JPS63271070A - Air conditioner - Google Patents
Air conditionerInfo
- Publication number
- JPS63271070A JPS63271070A JP10427887A JP10427887A JPS63271070A JP S63271070 A JPS63271070 A JP S63271070A JP 10427887 A JP10427887 A JP 10427887A JP 10427887 A JP10427887 A JP 10427887A JP S63271070 A JPS63271070 A JP S63271070A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- pressure
- indoor
- air
- valve
- 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
- 230000005494 condensation Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 239000003507 refrigerant Substances 0.000 description 19
- 238000010438 heat treatment Methods 0.000 description 16
- 238000001816 cooling Methods 0.000 description 15
- 238000007791 dehumidification Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は外気導入を行う空気調和機の冷房・暖房サイク
ルに係り、時に直置の高い雰囲気において室内空気温度
を下げずに除湿運転を行う。また暖房運転時の暖房能力
低下防止に好適な空気調和機に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the cooling/heating cycle of an air conditioner that introduces outside air, and sometimes performs dehumidification operation in a high atmosphere without lowering the indoor air temperature. . The present invention also relates to an air conditioner suitable for preventing a decrease in heating capacity during heating operation.
外気導入による空冷ヒートポンプ式空調機は、中間期の
冷房運転、暖房運転において、暖房運転時の吐出圧力の
低下防止及び中間期冷房運転時の室内熱交換器への看絹
及び快適性に対して配慮されていなかった。なお、この
種の装置として関連するものには例えば、特開昭５９−
１５７５２号、特開昭５９−１０９７３４号等が挙げら
れる。Air-cooled heat pump air conditioners that introduce outside air are designed to prevent a drop in discharge pressure during cooling and heating operations during intermediate periods of cooling and heating operations, as well as to protect the indoor heat exchanger and provide comfort during intermediate cooling operations. It wasn't taken into consideration. Incidentally, related devices of this type include, for example, Japanese Patent Application Laid-open No.
No. 15752, JP-A-59-109734, and the like.
上記従来技術の、外気導入による空冷ヒートポンプ式空
調機は、中間期の冷房運転及び暖房運転について配慮さ
れておらず、中間期冷房運転では湿度が尚く気温が夏期
より低くて顕熱負荷が小さいため、吹出し風量を下げて
冷房運転を行うと除湿はするが、室内窒気度も下がり又
能力も不足し、暖房運転においては吐出圧力が低下し能
力不足となる問題があった。The above conventional air-cooled heat pump air conditioner that introduces outside air does not take into account cooling and heating operations during the mid-season, and during cooling operation during the mid-season, the humidity is still high and the temperature is lower than in summer, resulting in a small sensible heat load. Therefore, when cooling operation is performed with a lower blowout air volume, dehumidification is achieved, but the nitrogen level in the room also decreases and the capacity is insufficient, and in heating operation, the discharge pressure decreases and the capacity is insufficient.
本発明の目的は、暖房運転時の吐出圧力低下を防止する
他に、従来の除湿機の機能である除湿量を減少させるこ
となしに顕熱冷却能力音生さくする、即ち室内空気温度
を下げずに除湿を行う空調機を提供することにある。In addition to preventing a drop in discharge pressure during heating operation, the purpose of the present invention is to increase sensible heat cooling capacity without reducing the amount of dehumidification, which is the function of conventional dehumidifiers, that is, to lower indoor air temperature. An object of the present invention is to provide an air conditioner that dehumidifies without dehumidification.
上記目的は、従来の室内熱交換器の後部に再熱器を設け
ることによって、除湿運転時には室内熱交換器で冷却除
湿した空気を再熱器で再加熱し、顕熱冷却能力を小さく
することにより達成される（これは中間期の冷房運転も
可能となる）。また暖房運転時の吐出圧力低下防止につ
いては、室内熱交換器の出口側に凝縮圧力調整弁と室内
熱交換器の入口と出口間に減圧装置を介してバイパス配
管を設けることにより、達成される。The above purpose is to reduce the sensible heat cooling capacity by installing a reheater at the rear of the conventional indoor heat exchanger, and during dehumidification operation, the air that has been cooled and dehumidified by the indoor heat exchanger is reheated by the reheater. (This also enables cooling operation during the intermediate period.) In addition, prevention of discharge pressure drop during heating operation is achieved by installing a condensing pressure regulating valve on the outlet side of the indoor heat exchanger and bypass piping via a pressure reducing device between the inlet and outlet of the indoor heat exchanger. .
