【０００１】
【発明の属する技術分野】
本発明はヒートポンプ蓄熱空調システムに関する。
【０００２】
【従来の技術】
例えば夏季の室内空調において、熱負荷の低い夜間は躯体に蓄熱し、熱負荷の高い日中は躯体に蓄えた冷熱を空調用の循環空気に放出させて空調し、空調機の電力負荷の平準化を図るシステムが知られている。
【０００３】
【発明が解決しようとする課題】
ところが、このように蓄熱を空調用の循環空気に利用するだけでは、熱負荷ピーク時に対応困難な場合があり、それに対処するには空調機の容量を大きくする必要がある。そのため大型でコストの掛かる空調機が必要となり、しかも、熱負荷のピーク時は比較的短期間・短時間で、それ以外の期間・時間はフル運転できず効率が悪くなり無駄が多かった。そこで、これらの問題点を解決するヒートポンプ空調システムを提供することを目的とする。
【０００４】
【課題を解決するための手段】
上記目的を達成するために、本発明は、冷媒循環回路を構成する蒸発器と凝縮器と圧縮機とを一体に設けたヒートポンプ式の空調機と、建物内に形成された蓄熱空間と被空調空間とに前記ヒートポンプ式空調機から前記蒸発器で熱交換した空調空気を送る給気路と、前記蓄熱空間と前記被空調空間とから前記ヒートポンプ式空調機に蒸発器用空気を送る還気路と、前記ヒートポンプ式空調機から屋外に前記凝縮器で熱交換した空気を送る排気路と、前記蓄熱空間と前記屋外から前記ヒートポンプ式空調機に凝縮器用空気を送る吸気路と、前記空調空気の前記蓄熱空間と前記被空調空間への給気割合と前記蒸発器用空気の前記蓄熱空間と前記被空調空間からの還気割合と前記蓄熱空間と前記屋外からの吸気割合とを調整自在なダンパ機構と、を備えた。さらに、冷媒循環回路を、空調機のケーシングに対して取出・収納自在に構成した。さらに、蒸発器と凝縮器のフィンチューブを楕円管で構成した。
【０００５】
【発明の実施の形態】
図１と図２は、本発明のヒートポンプ蓄熱空調システムの一実施例を示しており、このヒートポンプ蓄熱空調システムは、冷媒循環回路Ｃを構成する蒸発器２と凝縮器３と圧縮機４とを一体に設けたヒートポンプ式の空調機Ａと、建物内に形成された蓄熱空間Ｆと被空調空間Ｅとに前記ヒートポンプ式空調機Ａから前記蒸発器２で熱交換した空調空気を送る給気路５と、前記蓄熱空間Ｆと前記被空調空間Ｅとから前記ヒートポンプ式空調機Ａに蒸発器用空気を送る還気路６と、前記ヒートポンプ式空調機Ａから屋外に前記凝縮器３で熱交換した空気を送る排気路１４と、前記蓄熱空間Ｆと前記屋外から前記ヒートポンプ式空調機Ａに凝縮器用空気を送る吸気路１５と、前記空調空気の前記蓄熱空間Ｆと前記被空調空間Ｅへの給気割合と前記蒸発器用空気の前記蓄熱空間Ｆと前記被空調空間Ｅからの還気割合と前記蓄熱空間Ｆと前記屋外からの吸気割合とを調整自在なダンパ機構Ｄと、を備えている。なお、実線及び点線の白抜き矢印は送風方向を示す。
【０００６】
蓄熱空間Ｆは、蓄熱体としてのスラブなどの建物躯体と天井壁などにて形成された天井チャンバや床下チャンバなどである。Ｂはヒートポンプ式の外調機で、屋外からの外気を蒸発器と加湿器で温湿度調整して被空調空間Ｅと蓄熱空間Ｆへ所定割合で給気し、被空調空間Ｅからの還気を凝縮器で熱回収して屋外に排気する。この被空調空間Ｅと蓄熱空間Ｆへの給気割合はダンパ１６にて調整する。
【０００７】
空調機Ａは、ケーシング１内に、送風機１１と蒸発器２を設けた蒸発送風路１７と、送風機１２と凝縮器３を設けた凝縮送風路１８と、を備えている。ケーシング１には、吸気口７、給気口８、還気口９及び排気口１０を形成し、還気口９と給気口８を蒸発送風路１７にて連通連結し、吸気口７と排気口１０を凝縮送風路１８にて連通連結する。この給気口８に給気路５を、還気口９に還気路６を、排気口１０に排気路１４を、吸気口７に吸気路１５を、それぞれ接続する。給気路５と還気路６と吸気路１５にはそれぞれ風量調整用ダンパａ、ｂ、ｃ、ｄ、ｅを設けてダンパ機構Ｄを構成し、図示省略のコントローラなどにてダンパ機構Ｄを制御し、所定の風量割合に調整する。
