JP5869648B1 - Air conditioning system - Google Patents

Air conditioning system Download PDF

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JP5869648B1
JP5869648B1 JP2014219819A JP2014219819A JP5869648B1 JP 5869648 B1 JP5869648 B1 JP 5869648B1 JP 2014219819 A JP2014219819 A JP 2014219819A JP 2014219819 A JP2014219819 A JP 2014219819A JP 5869648 B1 JP5869648 B1 JP 5869648B1
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water
temperature
air
heat exchange
heat
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JP2016085013A (en
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木村　恵一
恵一 木村
森田　満津雄
満津雄 森田
浦野　勝博
勝博 浦野
後藤　和也
和也 後藤
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木村工機株式会社
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Priority to JP2014219819A priority Critical patent/JP5869648B1/en
Priority to KR1020150134599A priority patent/KR20160051596A/en
Priority to CN201520745148.8U priority patent/CN205014533U/en
Priority to CN201510614884.4A priority patent/CN105571023B/en
Priority to US14/919,616 priority patent/US20160123638A1/en
Priority to MYPI2015703884A priority patent/MY178472A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0003—Exclusively-fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/005—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00 using primary and secondary systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1927—Control of temperature characterised by the use of electric means using a plurality of sensors
    • G05D23/193—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces
    • G05D23/1932—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces
    • G05D23/1934—Control of temperature characterised by the use of electric means using a plurality of sensors sensing the temperaure in different places in thermal relationship with one or more spaces to control the temperature of a plurality of spaces each space being provided with one sensor acting on one or more control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

【課題】省エネ性と快適性を両立できる空気調和システムを得る。【解決手段】 空調機１と、熱交換用水の温度を調整し切換信号によって低エクセルギーの第１設定水温と高エクセルギーの第２設定水温とに熱交換用水の温度を切換える熱源装置２と、制御装置５と、を備える。空調機１が、熱交換用水が流れる熱交換器３と、熱交換器３に流れる熱交換用水の水量を増減して熱交換器３を流れる前と流れた後の熱交換用水の水温度差と空調用空気の給気温度とを調整する水量調整弁６と、を備える。制御装置５が、屋内温度が設定屋内温度の場合は第１設定水温への切換信号を出力しかつ熱交換用水の水温度差が設定水温度差になるように制御すると共に屋内温度が設定屋内温度外の場合は第２設定水温への切換信号を出力しかつ給気温度が設定給気温度になるように制御する切換制御部１３を、備える。【選択図】図１An air conditioning system capable of achieving both energy saving and comfort is obtained. SOLUTION: An air conditioner 1, a heat source device 2 that adjusts the temperature of water for heat exchange and switches the temperature of water for heat exchange between a first set water temperature of low exergy and a second set water temperature of high exergy by a switching signal, and And a control device 5. Difference in water temperature between the heat exchanger 3 in which the air conditioner 1 flows and the amount of water for heat exchange flowing in the heat exchanger 3 before and after flowing through the heat exchanger 3 by increasing or decreasing the amount of water for heat exchange. And a water amount adjusting valve 6 that adjusts the supply temperature of the air-conditioning air. When the indoor temperature is the set indoor temperature, the control device 5 outputs a switching signal to the first set water temperature and controls the water temperature difference of the heat exchange water to be the set water temperature difference, and the indoor temperature is set indoors. When it is outside the temperature, a switching control unit 13 that outputs a switching signal to the second set water temperature and controls the supply air temperature to be the set supply air temperature is provided. [Selection] Figure 1

Description

本発明は空気調和システムに関するものである。   The present invention relates to an air conditioning system.

熱交換用水を空調エネルギーとして用いる空気調和システムは、熱交換用水の温度を調整する熱源装置と、熱交換用水が流れる熱交換器で空調用空気の給気温度を調整して屋内の空調を行う空調機と、空調機および熱源装置に熱交換用水を循環させる水循環機器などにて構成している。   An air conditioning system that uses heat exchange water as air conditioning energy adjusts the supply temperature of air conditioning air with a heat source device that adjusts the temperature of the heat exchange water and a heat exchanger through which the heat exchange water flows, and performs indoor air conditioning It consists of an air conditioner and a water circulation device that circulates heat exchange water through the air conditioner and the heat source device.