（１） 除ＯＬ運転金行う場合は、室外熱交換器で凝
縮された篩温高圧の液冷媒は室内再熱器を通り膨張弁で
絞られて膨張する。膨張弁を出た低圧飽和の液冷媒は室
内熱交換器で低圧飽和ガスとなり冷却される。この場合
、室内空気は室内送風機によってまず室内熱交換器１２
に送られ冷却除湿され、次に冷媒の放熱により熱せられ
ている再熱器１７を通過して再び暖められ、乾燥空気と
なって室内へ送υ出されるので、室内の温度は下がらず
に湿度だけをさげることができる。この時、再熱器１７
のバイパス配管に設けである電磁弁は閉じており、又室
外機の吸込空気温度が低下したときに、室内側吸入圧力
が低下するのを防止するため、室外機の吸込空気温度お
よび室内熱交換器１２の出口温度により室外送風機を停
止又は可変速できるように制御することができる。(1) When removing OL operating costs, the sieve temperature and high pressure liquid refrigerant condensed in the outdoor heat exchanger passes through the indoor reheater and is throttled by the expansion valve and expanded. The low-pressure saturated liquid refrigerant that exits the expansion valve becomes a low-pressure saturated gas in an indoor heat exchanger and is cooled. In this case, the indoor air is first transferred to the indoor heat exchanger 12 by the indoor blower.
The air is cooled and dehumidified, and then passes through the reheater 17, which is heated by the heat radiation of the refrigerant, where it is warmed again and sent indoors as dry air, so the indoor temperature does not drop and the humidity is reduced. can only be lowered. At this time, reheater 17
The solenoid valve installed in the bypass piping is closed, and in order to prevent the indoor suction pressure from decreasing when the outdoor unit suction air temperature drops, the Depending on the outlet temperature of the container 12, the outdoor blower can be controlled to be stopped or to be variable in speed.
（２）暖房運転の場合は制圧圧力が設定圧力以下のとき
、凝縮圧力調整弁が閉となり設定圧力以上になった場合
凝縮圧力調整弁が開となり高圧圧力を常に一定に調節す
る。また、バイパス配管は凝縮圧力調整弁が全閉のとき
、サイクル内を安定させるために冷媒を一定量ボイバス
させるものである。(2) In the case of heating operation, when the suppressed pressure is below the set pressure, the condensing pressure regulating valve is closed, and when the pressure is above the set pressure, the condensing pressure regulating valve is opened and the high pressure is always adjusted to a constant level. Furthermore, the bypass piping allows a certain amount of refrigerant to be boiled in order to stabilize the inside of the cycle when the condensing pressure regulating valve is fully closed.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
冷房運転時は、圧縮機２ＶＣより圧縮された制圧過熱ガ
スは、四方弁４を通り凝動器５を通って室外送風＠７ｖ
ｃより冷却されて液冷媒となる。この液冷媒は逆止弁９
、阻止弁１．０、液配管、電磁弁１８を通り、膨張弁１
４にて絞られて膨張し低圧飽和となった液冷媒は室内熱
交換器１２を通って室同送Ｓ、機１６により冷却さ几た
空気と熱交換して低圧飽和ガスとなり、ガス配管、阻止
弁１１、四方弁４、アキュームレータ３を通り圧縮機２
に吸入される。During cooling operation, the suppressed superheated gas compressed by the compressor 2VC passes through the four-way valve 4, passes through the condenser 5, and is sent to the outdoor air @ 7V.
