JPS58158440A - Controlling method for conditioning air among a plurality of chambers - Google Patents
Controlling method for conditioning air among a plurality of chambersInfo
- Publication number
- JPS58158440A JPS58158440A JP57041559A JP4155982A JPS58158440A JP S58158440 A JPS58158440 A JP S58158440A JP 57041559 A JP57041559 A JP 57041559A JP 4155982 A JP4155982 A JP 4155982A JP S58158440 A JPS58158440 A JP S58158440A
- Authority
- JP
- Japan
- Prior art keywords
- air
- temperature
- room
- rooms
- main room
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、多室間における室内温＾微少とするための
空調空気の制御法に関し、％には室内負荷の異なる主室
と他室とを温度差の微少な好ましい室内条件に効率よく
保持するための空調空気の温度を制御する方法に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of controlling air-conditioned air to minimize the indoor temperature in multiple rooms, and the preferred method is to minimize the temperature difference between the main room and other rooms with different indoor loads. The present invention relates to a method of controlling the temperature of conditioned air to efficiently maintain indoor conditions.
例えば動物飼育室あるいは放射性物質取扱区域勢におい
ては病源曹や汚染物質が空気の気流によって隣接する他
の室やエリヤに拡散することを防止するために各室間の
気流の制御が行なわれる。この気流制御において特に重
要な問題となるのは、扉部の開閉に伴なう気流制御のア
ンバランス、逆流現象の発生ということである。For example, in animal breeding rooms or areas where radioactive materials are handled, airflow between rooms is controlled to prevent pathogens and contaminants from spreading to other adjacent rooms or areas. A particularly important problem in this airflow control is the imbalance of airflow control and the occurrence of backflow phenomena as the door opens and closes.
すなわち、扉部の開放に伴ない隣接する二室間の温度差
によシ諌扉部開口に中性帯が作、出され、鋏中性帝の上
下に気流の逆転現象が生ずることが知られている。従っ
て、気流の逆流を防止するためには、この扉部の開放に
よって生ずる中性帯を少なくとも扉部開口上端ま九は下
端まで引上げまたは引下けるに十分な空気量（余剰空気
）を付与して気流の逆転現象を生じないようにすればよ
いわけである。本発明者は、さきにこの中性帯移動に関
して各室の気流を制御する方法を提案した（％願昭５６
−２２７９５号−ところで、余剰空気の付与によって扉
部に生ずる中性帯を引き上げることも扉部における気流
の逆流を防ぐ有効な手段ではあるが、中性帯というのは
画室の温度差によって形成されるものであるから、もし
両室間の温度差がＯであれば中性帯は生じず、従って扉
部の開放に伴なう気流の逆転現象は生ずることがない。In other words, it is known that when the door opens, a neutral zone is created and exposed at the door opening due to the temperature difference between the two adjacent rooms, and a reversal phenomenon of airflow occurs above and below the neutral zone. It is being Therefore, in order to prevent the backflow of airflow, a sufficient amount of air (surplus air) must be provided to pull up or pull down the neutral band created by opening the door to at least the upper and lower ends of the door opening. All that is required is to prevent the airflow from reversing. The present inventor previously proposed a method for controlling the airflow in each chamber regarding the movement of the neutral zone (% Gansho 56
-No. 22795- By the way, raising the neutral band that forms at the door by adding excess air is an effective means of preventing the backflow of airflow at the door, but the neutral band is formed by the temperature difference in the compartment. Therefore, if the temperature difference between the two chambers is 0, no neutral zone will occur, and therefore, no reversal of airflow due to opening of the door will occur.
現実には、各室の室内負荷はそれぞれの室内のさまざま
な条件、例えば建物の外壁に面しているか否か、あるい
は室内に発生する熱量の相違等によって相違するもので
あるから、実際上それらの室内温度差をＯＫすることは
ほとんど不可能なことである。しかしながら、この温度
差に着目して各室の温度差をＯに向かって極〈小さいも
のに刺突気量は極く小さいものとすることができ、この
ことは扉のスムーズな開閉および風切音の減少等、大き
な余剰風量の付与に伴なう室内条件の改善および消費エ
ネルギーの減少を実現させる。In reality, the indoor load of each room differs depending on various conditions within each room, such as whether or not it faces the exterior wall of the building, or differences in the amount of heat generated indoors. It is almost impossible to accommodate such indoor temperature differences. However, by focusing on this temperature difference, it is possible to make the temperature difference between each room extremely small toward O, and the amount of piercing air can be made extremely small. This will reduce noise, improve indoor conditions by providing a large surplus air volume, and reduce energy consumption.