特開２０１３−５３８３６号公報JP 2013-53836 A

熱源装置にはヒートポンプ式チラーや吸収式冷凍機などがあり、空調機の熱交換器で空調用空気に対して吸熱または放熱して設定水温から外れた熱交換用水を、熱源装置で冷却または加熱することで設定水温に調整している。そのため、熱交換用水が冷水の場合は設定水温が高くなるほど熱源装置のエネルギー消費量が減り、熱交換用水が温水の場合は設定水温が低くなるほど熱源装置のエネルギー消費量が減る。この設定水温は空調負荷が最大のときを基準にして常時一定になるようにしているため、屋内温度が設定屋内温度で安定しているときや中間期などのように空調負荷が小さくなると無駄にエネルギーを消費する。しかも、年間を通して考えると空調負荷が最大でない時間が大半であるため、浪費する熱源装置のエネルギー消費量が膨大になる問題があった。   Heat source devices include heat pump chillers and absorption refrigerators, and heat exchange water that has deviated from the set water temperature by absorbing or radiating air to the air conditioning air with the heat exchanger of the air conditioner is cooled or heated with the heat source device. It is adjusted to the set water temperature. Therefore, when the heat exchange water is cold water, the energy consumption of the heat source device decreases as the set water temperature increases, and when the heat exchange water is hot water, the energy consumption of the heat source device decreases as the set water temperature decreases. Since the set water temperature is always constant based on the maximum air conditioning load, it is useless when the indoor temperature is stable at the set indoor temperature or when the air conditioning load becomes small, such as in the middle period. Consume energy. Moreover, since most of the time when the air conditioning load is not maximum is considered throughout the year, there is a problem that the energy consumption of the wasted heat source device becomes enormous.

本発明は上記課題を解決するため、空調用空気の給気温度を熱交換用水で調整すると共に前記空調用空気を屋内へ送風することで空調する空調機と、前記熱交換用水の温度を調整すると共に切換信号によって予め設定した低エクセルギーの第１設定水温と予め設定した高エクセルギーの第２設定水温とに前記熱交換用水の温度を切換える熱源装置と、制御装置と、を備え、前記空調機が、前記熱交換用水が流れる熱交換器と、前記熱交換器に流れる前記熱交換用水の水量を増減して前記熱交換器を流れる前と流れた後の前記熱交換用水の水温度差と前記空調用空気の前記給気温度とを調整する水量調整弁と、を備え、前記制御装置が、屋内温度が予め設定した設定屋内温度の場合は前記第１設定水温への切換信号を出力しかつ前記水量調整弁を操作して前記熱交換用水の前記水温度差が予め設定した設定水温度差になるように制御すると共に前記屋内温度が前記設定屋内温度外の場合は前記第２設定水温への切換信号を出力しかつ前記水量調整弁を操作して前記給気温度が予め設定した設定給気温度になるように制御する切換制御部を、備えたことを最も主要な特徴とする。   In order to solve the above-mentioned problems, the present invention adjusts the supply temperature of air-conditioning air with heat-exchange water and adjusts the temperature of the heat-exchange water with an air-conditioner that air-conditions by blowing the air-conditioning air indoors. And a heat source device that switches the temperature of the heat exchange water between a first set water temperature of low exergy preset by a switching signal and a second set water temperature of preset high exergy, and a control device, The temperature of the water for heat exchange before and after flowing through the heat exchanger by increasing or decreasing the amount of water for the heat exchange flowing through the heat exchanger by an air conditioner flowing through the heat exchanger. A water amount adjustment valve that adjusts the difference and the supply air temperature of the air-conditioning air, and the control device outputs a switching signal to the first set water temperature when the indoor temperature is a preset indoor temperature. Output and the water amount adjusting valve The operation is controlled so that the water temperature difference of the heat exchange water becomes a preset set water temperature difference, and when the indoor temperature is outside the set indoor temperature, a switching signal to the second set water temperature is output. In addition, the main feature is that it includes a switching control unit that operates the water amount adjusting valve to control the supply air temperature to be a preset supply air temperature.

