JPH0544574B2 - - Google Patents
Info
- Publication number
- JPH0544574B2 JPH0544574B2 JP59190211A JP19021184A JPH0544574B2 JP H0544574 B2 JPH0544574 B2 JP H0544574B2 JP 59190211 A JP59190211 A JP 59190211A JP 19021184 A JP19021184 A JP 19021184A JP H0544574 B2 JPH0544574 B2 JP H0544574B2
- Authority
- JP
- Japan
- Prior art keywords
- outside air
- air
- refrigerant
- coil
- direct expansion
- 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.)
- Expired - Lifetime
Links
- 239000003507 refrigerant Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 22
- 230000002265 prevention Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 description 9
- 230000008014 freezing Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000001630 Pyrus pyrifolia var culta Nutrition 0.000 description 1
- 240000002609 Pyrus pyrifolia var. culta Species 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- 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
- F24F5/0007—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 cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/006—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass for preventing frost
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Central Air Conditioning (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Description
【発明の詳細な説明】
(イ) 発明の技術分野
この発明は、半導体等精密部品を製造する工場
やコンピユータ室に設備されて、冬期に空間内の
発熱負荷の処理にあたるパツケージにあつて、パ
ツケージ本体内に還気と外気を取り入れて、該部
においてその還気と外気を混合させ、次いで直膨
コイルで冷却するものの構造技術に関する。[Detailed Description of the Invention] (a) Technical Field of the Invention The present invention relates to a package that is installed in a factory that manufactures precision parts such as semiconductors or a computer room, and that handles the heat generation load in the space during the winter. This invention relates to a structural technology for a device that takes in return air and outside air into a main body, mixes the return air and outside air in that part, and then cools it with a direct expansion coil.
(ロ) 技術の背景
第３図は上記パツケージを示している。これで
は還気R.Aと外気O.Aを還気導入部ａと外気導入
部ｂからパツケージ本体ｃ内に取り入れ、それら
をパツケージ本体ｃ内において混合させ、次いで
直膨コイルｄを通過させて冷却させるが、実際に
は還気R.Aと外気O.は特に両者の温度差が大きい
場合パツケージ本体ｃ内において均一に混合され
ず、層状態で直膨コイルｄを通過するために、外
気温が−10℃〜−16℃にもなる北海道や山梨県の
甲府盆地、長野県の諏訪盆地等の寒冷地の工場等
に設備されるものでは凍害を受け易い。すなわ
ち、還気R.Aと外気O.Aが層状態で流れることか
ら、冷えた冷媒が流れる直膨コイルｄにあつては
デイフロストによる機能不能状態が生じ、また、
加湿噴霧装置ｅでは冷気が接して凍結が生ずる。
従つて、寒冷地の工場等に設備されるパツケージ
にあつては上記凍害が生じない対策が採られる。(b) Technical background Figure 3 shows the above package. In this method, return air RA and outside air OA are taken into the package body c from the return air introduction part a and the outside air introduction part b, mixed in the package body c, and then cooled by passing through the direct expansion coil d. In reality, return air RA and outside air O. are not mixed uniformly in the package body c, especially when the temperature difference between the two is large, and they pass through the direct expansion coil d in a layered state, so the outside air temperature ranges from -10℃ to Equipment installed in factories in cold regions such as Hokkaido, the Kofu Basin in Yamanashi Prefecture, and the Suwa Basin in Nagano Prefecture, where temperatures can reach -16°C, are susceptible to frost damage. That is, since the return air RA and the outside air OA flow in a layered state, the direct expansion coil d through which the cold refrigerant flows becomes inoperable due to day frost.
In the humidifying spray device e, freezing occurs due to contact with cold air.
Therefore, for packages installed in factories in cold regions, measures are taken to prevent the above-mentioned freezing damage.
なお、直膨コイルｄにて冷却された空気は加湿
噴霧装置ｅにおいて加湿されてその調和空気（S.
