JPH0484038A - Apparatus for air conditioning and method of operation - Google Patents
Apparatus for air conditioning and method of operationInfo
- Publication number
- JPH0484038A JPH0484038A JP2196221A JP19622190A JPH0484038A JP H0484038 A JPH0484038 A JP H0484038A JP 2196221 A JP2196221 A JP 2196221A JP 19622190 A JP19622190 A JP 19622190A JP H0484038 A JPH0484038 A JP H0484038A
- Authority
- JP
- Japan
- Prior art keywords
- water
- temperature
- air
- cold
- flow
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000004378 air conditioning Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000004891 communication Methods 0.000 claims description 10
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000000725 suspension Substances 0.000 abstract 2
- 238000001816 cooling Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Landscapes
- Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、空気調和装置に係り、特に、冷房と暖房の切
替えが容易な空気調和装置とその運転方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner, and particularly to an air conditioner that allows easy switching between cooling and heating, and a method of operating the same.
最近のビル空気調和では、区画によって冷房と暖房が逆
であったり（南向き、北向きあるいはＯＡ機器の有無に
よる） また、同一区画であっても、時間帯により冷房
と暖房が逆になったりする運転が求約られている。In recent building air conditioning systems, cooling and heating may be reversed depending on the compartment (depending on whether it faces south, north, or whether OA equipment is installed), or even in the same compartment, cooling and heating may be reversed depending on the time of day. driving is required.
このような用途には、従来、空気調和装置に空気熱交換
器を２個設け、冷水用と温水用として用いている（第４
図） この場合、空気熱交換器が２個あることから、空
気の流動抵抗が増え、搬送動力が増大する。また、空気
調和装置の寸法も大きく、高価になる。For such applications, conventionally, an air conditioner is equipped with two air heat exchangers, one for cold water and one for hot water.
(Figure) In this case, since there are two air heat exchangers, the flow resistance of the air increases and the conveying power increases. Moreover, the size of the air conditioner is large and expensive.
前記のような問題に対処するため、空気熱交換器を、冷
水用と温水用とに共用とすると、空気熱交換器に残って
いる水が負荷になる欠点がある。すなわち、冷水から温
水に切替える場合残っている冷水が温水側に入ることに
なり、温水負荷となる。また、温水から冷水に切替える
場合は、残っている温水が冷水側に入り、冷水負荷とな
る。In order to deal with the above-mentioned problems, if the air heat exchanger is shared for cold water and hot water, there is a drawback that the water remaining in the air heat exchanger becomes a load. That is, when switching from cold water to hot water, the remaining cold water enters the hot water side, creating a hot water load. Furthermore, when switching from hot water to cold water, the remaining hot water enters the cold water side and becomes a cold water load.
そこで、本発明では、上記のような欠点のない、空気熱
交換器を冷水用と温水用とに共用して用い、切替の際の
熱損失を少なくした空気調和装置とその運転方法を提供
することを目的とする。Therefore, the present invention provides an air conditioner that does not have the above-mentioned drawbacks and uses an air heat exchanger for both cold water and hot water to reduce heat loss during switching, and an operating method thereof. The purpose is to
上記目的を達成するために、本発明では、冷水又は温水
を冷温水切替手段を介して、選択的に、空気熱交換器に
出入させて空気温度を調整する空気調和装置において、
冷温水切替手段に冷水流動モード、温水流動モード及び
流動停止モードの定められたモードで切替えるための制
御機構を設けたことを特徴とする空気調和装置としたも
のである。In order to achieve the above object, the present invention provides an air conditioner that adjusts air temperature by selectively causing cold water or hot water to enter and exit an air heat exchanger via a cold/hot water switching means.
The air conditioner is characterized in that the cold/hot water switching means is provided with a control mechanism for switching between a cold water flow mode, a hot water flow mode, and a flow stop mode.