請求項１の発明によれば、
屋内温度が設定屋内温度となって空調負荷が小さくなる場合などにおいて、熱交換用水を低エクセルギーの第１設定水温として熱源装置のエネルギー消費量を大幅削減できる。このエクセルギーとは「ある系が周囲と平衡状態に達するまでに取り出すことのできる最大の仕事量（エネルギー）のこと」であり、水温を比較した場合、熱交換用水が冷水の場合は第１設定水温＞第２設定水温、熱交換用水が温水の場合は第１設定水温＜第２設定水温となるので、熱源装置のエネルギーの浪費を大幅削減できる。
同時に、熱交換器を流れる前と流れた後の熱交換用水の水温度差を制御して一定（設定水温度差）にすることで、熱源装置による熱交換用水への急冷却や急加熱などの繰り返しを防止してエネルギー浪費を削減することができ、かつ、設定水温度差を通常より倍以上（例えば５℃から１０℃）に大きくすることで、熱交換器を流れる熱交換用水の水量を半分以下にして熱交換用水の送水エネルギー消費量の大幅削減も図れる。
また、屋内温度が設定屋内温度外となって空調負荷が大きくなる場合などにおいて、熱交換用水を高エクセルギーの第２設定水温とすることで、大能力で効率良く屋内温度変動を最小限に抑えながら迅速に設定屋内温度にして安定性と快適性に優れた空調ができ、かつ、給気温度を制御して通常よりも給気風量が少なくなる設定給気温度（例えば冷房時１３℃）にすることで、送風エネルギー消費量の大幅削減も図れる。 According to the invention of claim 1,
When the indoor temperature becomes the set indoor temperature and the air conditioning load becomes small, the energy consumption of the heat source device can be significantly reduced by using the heat exchange water as the first set water temperature with low exergy. This exergy is the "maximum work (energy) that can be extracted before a system reaches equilibrium with the surroundings." When comparing the water temperature, the first is when the water for heat exchange is cold water. When the set water temperature is greater than the second set water temperature and the heat exchange water is hot water, the first set water temperature is less than the second set water temperature, so that waste of energy of the heat source device can be greatly reduced.
At the same time, by controlling the water temperature difference between the heat exchange water before and after flowing through the heat exchanger to make it constant (set water temperature difference), rapid cooling or rapid heating to the heat exchange water by the heat source device, etc. The amount of water used for heat exchange flowing through the heat exchanger can be reduced by increasing the set water temperature difference to more than twice (for example, 5 ° C to 10 ° C). The energy consumption of water for heat exchange can be greatly reduced by reducing the energy consumption to less than half.
In addition, when the indoor temperature is outside the set indoor temperature and the air conditioning load becomes large, etc., the heat exchange water is set to the second set water temperature with high exergy, and the indoor temperature fluctuation is minimized with high capacity. A set indoor temperature that can be quickly adjusted to the set indoor temperature while maintaining excellent stability and comfort, and the supply air temperature is controlled to reduce the supply air volume from normal (for example, 13 ° C during cooling) By doing so, the blast energy consumption can be greatly reduced.

請求項２の発明によれば、
屋内温度が設定屋内温度となってから設定時間（例えば３０分以上）を過ぎても設定屋内温度許容範囲にあれば頻繁な空調負荷変動が無いとみなせるため、熱交換用水の温度切換が頻発するチャタリングを引き起こすような切換信号の出力を簡易に防止でき、熱源装置の信頼性と耐久性が向上する。
かつ、熱源装置の熱交換用水の温度切換にともなう空調能力の過大な変動（過冷却や過加熱）を、設定屋内温度許容範囲を設けることで緩和して、屋内温度のオーバーシュート・アンダーシュートを簡易に抑制でき、安定性と快適性に優れた空調を行える。 According to the invention of claim 2,
Even if a set time (for example, 30 minutes or more) has passed after the indoor temperature reaches the set indoor temperature, if the set indoor temperature is within the allowable range, it can be considered that there is no frequent air-conditioning load fluctuation. The output of a switching signal that causes chattering can be easily prevented, and the reliability and durability of the heat source device are improved.
In addition, excessive fluctuations in the air conditioning capacity (overcooling and overheating) associated with the temperature switching of the heat exchange water of the heat source device can be mitigated by providing a set indoor temperature allowable range, and indoor temperature overshoot / undershoot can be reduced. Air conditioning can be easily controlled and has excellent stability and comfort.