A）は導出部ｆから放出される。また、冷媒（一
般にはフロン）は第４図のサイクルにて流れ、直
膨コイルｄにおいて蒸発した後、圧縮機ｇにおい
て圧縮され、熱交換器（水冷熱交換器）ｈにおい
て熱交換（冷却）される。熱交換器ｈにおいて吸
収した熱はクーリングタワー（図示せず）に送ら
れて冷却される。 The air cooled by the direct expansion coil d is humidified by the humidifying spray device e, and the conditioned air (S.
A) is emitted from the derivation part f. In addition, the refrigerant (generally fluorocarbons) flows in the cycle shown in Figure 4, evaporates in the direct expansion coil d, is compressed in the compressor g, and undergoes heat exchange (cooling) in the heat exchanger (water-cooled heat exchanger) h. be done. The heat absorbed in the heat exchanger h is sent to a cooling tower (not shown) and cooled.
(ハ) 従来技術と問題点
凍害が生じない対策として、従来では、前記外
気導入部ｂに外気O.Aの影響を受けることのない
電気ヒータｉを設けて、これによつて外気導入部
ｂからパツケージ本体ｃ内に取り入れられる外気
O.Aを凍結が生じない温度に過熱するようにして
いる。例えば外気温が−16℃にある場合、パツケ
ージ本体ｃ内に導入する外気O.Aが＋５℃となる
ように加熱する。(c) Conventional technology and problems As a measure to prevent frost damage, conventionally, an electric heater i that is not affected by outside air OA is installed in the outside air introduction part b, and thereby the package is removed from the outside air introduction part b. Outside air taken into main body c
The OA is heated to a temperature that does not cause freezing. For example, when the outside temperature is -16°C, the outside air OA introduced into the package body c is heated to +5°C.
しかし、このように電気ビータｉによつて凍害
を防止する対策の場合、大容量の電気ヒータが
必要であるため、ランニングコスト（COP（成績
係数）＋基本料金）が高い、前記の理由によ
り、全体の電気容量が増大し、イニシヤルコスト
が高い、同じく前記の理由によつて電気ヒー
タのための設置スペースが必要となる等の欠点が
あつた。 However, in the case of measures to prevent frost damage using the electric beater i, a large-capacity electric heater is required, so the running cost (COP (coefficient of performance) + basic charge) is high, due to the above-mentioned reason. There were disadvantages such as an increase in the overall electric capacity, high initial cost, and the need for installation space for an electric heater for the same reason as mentioned above.
図中、ｊはブロア、ｋは受液器、ｌは膨張弁、
ｍは逆止弁、ｎは四方弁である。 In the figure, j is a blower, k is a liquid receiver, l is an expansion valve,
m is a check valve and n is a four-way valve.
(ニ) 発明の目的
そこでこの発明は、上記電気ヒータと同様に外
気の影響を受けることなくして取り入れ外気を凍
結することのない温度に加熱することができると
同時に、イニシヤルコスト及びランニングコスト
の低減が図れ、構造的に特別な設置スペースを要
さない構造を提供するものである。(iv) Purpose of the invention Therefore, the present invention is capable of heating the intake outside air to a temperature that does not freeze without being affected by the outside air, like the above-mentioned electric heater, and at the same time, it is possible to reduce the initial cost and running cost. The present invention provides a structure that can reduce the amount of electricity and does not require any special installation space.
(ホ) 発明の構成
この発明のパツケージでは上記目的を達成する
ため、冷媒回路の冷媒が直膨コイルを通過する前
段に、圧縮機からの冷媒が熱交換器を通過せずに
前記直膨コイルに向かうバイパス通路を設けて、
該バイパス通路に空冷コイルを設け、この空冷コ
イルを取り入れ外気が通過するようにパツケージ
本体の外気導入部を配置した。(E) Structure of the Invention In order to achieve the above object, the package of the present invention has a structure in which the refrigerant from the compressor does not pass through the direct expansion coil before the refrigerant in the refrigerant circuit passes through the direct expansion coil. A bypass passage leading to
An air cooling coil was provided in the bypass passage, and the outside air introducing portion of the package body was arranged so that the air cooling coil was taken in and outside air passed through.
(ヘ) 発明の実施例
以下、この発明を第１図及び第２図に基づき具
体的に説明する。(F) Embodiments of the Invention The present invention will be specifically described below with reference to FIGS. 1 and 2.