一方、複数の室における温度を制御することは従来から
も多方面で実施されているが、そのほとんどは空調器に
よる。冷風と温風の混合のみという単純な方法に軸って
いる。しかしながら、この方法による場合には混合損失
が生じ比較的大きいエネルギーを必要とする。また、従
来の温度制御は、負荷パターン別にゾーニングする制御
方法、二重ダクトによる個別もしくはグループ別制御方
法または二重ダクトによる個別可変風量制御方法等によ
って行なわれているのであるが、これらは比較的室内負
荷条件の似かよった室に対するものがほとんどで廊下や
前室という負荷条件が大きく相違するエリヤを含むこと
はほとんどなかった。On the other hand, controlling the temperature in a plurality of rooms has been carried out in many ways, most of which have been done using air conditioners. It relies on a simple method of just mixing cold and hot air. However, this method causes mixing loss and requires a relatively large amount of energy. In addition, conventional temperature control is performed by zoning control methods according to load patterns, individual or group control methods using double ducts, and individual variable air volume control methods using double ducts, but these methods are relatively ineffective. Most of the studies were for rooms with similar indoor load conditions, and rarely included areas such as hallways and vestibules, which have significantly different load conditions.
この発明は、室内負荷条件の大きく異なる、例えば建物
の外壁に面した主室と面さない他室勢において、温度差
の微少な室内条件に効率よく保持するための空調空気の
温度制御方法を提案するものである。また、この発明は
、消費エネルギーの少ない空調空気の温度制御方法であ
るとともに、例えばクリーンエリヤの確保に欠くことの
できない細菌の死滅速度を増大させる所定の相対湿度城
等の制御を可能にする温度制御方法を提案するものであ
る。This invention provides a method for controlling the temperature of conditioned air to efficiently maintain indoor conditions with small temperature differences between the main room facing the outer wall of a building and other rooms that do not face the building, where the indoor load conditions are significantly different. This is a proposal. In addition, the present invention provides a temperature control method for conditioned air that consumes less energy, and also enables the control of a predetermined relative humidity level that increases the killing rate of bacteria, which is essential for ensuring a clean area. This paper proposes a control method.
すなわち、この発明の要旨は、主室には、所定の室内温
湿度を維持する丸めの調和空気を空調器の温風と冷風と
を混合して送気するとともに、他室には、空調排気系と
全熱交換させた新鮮空気と前記空調器の冷風とを、前記
主室の所定の設定温度および所定の相対濃度域条件で再
熱量を最小とする原点温度を設定してこれに基づいて混
合し、該混合空気をその混合温度から前記所定の設定温
度を維持するために必要な温度まで再熱して送気するこ
とを特徴とするものである。以下実施例について具体的
に説明する。In other words, the gist of this invention is that rounded conditioned air that maintains a predetermined indoor temperature and humidity is sent to the main room by mixing hot air and cold air from an air conditioner, and air conditioning exhaust is sent to other rooms. The fresh air that has undergone total heat exchange with the system and the cold air from the air conditioner are set at an origin temperature that minimizes the amount of reheat under a predetermined set temperature of the main room and a predetermined relative concentration range condition, and based on this The mixed air is mixed, the mixed air is reheated from the mixing temperature to a temperature necessary to maintain the predetermined set temperature, and then the air is sent. Examples will be explained in detail below.