請求項３の発明によれば、
熱源装置のエネルギー消費量を削減するために熱交換用水が冷水の場合は第１設定水温を９〜１１℃かつ第２設定水温を６〜８℃に設定するのが最適で、同様に熱交換用水が温水の場合は熱交換用水の第１設定水温を３４〜３６℃かつ第２設定水温を３９〜４１℃に設定するのが最適となる。屋内温度が設定屋内温度の場合に熱交換器を流れる前と流れた後の熱交換用水の設定水温度差は、送水エネルギー及び熱源装置のエネルギー消費量を削減するために９〜１１℃に設定するのが最適となる。 According to the invention of claim 3,
In order to reduce the energy consumption of the heat source device, when the heat exchange water is cold water, it is optimal to set the first set water temperature to 9 to 11 ° C and the second set water temperature to 6 to 8 ° C. When the irrigation water is hot water, it is optimal to set the first set water temperature for heat exchange water to 34 to 36 ° C and the second set water temperature to 39 to 41 ° C. When the indoor temperature is the set indoor temperature, the set water temperature difference before and after flowing through the heat exchanger is set to 9 to 11 ° C in order to reduce the water consumption energy and the energy consumption of the heat source device It is best to do.

請求項４の発明によれば、
１つの熱交換器で冷房と暖房を自由に切換えでき、冷房専用と暖房専用の２つの熱交換器を空調機に設けて使用する場合と比べて、送風動力を削減できて省エネとなり、空調機がコンパクト化となる。中間期などの低負荷時に、冷やし過ぎ温め過ぎを無くし、快適性を確実に保障することができる。 According to the invention of claim 4,
Cooling and heating can be switched freely with one heat exchanger, and compared with the case where two heat exchangers dedicated for cooling and heating are installed in the air conditioner, the blasting power can be reduced and energy can be saved. Becomes compact. At the time of low load such as an intermediate period, it is possible to eliminate over-cooling and over-warming and to ensure comfort.

請求項５の発明によれば、
通風抵抗が小さくて圧力損失が減少し、かつ、熱交換器と空調用空気との接触面積（伝熱面積)が増して、一層熱交換効率が良好となり省エネ性が向上する。 According to the invention of claim 5,
Ventilation resistance is low, pressure loss is reduced, and the contact area (heat transfer area) between the heat exchanger and air for air conditioning is increased, further improving heat exchange efficiency and improving energy saving.

図１は、本発明の空気調和システムの一実施例を示しており、この空気調和システムは、空調用空気を熱交換用水で冷却又は加熱してその給気温度を調整すると共に空調用空気を屋内へ送風することで空調する空調機１と、熱交換用水の温度を調整すると共に切換信号によって予め設定した低エクセルギーの第１設定水温と予め設定した高エクセルギーの第２設定水温とに熱交換用水の温度を切換えるヒートポンプ式チラー等の熱源装置２と、熱交換用水を熱源装置２と空調機１の熱交換器３との間で循環させる水循環機器４と、制御装置５と、を備えている。   FIG. 1 shows an embodiment of the air conditioning system of the present invention. This air conditioning system adjusts the supply air temperature by cooling or heating air conditioning air with heat exchange water, The air conditioner 1 that air-conditions by blowing air indoors, the temperature of the heat exchange water is adjusted, and the first set water temperature of low exergy preset by the switching signal and the second set water temperature of preset high exergy are set. A heat source device 2 such as a heat pump chiller for switching the temperature of the heat exchange water, a water circulation device 4 for circulating the heat exchange water between the heat source device 2 and the heat exchanger 3 of the air conditioner 1, and a control device 5. I have.

空調機１は、ケーシング内に、熱交換用水が流れる１つの熱交換器３と、熱交換器３に流れる熱交換用水の水量を増減して熱交換器３を流れる前と流れた後の熱交換用水の水温度差と空調用空気の給気温度とを調整する比例式の水量調整弁６と、空調用空気をケーシング内に取入れて熱交換器３を介してケーシング外へ送風するファン７と、を少なくとも備えている。熱交換器３で熱交換された空調用空気は冷風又は温風となって、図示省略のダクトや吹出口を介して、屋内の被空調空間に給気される。なお、図例では省略したが加湿器やフィルタをケーシング内に設けたり、水量調整弁６をケーシング外に設けるも自由である。   The air conditioner 1 includes a heat exchanger 3 in which heat exchange water flows in the casing, and heat before and after flowing through the heat exchanger 3 by increasing or decreasing the amount of heat exchange water flowing in the heat exchanger 3. A proportional water amount adjustment valve 6 that adjusts the water temperature difference of the replacement water and the supply temperature of the air-conditioning air, and a fan 7 that takes the air-conditioning air into the casing and blows it out of the casing via the heat exchanger 3. And at least. The air-conditioning air heat-exchanged by the heat exchanger 3 becomes cold air or hot air, and is supplied to the indoor air-conditioned space through a duct and a blower outlet (not shown). Although omitted in the figure, it is also possible to provide a humidifier or a filter in the casing, or to provide the water amount adjusting valve 6 outside the casing.

