、前記熱交換媒体が流れる経路を第１の経路または第２の経路に切換る切換手段と、前記水冷式熱交換機に冷却水を流通させる冷却水経路とを有するハイブリッド空調装置の制御装置であって、
前記冷却水の温度を検知する温度検知手段からの温度情報が少なくとも下限温度または下限温度範囲を超える場合には前記熱交換媒体が流れる経路を第１の経路へ切換え、前記温度情報が上限温度または上限温度範囲を超える場合には前記熱交換媒体が流れる経路を第２の経路へ切換るように前記切換手段を制御する加熱モードを少なくとも備えたハイブリッド空調装置の制御装置。An air-cooled heat exchanger for exchanging heat using a gas with respect to the heat exchange medium that circulates in the flow path that circulates the heat exchange medium with the air conditioner is provided. The second path provided with a water-cooled heat exchanger for exchanging heat with the cooling water for the circulating heat exchange medium and the path through which the heat exchange medium flows are switched to the first path or the second path. A control device for a hybrid air conditioner having switching means and a cooling water path for circulating cooling water through the water-cooled heat exchanger,
When the temperature information from the temperature detecting means for detecting the temperature of the cooling water exceeds at least the lower limit temperature or the lower limit temperature range, the path through which the heat exchange medium flows is switched to the first path, and the temperature information is the upper limit temperature or A control device for a hybrid air conditioner comprising at least a heating mode for controlling the switching means so that the path through which the heat exchange medium flows is switched to a second path when an upper limit temperature range is exceeded. 請求項１または２記載のハイブリッド空調装置の制御装置において、
前記冷却水経路の冷却水の圧力を検知する水圧検知手段からの検知情報が所定圧に満たない場合に、前記熱交換媒体が流れる経路を第１の経路へ切換えるように前記切換手段を制御するハイブリッド空調装置の制御装置。In the control apparatus of the hybrid air conditioner according to claim 1 or 2,
When the detection information from the water pressure detecting means for detecting the pressure of the cooling water in the cooling water path is less than a predetermined pressure, the switching means is controlled to switch the path through which the heat exchange medium flows to the first path. Control device for hybrid air conditioner. 請求項１または２記載のハイブリッド空調装置の制御装置において、
前記冷却水経路の冷却水の流量を検知する流量検知手段からの検知情報が所定流量に満たない場合、前記熱交換媒体が流れる経路を第１の経路へ切換えるように前記切換手段を制御するハイブリッド空調装置の制御装置。In the control apparatus of the hybrid air conditioner according to claim 1 or 2,
A hybrid that controls the switching means to switch the path through which the heat exchange medium flows to the first path when detection information from the flow rate detection means for detecting the flow rate of the cooling water in the cooling water path is less than a predetermined flow rate. Control device for air conditioner. 請求項１または２記載のハイブリッド空調装置の制御装置において、
前記水冷式熱交換機の表面温度を検知する温度検知手段からの検知情報が所定温度よりも高い場合、前記熱交換媒体が流れる経路を第１の経路へ切換えるように前記切換手段を制御するハイブリッド空調装置の制御装置。In the control apparatus of the hybrid air conditioner according to claim 1 or 2,
Hybrid air conditioning for controlling the switching means to switch the path through which the heat exchange medium flows to the first path when the detection information from the temperature detection means for detecting the surface temperature of the water-cooled heat exchanger is higher than a predetermined temperature. Control device for the device. 請求項１乃至５の何れかに記載のハイブリッド空調装置の制御装置において、
前記切換手段を制御して前記熱交換媒体が流れる経路を第１の経路へ切換えた後、前記冷却水経路を開閉する開閉手段を間接的に開閉制御するハイブリッド空調装置の制御装置。In the control apparatus of the hybrid air conditioner in any one of Claims 1 thru | or 5,
A control device for a hybrid air conditioner that indirectly opens and closes an opening and closing means for opening and closing the cooling water path after controlling the switching means to switch the path through which the heat exchange medium flows to the first path.
JP2004249345A 2004-08-01 2004-08-01 Control device for hybrid air conditioner Pending JP2006046880A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102445017A (en) * 2011-09-16 2012-05-09 西安君生实业有限公司 Host machine of air cooling and water cooling type cold-hot water air conditioner
CN102650465A (en) * 2012-05-10 2012-08-29 南京佳力图空调机电有限公司 Refrigerating system of air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102445017A (en) * 2011-09-16 2012-05-09 西安君生实业有限公司 Host machine of air cooling and water cooling type cold-hot water air conditioner
CN102650465A (en) * 2012-05-10 2012-08-29 南京佳力图空调机电有限公司 Refrigerating system of air conditioner

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