絵付の図面ｍ１図は、この発明方法の一例を示すフロー
シート図で、図中符号１ｏＩ／ｉ外壁１１に面する主室
たる動物飼育室、２ｏは骸動物飼育室に隣接する前室、
ＳＯは廊下、１δ、２５は扉である。前室２０および廊
下３ｏは外壁に面さないインテリアである。これらの各
室は、動物飼育室内の動物を病源菌勢の空気汚染から保
護し、かつ動物実勢が気流によって清浄なる廊下に拡散
しないようＫ、飼育室１ｏおよび廊下３０が＋２−ムｑ
（−ムｑｕｅｏｕｓ ）の陽圧に、前室２０が一２■ム
ｑの陽圧となるように圧力管理がなされている。従って
、隣接する飼育室１゜と前室２０との関係では気流は飼
育ｆｉｌｏから前室２０に向かうように、また前室２０
と廊下３０の関係では気流が廊下３０から前室２０へ向
かうよう圧制御される。このような前室２０の存在によ
って飼育室１０および廊下３０はいわゆるクリーンルー
ム（エリヤ）とすることが可能となる。１＋、これらの
各室間には各部１５゜２５の開放時における気流の逆流
現象を防ぐ丸めに扉開口部に生ずる中性帯を核部部開口
上端に引き上げまたは扉部開口下端に引き下げるに十分
な余剰空気が付与されており、かつ該余剰空気の付与条
件下において扉の閉鎖時における各室を所定の差圧に維
持するための手段として各室の境界壁１６．２６に抵抗
ある連通開口（ノズルオリフィス）ｌγ、２７が設けら
れている。符号１２，２２．３２は吹出口、２９は吸込
口をそれぞれ示す。なおこの気流制御の詳細は特願昭５
６−２２’７９５号明細書に詳記される。The illustrated drawing m1 is a flow sheet diagram showing an example of the method of the present invention, in which reference numeral 1oI/i indicates an animal rearing room which is the main room facing the outer wall 11, 2o a front room adjacent to the carcass rearing room,
SO is a hallway, 1δ and 25 are doors. The front room 20 and the hallway 3o are interiors that do not face external walls. Each of these rooms is designed to protect the animals in the animal breeding room from air contamination with pathogenic bacteria and to prevent the animal population from spreading into the clean hallway by air currents.
The pressure is controlled so that the front chamber 20 has a positive pressure of 12 mm while the positive pressure is 12 mm. Therefore, in the relationship between the adjacent rearing room 1° and the front room 20, the airflow is directed from the rearing filo to the front room 20, and from the front room 20
In the relationship between the hallway 30 and the hallway 30, the airflow is pressure-controlled so as to flow from the hallway 30 toward the front room 20. The existence of such a front room 20 allows the rearing room 10 and the hallway 30 to be used as a so-called clean room (area). 1+, there is sufficient space between each of these chambers to prevent the backflow phenomenon of airflow when each part is opened. A resistive communication opening is provided in the boundary wall 16, 26 of each chamber as a means for maintaining each chamber at a predetermined differential pressure when the door is closed under the condition of supplying the surplus air. (Nozzle orifice) lγ, 27 is provided. Reference numerals 12, 22, and 32 represent air outlets, and 29 represents a suction port, respectively. The details of this airflow control can be found in the patent application filed in 1973.
6-22'795.
この発明は、特にこのような気流制御の場合において、
余剰空気を最小をすることを目的として各室の温度差を
Ｏに近づけるために用いられる。Especially in the case of such airflow control, this invention
It is used to bring the temperature difference between each room close to 0 for the purpose of minimizing excess air.
この発明方法には、図示のように、冷風＠（Ｃ）および
温風１１１（Ｈ，Ｈ’）の二重ダクト方式により、各室
には個別の定風量ターンナルユニット５０．６０． フ
０を介して送気される。As shown in the figure, this invention method uses a double duct system for cold air @ (C) and hot air 111 (H, H'), and each room is provided with an individual constant air volume ternary unit 50, 60. Air is supplied through the air outlet.
まず、主室たる飼育室１０には、従来公知のように、空
Ｈｕ ４０の冷風（Ｃ）および温風但）を所定の室内温
Ｂ１度に対応するようにターミナルユニット５０によっ
て混合して送気される。符号１２はフィルター付吹出口
であり、５５はサーモスタットである。First, as is conventionally known, a terminal unit 50 mixes cold air (C) and warm air of empty Hu 40 to correspond to a predetermined room temperature B1 degree and sends it to the breeding room 10, which is the main room. It bothers me. Reference numeral 12 is an air outlet with a filter, and 55 is a thermostat.