熱交換器３は、プレートフィンコイルと呼ばれるもので詳細な図示は省略するが、通風自在に設けられた多数の伝熱板に多数の伝熱管を挿着して成り、伝熱管内を流れる熱交換用水と熱交換器３を通過する空調用空気が伝熱管及び伝熱板を介して熱交換する。この伝熱管は楕円管にするのが好ましいが円形管でもよい。   The heat exchanger 3 is called a plate fin coil and is not shown in detail. However, the heat exchanger 3 is formed by inserting a large number of heat transfer tubes into a large number of heat transfer plates provided to allow ventilation, and the heat flowing in the heat transfer tubes. The water for exchange and the air for air conditioning passing through the heat exchanger 3 exchange heat through the heat transfer pipe and the heat transfer plate. The heat transfer tube is preferably an elliptical tube, but may be a circular tube.

熱源装置２は、空調用空気に対して空調機１の熱交換器３で吸熱または放熱して設定水温から外れた熱交換用水を冷却または加熱することで設定水温に調整すると共に、冷水の熱交換用水の温度調整と温水の熱交換用水の温度調整を同時に行う。水循環機器４は、冷水の熱交換用水が流れる冷水循環路８と、温水の熱交換用水が流れる温水循環路９と、冷水循環路８と温水循環路９と熱交換器３とを連結すると共に熱交換器３を流れる熱交換用水を冷水と温水に切換える水循環路切換機構１０と、送水ポンプ１１と、を備え、これらを配管接続して構成する。   The heat source device 2 adjusts to the set water temperature by cooling or heating the heat exchange water that deviates from the set water temperature by absorbing or radiating heat from the air-conditioning air with the heat exchanger 3 of the air conditioner 1 and the heat of the cold water Simultaneously adjust the temperature of the replacement water and the temperature of the hot water heat exchange water. The water circulation device 4 connects the cold water circulation path 8 through which cold water heat exchange water flows, the hot water circulation path 9 through which hot water heat exchange water flows, the cold water circulation path 8, the hot water circulation path 9, and the heat exchanger 3. A water circulation path switching mechanism 10 for switching heat exchange water flowing through the heat exchanger 3 to cold water and hot water, and a water supply pump 11 are provided and connected by piping.

水循環路切換機構１０は、第１の三方切換弁１２ａを介して冷水循環路８の冷水往部と温水循環路９の温水往部と熱交換器３を連結すると共に、第２の三方切換弁１２ｂを介して冷水循環路８の冷水復部と温水循環路９の温水復部と熱交換器３を連結して構成する。なお、図例では複数の空調機１に対して１つの水循環路切換機構１０を設けているが、水循環路切換機構１０を各々の空調機１毎に設けてもよい。さらに、熱交換用水の循環路は冷水と温水を同時に流す４管式を示したが、冷水と温水を切換えて流す２管式とするも自由である。   The water circulation path switching mechanism 10 connects the cold water circulation section of the cold water circulation path 8, the warm water circulation section of the hot water circulation path 9, and the heat exchanger 3 via the first three-way switching valve 12a, and the second three-way switching valve. The cold water return section of the cold water circulation path 8, the hot water return section of the hot water circulation path 9, and the heat exchanger 3 are connected via 12b. In the illustrated example, one water circulation path switching mechanism 10 is provided for a plurality of air conditioners 1, but the water circulation path switching mechanism 10 may be provided for each air conditioner 1. Furthermore, although the heat exchange water circulation path is a four-pipe type in which cold water and hot water flow simultaneously, a two-pipe type in which cold water and hot water are switched to flow can be freely used.