例示構造では、基本的な構成は従来と変わら
ず、冷媒回路１の冷媒が直膨コイル２を通過する
前段に、圧縮機３からの冷媒が熱交換器（水冷熱
交換器）４を通過せずに前記直膨コイル２に向か
うバイパス通路５を設けて、該バイパス通路５に
空冷コイル６を設け、この空冷コイル６を取り入
れ外気O.Aが通過するようにパツケージ本体７の
外気導入部８に配置している。冷媒を熱交換器４
に通過させる場合、主通路９の開閉弁１０，１１
を開とし、バイパス通路５の開閉弁１２，１３を
閉とする。また、冷媒を空冷コイル６に通過させ
る場合、バイパス通路５の開閉弁１２，１３を開
とし、主通路９の開閉弁１０，１１を閉とする。
このような開閉弁１０〜１３の開閉操作は、外気
導入部８に設置される外気温センサ１４からの信
号に基づき作動するコントローラ１５によつて自
動制御される。例えば外気温が凍結を生じさせる
温度（０℃以下）状態にあるとき、コントローラ
１５は開閉弁１２，１３を開き、凍結を生じさせ
ない温度状態にあるとき開閉弁１０，１１を開く
ように作動する。開閉弁１０〜１３の開閉操作は
マニユアルとすることもある。 In the illustrated structure, the basic configuration remains the same as before, and the refrigerant from the compressor 3 passes through a heat exchanger (water-cooled heat exchanger) 4 before the refrigerant in the refrigerant circuit 1 passes through the direct expansion coil 2. A bypass passage 5 leading to the direct expansion coil 2 is provided, an air cooling coil 6 is provided in the bypass passage 5, and the air cooling coil 6 is taken in and placed in the outside air introduction part 8 of the package body 7 so that outside air OA passes through. are doing. Refrigerant to heat exchanger 4
When passing through the main passage 9, the on-off valves 10, 11
is opened, and the on-off valves 12 and 13 of the bypass passage 5 are closed. Further, when the refrigerant is passed through the air cooling coil 6, the on-off valves 12 and 13 of the bypass passage 5 are opened, and the on-off valves 10 and 11 of the main passage 9 are closed.
Such opening/closing operations of the on-off valves 10 to 13 are automatically controlled by a controller 15 that operates based on a signal from an outside temperature sensor 14 installed in the outside air introduction section 8. For example, the controller 15 operates to open the on-off valves 12 and 13 when the outside temperature is at a temperature that causes freezing (below 0° C.), and opens the on-off valves 10 and 11 when the outside temperature is at a temperature that does not cause freezing. . The opening and closing operations of the on-off valves 10 to 13 may be performed manually.
このような構成にあるから、冷媒は直膨コイル
２で蒸発し、圧縮機３で圧縮された御は、前記開
閉弁１０〜１３の開閉状態によつて主通路９を流
れる場合（外気温が凍結を生じさせない状態）と
バイパス通路５を流れる場合（外気温が凍結を生
じさせる状態）があり、主通路９を流れると熱交
換器４にて熱交換（冷却）され、バイパス通路５
を流れる空冷コイル６にて冷却される。 With this configuration, the refrigerant evaporates in the direct expansion coil 2, and the refrigerant compressed in the compressor 3 flows through the main passage 9 depending on the open/close states of the on-off valves 10 to 13 (when the outside temperature is When flowing through the main passage 9, it is heat exchanged (cooled) by the heat exchanger 4, and when it flows through the bypass passage 5 (a state where the outside temperature causes freezing), it flows through the bypass passage 5.
The air is cooled by an air cooling coil 6 flowing through the air.