一力、画室２０および廊下３０に対しては、空Ｘ排気系
と全熱交換器８０によって全熱交換された新鮮空気（Ｈ
′）と＃Ｉ記空調器４０の冷風（Ｃ）とを混合し、各タ
ーミナルユニット６０．ツＯのレピータ６１．フ１によ
って再熱して送気するようになっている。ただし、この
ときの熱交換空気（Ｈ′）と冷風（Ｃ）との混合は、上
記主室たる飼育室１０に設定され九温度および所定の相
対温度域条件で再熱量を最小とする露点温度を設定して
これに基づいて行なわれ、骸混合空気の温度から前記所
定の設定温度を維持するために必要な温ｆ１まで再熱さ
れる。露点温度の設定は夏季、冬季、中間期め三季に分
けて予め設定される０図中符号６２．マ２が露点検出器
である。For the room 20 and hallway 30, fresh air (H
') and the cold air (C) from the air conditioner 40 described in #I, and then air the air in each terminal unit 60. Tsuo repeater 61. Air is reheated by fan 1 and then supplied. However, at this time, the heat exchange air (H') and the cold air (C) are mixed at a dew point temperature set in the rearing room 10, which is the main room, to minimize the amount of reheat under the conditions of 9 temperatures and a predetermined relative temperature range. is set and based on this, and the temperature of the mixed air is reheated to the temperature f1 required to maintain the predetermined set temperature. The dew point temperature setting is preset for three seasons: summer, winter, and intermediate period. Ma2 is a dew point detector.
ま九符号６５．フロはレピータ６１．フ１を作動させる
サーモスタット、６６．７６は混合比を制御するコント
ロールモータである。なお、露点温度を設定して混合割
合を定め、これを再熱するというのは、混合空気の相対
ｍ度を制御できるからである。Maku code 65. The flow is repeater 61. Thermostat 66.76 is a control motor that controls the mixing ratio. The reason why the mixing ratio is determined by setting the dew point temperature and then reheated is that the relative m degrees of the mixed air can be controlled.
第２図は上記した前室２０および廊下３０の空調空気の
制御を示す空気線図である。同図は夏季を表わすもので
、主室１００室内条件は温度２３＠Ｃ１相対湿度５０１
Ｇに制御されている。FIG. 2 is an psychrometric diagram showing control of the conditioned air in the above-mentioned front room 20 and hallway 30. The figure represents summer, and the main room 100 indoor conditions are temperature 23 @ C1 relative humidity 501
It is controlled by G.
なお、空気の湿度は空気中に浮遊する細菌の消長と重ｌ
！な関係があり、相対湿［５０−程度が細菌の死滅速度
を増大させることが知られており、空気の清浄化、特に
動物飼育室等のクリーンエリアの制御にあっては関係す
る各室の１１度を４０〜６０−に制御する必要がある。In addition, the humidity of the air depends on the growth and weight of bacteria floating in the air.
! It is known that relative humidity [about 50 - It is necessary to control 11 degrees to 40-60 degrees.
第２図におｉで、点ムを外気の新鮮空気（ｔｏ ）と空
ｌｌＩ排気系（１，）とが全熱交換器８０によって熱交
換され圧空気（Ｈ′）の状態（ただし実施例の全熱交換
効率は約ツＯＬｓとする。）、点Ｂを冷却コイルをはな
れた冷風（Ｃ）の状態とすると、その混合空気の状態は
点ムと点Ｂを結ぶ直線上に表わされる。つまり点ムなる
空気をに１点Ｂなる空気を（１−ｋ）の割合で混合する
と直線ムＢをｋ ：（１−ｋ）Ｋ分かつ点がその混合空
気の状態である。同図において直線ムＢは温［２３″′
Ｃと交わる点が１つあるから混合比率のみによって温［
２３°Ｃの混合空気を得ることは可能である。At point i in FIG. 2, fresh air outside (to) and the empty exhaust system (1,) are heat exchanged by the total heat exchanger 80, resulting in pressurized air (H') (however, in the example (The total heat exchange efficiency is approximately TSOLs.), and if point B is in the state of cold air (C) separated from the cooling coil, the state of the mixed air is expressed on the straight line connecting point M and point B. In other words, when air at point B is mixed with air at point B at a ratio of (1-k), the straight line B is divided by k:(1-k)K, and the point is the state of the mixed air. In the same figure, the straight line B is at temperature [23″′
Since there is one point that intersects with C, the temperature [
It is possible to obtain mixed air at 23°C.