制御装置５は、図示省略の熱交換用水の往復温度検出器、屋内温度検出器及び給気温度検出器と、屋内温度が予め設定した設定屋内温度の場合は第１設定水温への切換信号を出力しかつ水量調整弁６を操作して熱交換用水の水温度差のみが予め設定した設定水温度差になるように制御すると共に屋内温度が設定屋内温度外の場合は第２設定水温への切換信号を出力しかつ水量調整弁６を操作して空調用空気の給気温度のみが予め設定した設定給気温度になるように制御する切換制御部１３と、屋内温度が予め設定された設定屋内温度許容範囲を外れた場合は第２設定水温への切換信号を出力すると共に屋内温度が設定屋内温度に到達して予め設定した設定時間経過後に屋内温度が設定屋内温度許容範囲を維持している場合は第１設定水温への切換信号を出力する緩衝制御部１４と、設定部１５と、を備えている。これらは、センサやマイコン等にて構成する。 The control device 5 includes a reciprocating temperature detector for heat exchange water, an indoor temperature detector and a supply air temperature detector (not shown), and a switching signal to the first set water temperature when the indoor temperature is a preset indoor temperature. Output and control the water amount adjusting valve 6 so that only the water temperature difference of the heat exchange water becomes a preset set water temperature difference, and when the indoor temperature is outside the set indoor temperature, the second set water temperature is set. A switching control unit 13 that outputs a switching signal and operates the water amount adjusting valve 6 to control only the supply air temperature of the air-conditioning air to a preset supply air temperature, and a preset indoor temperature When the indoor temperature is outside the allowable range, a switch signal to the second set water temperature is output and the indoor temperature reaches the set indoor temperature and the indoor temperature maintains the set indoor temperature allowable range after a preset time has elapsed. If there is a first set water temperature It includes a buffer control unit 14 for outputting a signal, a setting unit 15, a. These are constituted by a sensor, a microcomputer or the like.

熱交換用水が冷水の場合は第１設定水温を９〜１１℃かつ第２設定水温を６〜８℃とし、熱交換用水が温水の場合は熱交換用水の第１設定水温を３４〜３６℃かつ第２設定水温を３９〜４１℃とする。屋内温度が予め設定した設定屋内温度の場合に熱交換器３を流れる前と流れた後の熱交換用水の設定水温度差は９〜１１℃とする。設定給気温度は１３〜１６℃とし、設定時間は２０〜４０分とし、設定屋内温度許容範囲は、熱交換用水が冷水のときが設定屋内温度からプラス１〜２℃までとし、熱交換用水が温水のときが設定屋内温度からマイナス１〜２℃までとする。上述の設定値は設定部１５にて予め設定する。   When the heat exchange water is cold water, the first set water temperature is 9 to 11 ° C. and the second set water temperature is 6 to 8 ° C. When the heat exchange water is hot water, the first set water temperature is 34 to 36 ° C. And 2nd setting water temperature shall be 39-41 degreeC. When the indoor temperature is a preset indoor temperature, the set water temperature difference between the heat exchange water before and after flowing through the heat exchanger 3 is 9 to 11 ° C. The set supply air temperature is 13 to 16 ° C., the set time is 20 to 40 minutes, and the set indoor temperature allowable range is from the set indoor temperature to plus 1 to 2 ° C. when the heat exchange water is cold water. When the temperature is hot water, the temperature is set to minus 1-2 ° C from the set indoor temperature. The above set values are set in advance by the setting unit 15.

図２は空調運転の一例を示し、空調運転開始後、第２設定水温への切換信号を出力し、屋内温度が設定屋内温度の場合は経過時間をゼロリセットして経過時間の計測を開始する。その経過時間が設定時間を超えていれば第１設定水温への切換信号を出力し、超えていなければ水温度差が設定水温度差になるように水量調整弁６で制御し、屋内温度が設定屋内温度許容範囲を外れるまで繰り返す。屋内温度が設定屋内温度許容範囲を外れた場合は第２設定水温への切換信号を出力し、空調運転開始後の第２設定水温切換信号出力から以後の処理を、空調運転を停止するまで繰り返す。なお、上述の空調運転は一例であって、その順序や処理内容の変更は自由である。   FIG. 2 shows an example of the air conditioning operation. After the air conditioning operation is started, a switching signal to the second set water temperature is output, and when the indoor temperature is the set indoor temperature, the elapsed time is reset to zero and the elapsed time measurement is started. . If the elapsed time exceeds the set time, a switch signal to the first set water temperature is output. If not, the water amount adjustment valve 6 controls the water temperature difference so that the water temperature difference becomes the set water temperature difference, and the indoor temperature is Repeat until the set indoor temperature tolerance is not met. When the indoor temperature falls outside the set indoor temperature allowable range, a switching signal to the second set water temperature is output, and the subsequent processing is repeated until the air conditioning operation is stopped from the second set water temperature switching signal output after the start of the air conditioning operation. . In addition, the above-mentioned air conditioning operation is an example, and the change of the order and processing content is free.