【０００８】
冷媒循環回路Ｃは、蒸発器２、凝縮器３、圧縮機４、図示省略の受液器、膨張弁及び冷媒循環方向の切換弁等を配管接続して成り、蒸発器２及び凝縮器３の吸熱と放熱を切換自在に構成する。この空調機Ａでは、還気口９から取入れた空気を蒸発器２の流通冷媒で熱交換して給気口８から給気し、同時に吸気口７から取入れた空気で凝縮器３の流通冷媒を熱交換して吸熱又は放熱し排気口１０から排気する。凝縮器３と蒸発器２のフィンチューブ１９は低圧損の楕円管で構成する（図３参照）のが好ましいが円形管でもよい。この冷媒循環回路Ｃは、ケーシング１に対して取出・収納自在に構成する。例えば、ケーシング１内に着脱自在に取付けられるフレーム１３に、冷媒循環回路Ｃを固定して一体化し、ケーシング１の一面に開口部を形成し、この開口部に対して冷媒循環回路付フレーム１３を取出・収納自在に構成する。開口部には、着脱又は開閉自在な外装板を設ける。なお、前述以外の構成で冷媒循環回路Ｃを取出・収納自在に設けるも自由である。
【０００９】
次に運転例を説明する。低熱負荷の夜間では、ダンパｂ、ｄを開、ダンパａ、ｃ、ｅを閉にして空調機Ａと蓄熱空間Ｆの間でのみ空調空気を循環させて蓄熱する。高熱負荷の日中では、ダンパａ、ｃ、ｄを開、ダンパｂ、ｅを閉にして、蓄えた冷熱や温熱を蒸発器用空気に放出して熱負荷を下げつつ、空調機Ａと被空調空間Ｅの間で空調空気を循環させて空調し、熱負荷ピーク時には、さらにダンパｅを開いて蓄えた冷熱や温熱を蒸発器用空気と凝縮器用空気の両方に放出して最大限に熱負荷を下げつつ、空調機Ａと被空調空間Ｅの間で空調空気を循環させて空調する。このとき、被空調空間Ｅと蓄熱空間Ｆの空気量は外調機Ｂの給排気により調整する。このように空調空気の蓄熱空間Ｆと被空調空間Ｅへの給気割合と蒸発器用空気の蓄熱空間Ｆと被空調空間Ｅからの還気割合と蓄熱空間Ｆと屋外からの吸気割合とを調整して熱負荷に応じた運転を行うことができる。
【００１０】
なお、給気路５と還気路６と吸気路１５の構成の変更は自由で、例えば分岐ダクトを使わずにダクトを２本ずつ用いたり、また、ダンパａ〜ｅの構造、数量、位置の変更も自由である。蓄熱空間Ｆとしては、天井側空間のみならず床下側空間や壁側空間であってもよい。
【００１１】
【発明の効果】
請求項１の発明では、低熱負荷時に蓄えた冷熱や温熱を、熱負荷ピーク時に蒸発器用空気と凝縮器用空気の両方に放出して空調機を運転できるので、空調機の大容量化（大型化）を防止し高効率運転とコスト低減を図れる。冷媒循環回路を一体に設けたヒートポンプ式空調機なので、設置後の冷媒配管工事が不要となり施工が簡単で屋内設置も容易で、別個に熱源機などの付帯設備が不要で設備コストの低減を図れる。
請求項２の発明では、ケーシング全体を取り外すことなく冷媒循環回路のみをケーシングから取出して冷媒回収作業やメンテナンスを容易に行え、取付け収納にも手間がかからない。また、冷媒循環回路だけ交換することにより、リニューアル時のコストダウンも図れる。
請求項３の発明では、高風速で使用しても圧力損失が増加せずかつ熱交換能力も低下しないので小型の蒸発器と凝縮器を使用でき空調機をさらにコンパクト化できる。また、通常風速では圧力損失が減少して熱交換効率が向上するので小型の送風機を用いることができ騒音低減を図れる。
【図面の簡単な説明】
【図１】本発明の一実施例を示すシステム図である。
【図２】空調機の断面図である。
【図３】フィンチューブの断面図である。
【符号の説明】
１ ケーシング
２ 蒸発器
３ 凝縮器
４ 圧縮機
５ 給気路
６ 還気路
１４ 排気路
１５ 吸気路
１９ フィンチューブ
Ａ 空調機
Ｃ 冷媒循環回路
Ｄ ダンパ機構
Ｅ 被空調空間
Ｆ 蓄熱空間[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat pump heat storage air conditioning system.