そして、前記空気調和装置には、空気熱交換器の水の入
口側と出口側とに、両方を連結する弁あるいは循環装置
を有する連絡路を設けるのがよい。It is preferable that the air conditioner is provided with a communication path having a valve or a circulation device for connecting the water inlet side and the outlet side of the air heat exchanger.
また、本発明では、前記空気調和装置の運転において、
流動モードを切替える際、まず空気温度信号により流動
停止モードとし、その後、流動許可条件を満足してから
停止モード前とは、逆の流動モードに切替えることを特
徴とする空気調和装置の運転方法としたものである。Further, in the present invention, in the operation of the air conditioner,
A method of operating an air conditioner, characterized in that when switching the flow mode, the flow mode is first set to a flow stop mode based on an air temperature signal, and then, after a flow permission condition is satisfied, the flow mode is switched to a flow mode opposite to that before the stop mode. This is what I did.
上記の空気調和装置の運転方法において、流動許可条件
が、空気熱交換器部の水温（冷水又は温水温度）であり
、冷水流動モードから温水流動モードへの切替の際は、
水温が所定の温度まで上昇してから切替、また、温水流
動モードから冷水流動モードへの切替の際は、水温が所
定の温度まで下降してから切替えるように操作する。In the above method of operating an air conditioner, the flow permission condition is the water temperature (chilled water or hot water temperature) in the air heat exchanger section, and when switching from cold water flow mode to hot water flow mode,
Switching is performed after the water temperature rises to a predetermined temperature, and when switching from hot water flow mode to cold water flow mode, the switch is performed after the water temperature has fallen to a predetermined temperature.
また、流動許可条件が、所定の時間の経過であるときは
、あらかじめ定められた時間が経過したら切替えるよう
に操作するのがよい。Further, when the flow permission condition is that a predetermined time has elapsed, it is preferable to perform an operation to switch the flow after a predetermined time has elapsed.
そして、空気熱交換器の水の入口側と出口側とを連結す
る連絡路を有する場合は、流動停止モード時に、該連絡
路の弁を開とするか、あるいは循環装置を作動させるの
がよい。If the air heat exchanger has a communication path connecting the water inlet and outlet sides, it is preferable to open the valve of the communication path or operate a circulation device during the flow stop mode. .
通常空気温度又は室温を検出して、空気熱交換器への冷
温水の流量を調節して、空気温度を制御している。設定
温度からのずれが所定値あると、まず、冷温水切替装置
により、冷温水の供給をとめて、空気熱交換器の水と空
気の熱交換をおこなう。水温が空気温度近くなったこと
を検出し、（又は、所定の時間運転して空気温度近くま
で変化させ）、切替装置を逆の流動モードにする。ただ
し、停止している間に、空気温度が変化してもとに戻す
必要がある場合はもとに戻して差し仕えない。The air temperature is usually controlled by detecting the air temperature or room temperature and adjusting the flow rate of cold and hot water to the air heat exchanger. When the temperature deviates from the set temperature by a predetermined value, first, the cold/hot water switching device stops the supply of cold/hot water, and heat exchange is performed between the water and air in the air heat exchanger. It detects that the water temperature is close to the air temperature (or operates for a predetermined period of time to change it to close to the air temperature), and switches the switching device to the opposite flow mode. However, if the air temperature changes while it is stopped and it is necessary to return it to its original state, there is no problem in returning it to its original state.
このように、切替の際、−時、冷水または温水の供給を
止め、空気熱交換器に残っている水を、空気の温度近く
まで熱回収を行う。この熱交換時間を置くことにより、
頻繁な冷暖切替も防ぐことができる。In this way, at the time of switching, the supply of cold water or hot water is stopped, and the water remaining in the air heat exchanger is heat-recovered to a temperature close to that of the air. By allowing this heat exchange time,
Frequent switching between heating and cooling can also be prevented.