本発明は上述の実施例に限定されず、本発明の要旨を逸脱しない範囲で設計変更自由で、たとえば、空調機１に取入れる空調用空気は外気（屋外空気）、還気（屋内空気）、外気と還気の混合空気の何れであっても良く、空調機１の数の増減は自由である。また、図例では単独の制御装置５で複数の空調機１を一括して制御する例を示したが、制御装置５を各々の空調機１毎に設けて個々に制御するも自由である。   The present invention is not limited to the above-described embodiments, and the design can be freely changed without departing from the gist of the present invention. For example, the air-conditioning air taken into the air conditioner 1 is outside air (outdoor air) and return air (indoor air). Any of the mixed air of outside air and return air may be used, and the number of air conditioners 1 can be increased or decreased. Moreover, although the example which controls several air conditioners 1 collectively by the single control apparatus 5 was shown in the example of a figure, it is also free to provide the control apparatus 5 for every air conditioner 1, and to control it individually.

本発明の空気調和システムの全体構成を示す簡略説明図である。It is a simplified explanatory view showing the overall configuration of the air conditioning system of the present invention. 空調運転の一例を示すフローチャートである。It is a flowchart which shows an example of an air-conditioning driving | operation.

１ 空調機
２ 熱源装置
３ 熱交換器
４ 水循環機器
５ 制御装置
６ 水量調整弁
８ 冷水循環路
９ 温水循環路
１０ 水循環路切換機構
１３ 切換制御部
１４ 緩衝制御部 DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Heat source apparatus 3 Heat exchanger 4 Water circulation equipment 5 Control apparatus 6 Water quantity adjustment valve 8 Cold water circulation path 9 Hot water circulation path 10 Water circulation path switching mechanism 13 Switching control part 14 Buffer control part

Claims (5)