[0002]
[Prior art]
For example, in indoor air conditioning in the summer, heat is stored in the frame during the night when the heat load is low, and in the daytime when the heat load is high, the cold heat stored in the frame is released to the circulating air for air conditioning for air conditioning. There is known a system for realizing the conversion.
[0003]
[Problems to be solved by the invention]
However, simply using the heat storage for the circulating air for air conditioning as described above may be difficult to cope with at the time of the peak heat load. To deal with this, it is necessary to increase the capacity of the air conditioner. Therefore, a large-sized and costly air conditioner is required. In addition, during a peak heat load, a relatively short period and a short period of time are required. Then, it aims at providing the heat pump air conditioning system which solves these problems.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a heat pump type air conditioner in which an evaporator, a condenser and a compressor constituting a refrigerant circulation circuit are integrally provided, a heat storage space formed in a building, and an air conditioning system. An air supply passage for sending air-conditioned air heat-exchanged by the evaporator from the heat pump air conditioner to a space; and a return air passage for sending evaporator air from the heat storage space and the air-conditioned space to the heat pump air conditioner. An exhaust path for sending air heat exchanged by the condenser from the heat pump type air conditioner to the outside, an intake path for sending condenser air from the heat storage space and the outside to the heat pump type air conditioner, A damper mechanism that can adjust a proportion of air supplied to the heat storage space and the space to be air-conditioned, a rate of return air from the heat storage space and the space to be air-conditioned for the evaporator air, and a rate of intake air from the heat storage space and the outdoors. , I was painting. Further, the refrigerant circulation circuit is configured to be able to be taken out and stored in the casing of the air conditioner. Further, the fin tubes of the evaporator and the condenser were constituted by elliptic tubes.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
1 and 2 show an embodiment of a heat pump heat storage air conditioning system according to the present invention. In this heat pump heat storage air conditioning system, an evaporator 2, a condenser 3, and a compressor 4 constituting a refrigerant circuit C are arranged. An air supply passage for sending conditioned air heat-exchanged by the evaporator 2 from the heat pump type air conditioner A to a heat pump type air conditioner A integrally provided, and a heat storage space F and a space to be air conditioned E formed in a building. 5, heat return space 6 for sending evaporator air from the heat storage space F and the space to be air-conditioned E to the heat pump air conditioner A, and heat exchange in the condenser 3 from the heat pump air conditioner A to the outdoors. An exhaust passage 14 for sending air; an intake passage 15 for sending condenser air from the heat storage space F and the outside to the heat pump air conditioner A; and a supply of the conditioned air to the heat storage space F and the air-conditioned space E. The air ratio and the steam And a, a damper mechanism D can freely adjust the intake rate from the outdoor and the thermal storage space F and return air proportion from the thermal storage space F and the target air-conditioned space E dexterity air. The solid and dotted outline arrows indicate the direction of air flow.
[0006]
The heat storage space F is a ceiling chamber, an underfloor chamber, or the like formed by a building frame such as a slab as a heat storage body and a ceiling wall. B is a heat pump type external conditioner. The outside air from the outside is adjusted in temperature and humidity by an evaporator and a humidifier to supply air to the air-conditioned space E and the heat storage space F at a predetermined rate, and to return air from the air-conditioned space E. Is recovered in a condenser and exhausted outdoors. The proportion of air supply to the air-conditioned space E and the heat storage space F is adjusted by the damper 16.
[0007]
The air conditioner A includes, in the casing 1, an evaporative air passage 17 provided with the blower 11 and the evaporator 2, and a condensed air passage 18 provided with the blower 12 and the condenser 3. The casing 1 is formed with an intake port 7, a supply port 8, a return port 9, and an exhaust port 10. The return port 9 and the supply port 8 are connected to each other through an evaporative air passage 17, and are connected to the intake port 7. The exhaust port 10 is connected and connected by a condensing air passage 18. The air supply port 5 is connected to the air supply path 5, the return air path 9 is connected to the return air path 6, the exhaust port 10 is connected to the exhaust path 14, and the intake port 7 is connected to the intake path 15. The air supply path 5, the return air path 6, and the intake path 15 are respectively provided with dampers a, b, c, d, and e for adjusting the air volume to form a damper mechanism D. The damper mechanism D is controlled by a controller (not shown). Control and adjust to a predetermined air volume ratio.