また、冷温水切替装置と空気熱交換器とのあいだの配管
が長く、配管内水量が多い場合などには、空気熱交換器
入口につながる管と、出口につながる管との間に、弁を
有する連絡管を設け、冷温水供給を停止している間、弁
を開として、空気熱交換器を含む配管を閉ループとし、
自然対流による循環をさせて、配管内水温を空気温度に
近ずけることができる。配管内温度を確実に変化させる
には、前述の連絡管部に循環ポンプを設け、冷温水供給
停止時に強制循環をさせてもよい。In addition, if the piping between the cold/hot water switching device and the air heat exchanger is long and the amount of water in the piping is large, install a valve between the pipe leading to the air heat exchanger inlet and the pipe leading to the outlet. A connecting pipe is provided, and while the cold and hot water supply is stopped, the valve is opened to close the pipe including the air heat exchanger,
Circulation by natural convection allows the water temperature in the pipes to approach the air temperature. In order to reliably change the temperature inside the pipe, a circulation pump may be provided in the above-mentioned connecting pipe section to perform forced circulation when the supply of cold and hot water is stopped.
以下、本発明を図面により具体的に説明するが、本発明
はこれに限定されるものではない。Hereinafter, the present invention will be specifically explained with reference to the drawings, but the present invention is not limited thereto.
実施例１ 第１図に、本発明の空気調和装置の概略構成図を示す。Example 1 FIG. 1 shows a schematic configuration diagram of an air conditioner according to the present invention.
第１図において、１は空気調和機の本体部、２は空気熱
交換器、３はファン、４はフィルタ５は制御装置、６．
６′は温度測定器、７〜１０は弁である。In FIG. 1, 1 is the main body of the air conditioner, 2 is an air heat exchanger, 3 is a fan, 4 is a filter 5 is a control device, 6.
6' is a temperature measuring device, and 7 to 10 are valves.
このような空気調和装置において、温水流動モードの場
合は、温水が温水供給配管１１から管１２を通り、三方
弁８により管１３から空気熱交換器２に導入される。そ
して、フィルター４を通って入る空気を昇温しで、温水
は管１４から三方弁９を通り、管１５から温水戻り配管
１６に到る。一方昇温された空気はファン３により室内
に送出されて、室内温度を上昇させる。In such an air conditioner, in the hot water flow mode, hot water passes from the hot water supply pipe 11 through the pipe 12 and is introduced into the air heat exchanger 2 from the pipe 13 by the three-way valve 8. Then, the temperature of the air entering through the filter 4 is raised, and the hot water passes through the three-way valve 9 from the pipe 14 and reaches the hot water return pipe 16 from the pipe 15. On the other hand, the heated air is sent indoors by the fan 3, raising the indoor temperature.
このような運転において、温度測定器６で温度を検知し
、予かじめ定狛られた温度になるように制御装置５で弁
７を制御して、温水量を調整している。そして、温度上
昇が激しくこのような制御では温度調整ができなくなっ
た場合は、制御装置５からの指令により、温水流動モー
ドから流動停止モードに切替わる。In such an operation, the temperature is detected by the temperature measuring device 6, and the control device 5 controls the valve 7 to adjust the amount of hot water so that the temperature is maintained at a predetermined value. If the temperature rises so sharply that it becomes impossible to adjust the temperature using this type of control, the hot water flow mode is switched to the flow stop mode in response to a command from the control device 5.
流動停止モードでは、三方弁８．９が、切替り、第２図
の断面図に示される鎖線のように連通を停止させる。そ
して、弁１０を開とすることにより、熱交換器２内の温
水は管１４、管２〕、管１３を通り循環し、熱交換器を
通る空気により冷却されて室温近くまで下がる。循環す
る温水の温度を温度測定器６′で測定し、室温近くまで
下がった段階で、制御装置５の指令により、流動停止モ
ードから冷水流動モードに切替える。In the stop flow mode, the three-way valve 8.9 switches to stop communication as shown in phantom in the cross-sectional view of FIG. Then, by opening the valve 10, the hot water in the heat exchanger 2 circulates through the pipes 14, 2] and 13, and is cooled down to near room temperature by the air passing through the heat exchanger. The temperature of the circulating hot water is measured by a temperature measuring device 6', and when the temperature has dropped to near room temperature, the flow stop mode is switched to the cold water flow mode in response to a command from the control device 5.