空調用空気の給気温度を熱交換用水で調整すると共に前記空調用空気を屋内へ送風することで空調する空調機（１）と、前記熱交換用水の温度を調整すると共に切換信号によって予め設定した低エクセルギーの第１設定水温と予め設定した高エクセルギーの第２設定水温とに前記熱交換用水の温度を切換える熱源装置（２）と、制御装置（５）と、を備え、
前記空調機（１）が、前記熱交換用水が流れる熱交換器（３）と、前記熱交換器（３）に流れる前記熱交換用水の水量を増減して前記熱交換器（３）を流れる前と流れた後の前記熱交換用水の水温度差と前記空調用空気の前記給気温度とを調整する比例式の水量調整弁（６）と、を備え、
前記制御装置（５）が、屋内温度が予め設定した設定屋内温度の場合は前記第１設定水温への切換信号を出力しかつ前記水量調整弁（６）を操作して前記水温度差のみが予め設定した設定水温度差になるように制御すると共に前記屋内温度が前記設定屋内温度外の場合は前記第２設定水温への切換信号を出力しかつ前記水量調整弁（６）を操作して前記給気温度のみが予め設定した設定給気温度になるように制御する切換制御部（１３）を、備えたことを特徴とする空気調和システム。 Adjusting the supply air temperature of the air conditioning air with the heat exchange water and air-conditioning the air conditioning air by blowing the air conditioning air indoors, and adjusting the temperature of the heat exchange water and setting in advance by a switching signal A heat source device (2) for switching the temperature of the heat exchange water between a first set water temperature of low exergy and a second set water temperature of high exergy set in advance, and a control device (5),
The air conditioner (1) flows through the heat exchanger (3) by increasing or decreasing the amount of water for the heat exchange flowing through the heat exchanger (3) and the heat exchanger (3) through which the water for heat exchange flows. A proportional water amount adjustment valve (6) that adjusts a difference in water temperature between the heat exchange water before and after flowing and the supply temperature of the air-conditioning air;
When the indoor temperature is a preset indoor temperature, the control device (5) outputs a switching signal to the first set water temperature and operates the water amount adjustment valve (6) to detect only the water temperature difference. A control is performed so that the preset water temperature difference is set in advance, and when the indoor temperature is outside the set indoor temperature, a switching signal to the second set water temperature is output and the water amount adjusting valve (6) is operated. An air conditioning system comprising: a switching control unit (13) for controlling only the supply air temperature to a preset supply air temperature. 制御装置（５）が、屋内温度が予め設定された設定屋内温度許容範囲を外れた場合は第２設定水温への切換信号を出力すると共に前記屋内温度が設定屋内温度に到達して予め設定した設定時間経過後に前記屋内温度が前記設定屋内温度許容範囲を維持している場合は第１設定水温への切換信号を出力する緩衝制御部（１４）を、備えた請求項１記載の空気調和システム。   The control device (5) outputs a switching signal to the second set water temperature when the indoor temperature is outside the preset set indoor temperature allowable range, and the indoor temperature reaches the set indoor temperature and is preset. The air conditioning system according to claim 1, further comprising a buffer control unit (14) that outputs a switching signal to the first set water temperature when the indoor temperature maintains the set indoor temperature allowable range after a set time has elapsed. . 熱交換用水が冷水の場合は第１設定水温９〜１１℃をかつ第２設定水温を６〜８℃とし、前記熱交換用水が温水の場合は前記熱交換用水の前記第１設定水温を３４〜３６℃かつ前記第２設定水温を３９〜４１℃とし、屋内温度が設定屋内温度の場合に前記熱交換用水の設定水温度差を９〜１１℃とした請求項１又は２に記載の空気調和システム。   When the heat exchange water is cold water, the first set water temperature is 9 to 11 ° C. and the second set water temperature is 6 to 8 ° C., and when the heat exchange water is hot water, the first set water temperature is 34 The air according to claim 1 or 2, wherein when the indoor temperature is a set indoor temperature, the set water temperature difference of the heat exchange water is 9-11 ° C when the second set water temperature is 39-41 ° C and the second set water temperature is 39-41 ° C. Harmony system. 冷水の熱交換用水の温度調整と温水の熱交換用水の温度調整を同時に行える熱源装置（２）と、前記熱交換用水を前記熱源装置（２）と熱交換器（３）との間で循環させる水循環機器（４）と、を備え、
空調機（１）に１つの前記熱交換器（３）を設け、前記水循環機器（４）が、前記冷水の前記熱交換用水が流れる冷水循環路（８）と、前記温水の前記熱交換用水が流れる温水循環路（９）と、前記冷水循環路（８）と前記温水循環路（９）と前記熱交換器（３）とを連結すると共に前記熱交換器（３）に流れる前記熱交換用水を前記冷水循環路（８）の前記冷水と前記温水循環路（９）の前記温水に切換える水循環路切換機構（１０）と、を備えた請求項１から３のいずれかに記載の空気調和システム。 A heat source device (2) capable of simultaneously adjusting the temperature of the cold water heat exchange water and the temperature of the hot water heat exchange water, and circulating the heat exchange water between the heat source device (2) and the heat exchanger (3) A water circulation device (4)
An air conditioner (1) is provided with one heat exchanger (3), and the water circulation device (4) includes a cold water circulation path (8) through which the heat exchange water for the cold water flows, and the heat exchange water for the hot water. The hot water circulation path (9) through which the water flows, the cold water circulation path (8), the hot water circulation path (9) and the heat exchanger (3) and the heat exchange flowing to the heat exchanger (3) The air conditioner according to any one of claims 1 to 3, further comprising: a water circulation path switching mechanism (10) for switching water to the cold water in the cold water circulation path (8) and the hot water in the hot water circulation path (9). system. 熱交換器（３）の伝熱管を楕円管にした請求項１から４のいずれかに記載の空気調和システム。   The air conditioning system according to any one of claims 1 to 4, wherein the heat transfer tube of the heat exchanger (3) is an elliptic tube.
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CN105571023B (en) 2018-08-17
CN205014533U (en) 2016-02-03

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