しかしながら、このときの相対湿度は約６５−で、設定
湿度域から外れる。However, the relative humidity at this time is about 65 -, which is out of the set humidity range.
そこで本発明では、設定温度（２３°Ｃ）および所定の
相対湿度域（４０〜−ｅｏ％）で再熱量を最も小さくす
ることができる露点温度を設定して、この露点温度を基
準として全熱交換空気（Ｉ（′）と冷風（Ｃ）とを混合
し、骸混合空気を再熱して所定の室内温度を維持するた
めの必要な温度の空気を得るのである。すなわち、同図
において所定のｉ１度（ｇ３＠ｃ）および相対湿度域（
４０〜６０−）で再熱量を最小とする露点温度は、温ｆ
２３＠ｅの垂直線と相対湿度６０−曲線の交点から水平
に移動した点りに求められるから、点りが設定される霧
点温度となる。そして該露点源ｆＤを基準として混合が
行なわれるとすると、直線ムＢとの交点Ｍが混合点とな
シ、混合空気Ｍはさらに所定の室内温度２３°Ｃを維持
するために必要な温度状１１鳶まで再熱されるのである
。Therefore, in the present invention, a dew point temperature that can minimize the amount of reheating is set at a set temperature (23°C) and a predetermined relative humidity range (40 to -eo%), and the total heat is The exchange air (I(')) and cold air (C) are mixed and the mixed air is reheated to obtain air at the temperature required to maintain a predetermined indoor temperature. i1 degree (g3@c) and relative humidity range (
The dew point temperature that minimizes the amount of reheating in the range 40 to 60-) is the temperature f
Since it is determined by the point moved horizontally from the intersection of the vertical line of 23@e and the relative humidity 60- curve, the point becomes the fog point temperature at which the point is set. If mixing is performed based on the dew point source fD, the intersection point M with the straight line B is the mixing point, and the mixed air M is further maintained at a temperature required to maintain a predetermined indoor temperature of 23°C. It is reheated up to 11 Tobi.
上述したようにこの発明方法によれば、主室への送気は
空調器の温風と冷風との混合空気によって行なわれるが
、主室以外の他室に対しては空調排気系と全熱交換した
新鮮空気を用いるので消費熱エネルギーが大幅に削減す
ることができる０本発明方法による消費エネルギーは、
実施例の前室および廊下を主室と同様の空調器の温風、
冷風を混合させた場合の約３分の１ですむ（ただし夏季
、全熱交換器の効率′１０−のとき、）
さらにこの発明方法のよ如重要な効果は、所定の室内条
件、特に相対湿度の制御が露点温度を基準にすることよ
）完全かつ容ＩｈＫ行なうことができ、特にクリーンエ
リヤの確保に欠くこ湿度域の実現が可能となる。もちろ
ん、各室の室内＆Ａ腹の制御も±０．１９Ｃ以下の範囲
で行なうことができ、室内の気流制御を行なう場合に必
要な余制空気量の付与も大きく減少することができる等
、動物飼育室、放射線物質取扱区域、バイオハザード対
策室環の室管理において、この発明は多大な効果を有す
ることができる。As mentioned above, according to the method of this invention, air is supplied to the main room by a mixture of hot air and cold air from the air conditioner, but air is supplied to other rooms other than the main room by the air conditioning exhaust system and the total heat. Since the exchanged fresh air is used, the thermal energy consumption can be significantly reduced.The energy consumption by the method of the present invention is as follows:
The front room and hallway of the example are heated by the same air conditioner as the main room,
The cost is about one-third that of mixing cold air (in the summer, when the efficiency of the total heat exchanger is '10-).Furthermore, the important effect of this invention method is that it depends on the predetermined indoor conditions, especially the relative By using the dew point temperature as a reference for humidity control, it is possible to completely and accurately control humidity, and in particular, it is possible to realize a humidity range that is essential for ensuring a clean area. Of course, the indoor & A belly of each room can also be controlled within a range of ±0.19C or less, and the amount of restrained air required to control indoor airflow can be greatly reduced, etc. This invention can have great effects in room management of breeding rooms, radiation material handling areas, and biohazard countermeasure room rings.