冷媒が主通路９を流れる場合、外気導入部８か
らパツケージ本体７内に取り入れられる外気O.A
は従来と同様にそのままの状態で取り入れられる
が、冷媒がバイパス通路５を流れる場合、外気
O.Aは空冷コイル６内を流れる高温の冷媒と熱交
換されて加熱される。従つて、パツケージ本体７
内には加熱された外気O.Aが取り入れられること
になり、仮にこの外気O.Aがパツケージ本体７内
において還気R.Aと層状態で流れたとしても直膨
コイル２や加湿噴霧装置１６が凍害を受けること
はない。空冷コイル６の熱交換時、高温の冷媒は
外気O.Aに熱を奪われて冷却する。仮に外気温が
−16℃にあるとき、空冷コイル６ではパツケージ
本体７内に流れる外気O.Aを＋５℃まで加熱させ
て凍害を来さぬようにする。また、パツケージ本
体７内に＋24℃の還気R.Aが取り入れられた場
合、直膨コイル２では＋16℃まで冷却する。な
お、空冷コイル６を＋16℃の外気O.Aが通過する
場合、空冷コイル６内には直膨コイル２において
高温化された冷媒が流れているため、空冷コイル
６は外気O.Aによる影響、すなわち凍害を受ける
ことはなく、確実に機能が発揮される。 When the refrigerant flows through the main passage 9, the outside air OA taken into the package body 7 from the outside air introduction part 8
is taken in as is, as in the past, but when the refrigerant flows through the bypass passage 5, outside air
The OA is heated by exchanging heat with the high temperature refrigerant flowing within the air cooling coil 6. Therefore, the package body 7
Heated outside air OA is taken into the package body 7, and even if this outside air OA flows in a layered state with the return air RA inside the package body 7, the direct expansion coil 2 and the humidifying spray device 16 will not be subject to frost damage. There isn't. During heat exchange in the air cooling coil 6, the high temperature refrigerant loses heat to the outside air OA and is cooled. If the outside temperature is -16°C, the air cooling coil 6 heats the outside air OA flowing into the package body 7 to +5°C to prevent freezing damage. Further, when +24°C return air RA is taken into the package body 7, the direct expansion coil 2 cools it to +16°C. Note that when outside air OA at +16°C passes through the air cooling coil 6, the refrigerant heated in the direct expansion coil 2 is flowing inside the air cooling coil 6, so the air cooling coil 6 is not affected by the outside air OA, that is, freezing damage. It will not be affected and will definitely function.
図中、１７は還気導入部、１８は調和空気（S.
A）の導出部、１９はブロア、２０は受液器、２
１は膨張弁、２２は逆止弁、２３は四方弁であ
る。 In the figure, 17 is the return air introduction part, 18 is the conditioned air (S.
A) outlet part, 19 is a blower, 20 is a liquid receiver, 2
1 is an expansion valve, 22 is a check valve, and 23 is a four-way valve.
(ト) 発明の効果
以上要するに、この発明に係る凍害対策仕様パ
ツケージは、パツケージ本体内に還気と外気を取
り入れて、該部においてその還気と外気を混合さ
せ、次いで直膨コイルで冷却するものにあつて、
冷媒回路の冷媒が直膨コイルを通過する前段に、
圧縮機からの冷媒が熱交換器を通過せずに前記直
膨コイルに向かうバイパス通路を設けて、該バイ
パス通路に空冷コイルを設け、この空冷コイルを
取り入れ外気が通過するようにパツケージ本体の
外気導入部を配置したものであるから、実施例で
述べたように外気温が凍結を生じさせる温度状態
にあるとき冷媒を前記バイパス通路に流すように
すると、直膨コイルにて加熱された高温の冷媒が
空冷コイル内を流れるようになるため、外気導入
部からパツケージ本体内に取り入れられる外気は
空冷コイルで熱交換されて加熱されることにな
る。従つて、直膨コイル及び加湿噴霧装置は凍害
を受けることがなくなり、この場合、自己の排熱
を利用した空冷コイルによる加熱であるために従
来の電気ヒータと比べてイニシヤルコスト及びラ
ンニングコストが著しく低減され、また、空冷コ
イルはパツケージ本体内に設置されるので電気ヒ
ータの如く外部に設置スペースが必要となること
はなく、これにより信頼性が高く、低廉にて実施
可能な凍害対策が望める。(G) Effects of the Invention In summary, the frost damage prevention specification package according to the present invention takes in return air and outside air into the package body, mixes the return air and outside air in that part, and then cools it with a direct expansion coil. When it comes to things,
Before the refrigerant in the refrigerant circuit passes through the direct expansion coil,
A bypass passage is provided in which the refrigerant from the compressor goes to the direct expansion coil without passing through the heat exchanger, an air cooling coil is provided in the bypass passage, and the air cooling coil is taken in and the outside air of the package body is cooled so that the outside air passes through. Since the introduction section is arranged, if the refrigerant is allowed to flow through the bypass passage when the outside temperature is at a temperature that causes freezing, as described in the example, the high temperature heated by the direct expansion coil will be removed. Since the refrigerant flows through the air cooling coil, the outside air taken into the package body from the outside air introduction section is heated by heat exchange with the air cooling coil. Therefore, the direct expansion coil and the humidifying spray device are not subject to frost damage, and in this case, the initial cost and running cost are lower than that of conventional electric heaters because the heating is performed by an air-cooled coil that uses its own exhaust heat. In addition, since the air cooling coil is installed inside the package body, it does not require external installation space like electric heaters, making it a highly reliable and inexpensive solution to frost damage. .