[0008]
The refrigerant circuit C is formed by connecting the evaporator 2, the condenser 3, the compressor 4, a liquid receiver (not shown), an expansion valve, a refrigerant circulation direction switching valve, and the like with piping. Heat absorption and heat radiation can be switched freely. In the air conditioner A, the air taken in from the return air port 9 exchanges heat with the refrigerant flowing through the evaporator 2 and is supplied from the air supply port 8, and at the same time, the air taken in from the intake port 7 flows through the refrigerant flowing through the condenser 3. Heat is exchanged to absorb heat or dissipate heat and exhausted from the exhaust port 10. The fin tubes 19 of the condenser 3 and the evaporator 2 are preferably formed of low pressure drop elliptical tubes (see FIG. 3), but may be circular tubes. The refrigerant circuit C is configured to be able to be taken out and stored in the casing 1. For example, the refrigerant circulation circuit C is fixed to and integrated with a frame 13 which is detachably mounted in the casing 1, an opening is formed on one surface of the casing 1, and a frame 13 with a refrigerant circulation circuit is formed on the opening. It is constructed so that it can be taken out and stored freely. The opening is provided with a detachable or openable / closable exterior plate. It is to be noted that the refrigerant circulation circuit C may be provided so as to be freely taken out and stored in a configuration other than that described above.
[0009]
Next, an operation example will be described. At night with a low heat load, the dampers b and d are opened and the dampers a, c and e are closed to circulate the conditioned air only between the air conditioner A and the heat storage space F to store heat. During the day when the heat load is high, the dampers a, c and d are opened and the dampers b and e are closed to release the stored cold or warm heat to the air for the evaporator, thereby reducing the heat load, and controlling the air conditioner A and the air conditioning. Air conditioning is circulated between the spaces E for air conditioning. During peak heat loads, the damper e is further opened to release the stored cold or warm heat to both the evaporator air and the condenser air to maximize the heat load. While lowering, air is circulated between the air conditioner A and the space to be air-conditioned E for air conditioning. At this time, the amount of air in the air-conditioned space E and the heat storage space F is adjusted by the supply and exhaust of the air conditioner B. In this manner, the supply ratio of the conditioned air to the heat storage space F and the conditioned space E, the return air ratio of the evaporator air from the heat storage space F and the conditioned space E, the heat storage space F, and the intake ratio from the outside are adjusted. As a result, the operation according to the heat load can be performed.
[0010]
The configuration of the air supply path 5, the return air path 6, and the intake path 15 may be freely changed. For example, two ducts may be used without using a branch duct, and the structure, quantity, and position of the dampers a to e. The change of is also free. The heat storage space F may be not only a ceiling space but also a floor space or a wall space.
[0011]
【The invention's effect】
According to the first aspect of the present invention, the air conditioner can be operated by releasing the cold or warm heat stored during the low heat load to both the air for the evaporator and the air for the condenser at the peak of the heat load. ) To prevent high efficiency operation and cost reduction. Since it is a heat pump type air conditioner with an integrated refrigerant circulation circuit, there is no need to install refrigerant piping after installation, so installation is easy, indoor installation is easy, and additional equipment such as a heat source unit is unnecessary, reducing equipment costs. .
According to the second aspect of the present invention, only the refrigerant circulation circuit is taken out of the casing without removing the entire casing, so that the refrigerant recovery operation and maintenance can be easily performed. Further, by replacing only the refrigerant circuit, the cost can be reduced at the time of renewal.
According to the third aspect of the present invention, even when used at a high wind speed, the pressure loss does not increase and the heat exchange capacity does not decrease, so that a small-sized evaporator and condenser can be used, and the air conditioner can be made more compact. At normal wind speeds, pressure loss is reduced and heat exchange efficiency is improved, so that a small blower can be used and noise can be reduced.
[Brief description of the drawings]
FIG. 1 is a system diagram showing one embodiment of the present invention.
FIG. 2 is a cross-sectional view of the air conditioner.
FIG. 3 is a sectional view of a fin tube.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Casing 2 Evaporator 3 Condenser 4 Compressor 5 Supply path 6 Return path 14 Exhaust path 15 Intake path 19 Fin tube A Air conditioner C Refrigerant circulation circuit D Damper mechanism E Air-conditioned space F Heat storage space