第１図はこの発明方法の一例を示すフローシート図、第
２因は混合、再熱状態を示す空気線図である。
１０・−・動物飼育基、 ２０・・・前 室、 ３
０・・・脚 下、 ４０・・・空調器、 ５０．６０．
γ０・−・定風量ターミナルユニット、 ６１．１１
・・・レヒータ、 ８０・・・全熱交換器。FIG. 1 is a flow sheet diagram showing an example of the method of this invention, and the second factor is an psychrometric diagram showing mixing and reheating conditions. 10...Animal breeding ground, 20...Anterior chamber, 3
0...Leg bottom, 40...Air conditioner, 50.60.
γ0 - Constant air volume terminal unit, 61.11
...Reheater, 80...Total heat exchanger.
Claims (1)
内条件に効率よく保持するための空調空気の温度制御方
法であって； 主室には、所定の室内温湿度を維持するための調和空気
を空調器の温風と冷風とを混合して送気するとともに、 他室には、空調排気系と全熱交換させ九新鮮空気と前記
空調器の冷風とを、前記主室の所定の設定温度および所
定の相対温度域条件で再熱量を最小とする露点温度を設
定してこれに基づいて混合し、該混合空気をその混合温
度から前記所定の設定温度を維持するために必要な温度
まで再熱して送気することを特徴とする多室間における
空調空気の制御法。 Ｚ 主室が動物飼育室で他室が該動物飼育室と直列に配
設された前室および廊下である特許請求の範囲第１項記
載の多室間における空調空気の制御法。[Claims] 1. A temperature control method for conditioned air for efficiently maintaining indoor conditions with a slight temperature difference between a main room and other rooms with different indoor loads; Conditioned air to maintain indoor temperature and humidity is sent by mixing hot air and cold air from the air conditioner, and to other rooms, fresh air and cold air from the air conditioner are sent through total heat exchange with the air conditioning exhaust system. are mixed based on a dew point temperature that minimizes the amount of reheat under a predetermined set temperature of the main chamber and a predetermined relative temperature range condition, and the mixed air is mixed from the mixing temperature to the predetermined set temperature. A method for controlling conditioned air between multiple rooms, which is characterized by reheating the air to the temperature required to maintain the temperature. Z. The method for controlling air-conditioned air between multiple rooms according to claim 1, wherein the main room is an animal breeding room, and the other rooms are a front room and a hallway arranged in series with the animal breeding room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57041559A JPS58158440A (en) | 1982-03-16 | 1982-03-16 | Controlling method for conditioning air among a plurality of chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57041559A JPS58158440A (en) | 1982-03-16 | 1982-03-16 | Controlling method for conditioning air among a plurality of chambers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58158440A true JPS58158440A (en) | 1983-09-20 |
Family
ID=12611784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57041559A Pending JPS58158440A (en) | 1982-03-16 | 1982-03-16 | Controlling method for conditioning air among a plurality of chambers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58158440A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377998A (en) * | 2020-11-04 | 2021-02-19 | 同济大学 | All-condition heat pump heat recovery type fresh air fan with multiple reheating modes |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49121342A (en) * | 1973-03-24 | 1974-11-20 | ||
| JPS50109549A (en) * | 1974-02-06 | 1975-08-28 |
-
1982
- 1982-03-16 JP JP57041559A patent/JPS58158440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49121342A (en) * | 1973-03-24 | 1974-11-20 | ||
| JPS50109549A (en) * | 1974-02-06 | 1975-08-28 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112377998A (en) * | 2020-11-04 | 2021-02-19 | 同济大学 | All-condition heat pump heat recovery type fresh air fan with multiple reheating modes |
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