第１図はこの発明の実施例の全体構成図、第２
図は同冷媒回路図、第３図は従来の凍害対策仕様
パツケージの全体構成図、第４図は同冷媒回路図
である。
図において、１は冷媒回路、２は直膨コイル、
３は圧縮機、４は熱交換器、５はバイパス通路、
６は空冷コイル、７はパツケージ本体、８は外気
導入部、O.Aは外気、R.Aは還気である。
Fig. 1 is an overall configuration diagram of an embodiment of the present invention;
The figure is a circuit diagram of the same refrigerant, FIG. 3 is an overall configuration diagram of a conventional package with antifreeze protection specifications, and FIG. 4 is a circuit diagram of the same refrigerant. In the figure, 1 is a refrigerant circuit, 2 is a direct expansion coil,
3 is a compressor, 4 is a heat exchanger, 5 is a bypass passage,
6 is an air cooling coil, 7 is a package body, 8 is an outside air introduction part, OA is outside air, and RA is return air.
Claims (1)
て、該部においてその還気と外気を混合させ、次
いで直膨コイルで冷却するものにあつて、冷媒回
路の冷媒が直膨コイルを通過する前段に、圧縮機
からの冷媒が熱交換器を通過せずに前記直膨コイ
ルに向かうバイパス通路を設けて、該バイパス通
路に空冷コイルを設け、この空冷コイルを取り入
れ外気が通過するようにパツケージ本体の外気導
入部を配置したことを特徴とする凍害対策仕様パ
ツケージ。1 In cases where return air and outside air are taken into the package body, the return air and outside air are mixed in that part, and then cooled by a direct expansion coil, the refrigerant in the refrigerant circuit passes through the direct expansion coil. , a bypass passage is provided in which the refrigerant from the compressor goes to the direct expansion coil without passing through the heat exchanger, an air cooling coil is provided in the bypass passage, and the package body is arranged so that the air cooling coil is taken in and outside air passes through. A frost damage prevention package featuring an outside air introduction section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59190211A JPS6170329A (en) | 1984-09-11 | 1984-09-11 | Package provided with specification of frost damage countermeasure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59190211A JPS6170329A (en) | 1984-09-11 | 1984-09-11 | Package provided with specification of frost damage countermeasure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6170329A JPS6170329A (en) | 1986-04-11 |
| JPH0544574B2 true JPH0544574B2 (en) | 1993-07-06 |
Family
ID=16254312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59190211A Granted JPS6170329A (en) | 1984-09-11 | 1984-09-11 | Package provided with specification of frost damage countermeasure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6170329A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123193B (en) * | 2013-03-26 | 2014-10-29 | 长沙鹞翔科技有限公司 | Defrosting device for closed type heat source tower |
| CN105485958A (en) * | 2016-01-06 | 2016-04-13 | 王言明 | Defrosting-free air cooling and water cooling all-in-one machine air source heat pump |
-
1984
- 1984-09-11 JP JP59190211A patent/JPS6170329A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6170329A (en) | 1986-04-11 |
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