冷水流動モードでは、三方弁８．９は、冷水通路に切替
わり、冷水が、冷水供給配管１７から管１８、三方弁８
、管１３を通り、空気熱交換器２内に入り、フィルター
４からの空気を冷却する。そして冷水は管１４、三方弁
９、管１９を通り、冷水戻り配管２０に到る。一方、冷
却された空気は、ファン３により室内に循環されて室内
温度を冷やす。In the cold water flow mode, the three-way valve 8.9 switches to the cold water passage and the cold water flows from the cold water supply pipe 17 to the pipe 18 to the three-way valve 8.
, through tubes 13 into the air heat exchanger 2 to cool the air from the filter 4. The cold water then passes through the pipe 14, the three-way valve 9, and the pipe 19, and reaches the cold water return pipe 20. On the other hand, the cooled air is circulated indoors by the fan 3 to cool the room temperature.
このように運転することにより、空気熱交換器を温水、
冷水併用としても、熱効率よく運転することができる。By operating in this way, the air heat exchanger can be used to
Even when used in combination with cold water, it can be operated with good thermal efficiency.
上記において、流動停止モードにおいて、連絡路２１に
は弁１０を設けているが、この連絡路２１には循環ポン
プ等の循環装置を設けて強制循環させてもよい。また、
連絡路は、管２１に代えて、第３図に部分断面図として
示しているように、切替装置を三方弁から四方弁として
、この切替によって、弁１０の役割を兼ねた構成とする
ことができる。In the above description, in the flow stop mode, the communication path 21 is provided with the valve 10, but this communication path 21 may be provided with a circulation device such as a circulation pump for forced circulation. Also,
Instead of the pipe 21, the switching device can be changed from a three-way valve to a four-way valve, as shown in a partial cross-sectional view in FIG. can.
本発明によれば、冷温水の切替に際して、流動停止モー
ドを設けたことにより、空気熱交換器内の水温を室温近
くまで、冷却あるいは加温でき、温水から冷水あるいは
冷水から温水に直接切替えるのに比べて、熱損失が少な
くてすみ、熱効率がよい運転が可能となる。According to the present invention, by providing a flow stop mode when switching cold and hot water, the water temperature in the air heat exchanger can be cooled or heated to near room temperature, and it is possible to directly switch from hot water to cold water or from cold water to hot water. Compared to , heat loss is reduced and operation with high thermal efficiency is possible.
第１図は、本発明の空気調和装置の概略構成図、第２図
は本発明に用いる三方弁の断面図、第３図は、本発明に
用いる四方弁を用いた連絡路の部分断面図、第４図は、
従来の空気調和装置の概略断面図である。Fig. 1 is a schematic configuration diagram of an air conditioner of the present invention, Fig. 2 is a cross-sectional view of a three-way valve used in the present invention, and Fig. 3 is a partial cross-sectional view of a communication path using a four-way valve used in the present invention. , Figure 4 is
FIG. 1 is a schematic cross-sectional view of a conventional air conditioner.
Claims (1)
、空気熱交換器に出入させて空気温度を調整する空気調
和装置において、冷温水切替手段に冷水流動モード、温
水流動モード及び流動停止モードの定められモードで切
替えるための制御機構を設けたことを特徴とする空気調
和装置。 ２、空気熱交換器への水の入口側と出口側とを連結する
弁を有する連絡路を設けたことを特徴とする請求項１記
載の空気調和装置。 ３、空気熱交換器への水の入口側と出口側とを連結する
循環装置を有する連絡路を設けたことを特徴とする請求
項１記載の空気調和装置。 ４、請求項１、２又は３記載の空気調和装置の運転にお
いて、流動モードを切替える際、まず空気温度信号によ
り流動停止モードとし、その後、流動許可条件を満足し
てから停止モード前とは、逆の流動モードに切替えるこ
とを特徴とする空気調和装置の運転方法。 ５、流動許可条件が、空気熱交換器部の水温であり、冷
水流動モードから温水流動モードへの切替の際は、水温
が所定の温度まで上昇してから切替、また、温水流動モ
ードから冷水流動モードへの切替の際は、水温が所定の
温度まで下降してから切替えることを特徴とする請求項
４記載の空気調和装置の運転方法。 ６、流動許可条件が、所定の時間の経過であることを特
徴とする請求項４記載の空気調和装置の運転方法。 ７、流動停止モード時に、空気熱交換器の水の入口側と
出口側とを連結する連絡路の弁を開にするか、循環装置
を作動させることを特徴とする空気調和装置の運転方法
。[Claims] 1. In an air conditioner that adjusts the air temperature by selectively sending cold water or hot water into and out of an air heat exchanger via a cold/hot water switching means, the cold/hot water switching means is set to a cold water flow mode. An air conditioner comprising: a control mechanism for switching between a hot water flow mode and a flow stop mode. 2. The air conditioner according to claim 1, further comprising a communication path having a valve that connects the inlet side and the outlet side of water to the air heat exchanger. 3. The air conditioner according to claim 1, further comprising a communication path having a circulation device that connects the inlet side and the outlet side of water to the air heat exchanger. 4. In the operation of the air conditioner according to claim 1, 2 or 3, when switching the flow mode, first the flow stop mode is set according to the air temperature signal, and then, after the flow permission condition is satisfied, the flow mode is changed to before the stop mode. A method of operating an air conditioner, characterized by switching to a reverse flow mode. 5. The flow permission condition is the water temperature in the air heat exchanger section, and when switching from cold water flow mode to hot water flow mode, the water temperature must rise to a predetermined temperature before switching, and when switching from hot water flow mode to cold water flow mode. 5. The method of operating an air conditioner according to claim 4, wherein the switching to the flow mode is performed after the water temperature has decreased to a predetermined temperature. 6. The method of operating an air conditioner according to claim 4, wherein the flow permission condition is the passage of a predetermined time. 7. A method of operating an air conditioner, which comprises opening a valve in a communication path connecting the water inlet side and outlet side of the air heat exchanger or operating a circulation device during the flow stop mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196221A JP2892114B2 (en) | 1990-07-26 | 1990-07-26 | Air conditioner and its operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2196221A JP2892114B2 (en) | 1990-07-26 | 1990-07-26 | Air conditioner and its operation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0484038A true JPH0484038A (en) | 1992-03-17 |
| JP2892114B2 JP2892114B2 (en) | 1999-05-17 |
Family
ID=16354217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2196221A Expired - Lifetime JP2892114B2 (en) | 1990-07-26 | 1990-07-26 | Air conditioner and its operation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2892114B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBS20080168A1 (en) * | 2008-09-09 | 2010-03-10 | Simone Costanzo | MANIFOLD / DIVERTER FOR FAN COILS WITH TWO AND FOUR TUBES |
| GB2573184A (en) * | 2018-07-10 | 2019-10-30 | Easyairconditioning Ltd | Air conditioning system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692052A (en) * | 2011-03-21 | 2012-09-26 | 广州科力新能源有限公司 | Cold and hot water type precise air conditioning system |
-
1990
- 1990-07-26 JP JP2196221A patent/JP2892114B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITBS20080168A1 (en) * | 2008-09-09 | 2010-03-10 | Simone Costanzo | MANIFOLD / DIVERTER FOR FAN COILS WITH TWO AND FOUR TUBES |
| GB2573184A (en) * | 2018-07-10 | 2019-10-30 | Easyairconditioning Ltd | Air conditioning system |
| GB2573184B (en) * | 2018-07-10 | 2020-07-29 | Easyairconditioning Ltd | Air conditioning system |
| US11732920B2 (en) | 2018-07-10 | 2023-08-22 | Easyairconditioning Group Limited | Air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2892114B2 (en) | 1999-05-17 |
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