It is cooled by c and becomes a liquid refrigerant. This liquid refrigerant is transferred to the check valve 9
, through the blocking valve 1.0, the liquid pipe, the solenoid valve 18, and the expansion valve 1.
The liquid refrigerant, which has been throttled and expanded to become low-pressure saturated in step 4, passes through the indoor heat exchanger 12 and is sent indoors S, where it exchanges heat with cooled air in the machine 16 to become a low-pressure saturated gas, which is then sent to the gas piping, The compressor 2 passes through the blocking valve 11, the four-way valve 4, and the accumulator 3.
is inhaled.
暖房運転時は圧縮機２により圧縮された高圧過熱ガスは
四方弁４を通り阻止弁１１、室内熱交換器１２全通って
室内送風ｆｉｔ ６Ｖｃより冷却されて液冷媒とｌジ、
このと＠室内吹き出し口からは温風を送りだす。この液
冷媒は凝縮圧力調整弁１９、逆止弁１３、阻止弁１０を
通り膨張弁８Ｖｃよって絞られて膨張し低圧飽和となっ
た液冷媒は室外送風機７により冷却されｆｃ空気と熱交
換して低圧飽和ガスとなり、四方弁４、アキュームレー
タ３を通り圧縮機２に吸入される。During heating operation, the high-pressure superheated gas compressed by the compressor 2 passes through the four-way valve 4, the blocking valve 11, and the indoor heat exchanger 12, where it is cooled by the indoor ventilation fit 6Vc and is mixed with liquid refrigerant.
This will send out warm air from the indoor air outlet. This liquid refrigerant passes through the condensation pressure regulating valve 19, the check valve 13, and the blocking valve 10, is throttled and expanded by the expansion valve 8Vc, and the liquid refrigerant, which has reached low pressure saturation, is cooled by the outdoor blower 7 and exchanges heat with the fc air. The gas becomes a low-pressure saturated gas, passes through the four-way valve 4 and the accumulator 3, and is sucked into the compressor 2.
本実施例によれば、除湿運転全行う場合は、冷戻運転と
同じように、圧縮機２で圧縮された冷媒ガスは四方弁４
を通り凝縮器５を通って凝縮され液冷媒となる。ここで
除湿運転時は電磁弁１８を閉じ再熱器１７へ高温の液冷
媒を通す。再熱器１７を通った液冷媒は膨張弁１４にて
絞られ膨張し低圧飽和となった液冷媒は冷房運転時と同
様に室内熱交換器１２を通り四方弁４、アキュームレー
タ３から圧縮機２へ吸入される、このように除湿運転時
の室内空気は室内送風機＋６ＶＣよって室内熱交換器１
２に送られ冷却除湿され、次に冷媒の放熱により熱せら
れている再熱器を通過して再び暖められ、乾燥空気とな
って送り出されるので、室内の温度は下げずに湿度だけ
を下げる効果がある。According to this embodiment, when performing the entire dehumidification operation, the refrigerant gas compressed by the compressor 2 is
It passes through the condenser 5 and is condensed to become a liquid refrigerant. During dehumidification operation, the solenoid valve 18 is closed and the high temperature liquid refrigerant is passed to the reheater 17. The liquid refrigerant that has passed through the reheater 17 is throttled and expanded by the expansion valve 14, and the liquid refrigerant that has become saturated at low pressure passes through the indoor heat exchanger 12, as in the case of cooling operation, from the four-way valve 4 to the accumulator 3 to the compressor 2. In this way, the indoor air during dehumidification operation is drawn into the indoor heat exchanger 1 by the indoor blower +6VC.
2, where it is cooled and dehumidified, and then passed through a reheater that is heated by the heat radiation of the refrigerant, where it is warmed again and sent out as dry air, which has the effect of lowering only the humidity without lowering the indoor temperature. There is.
また、除湿運転時には室外機１の吸込空気温度は低いた
め、凝縮圧力が下がり吸入圧力が低くなるのを防ぐため
熱交換器の冷媒温度を感知して室外送風＠７の回転数を
低速又は停止させ、吐出圧力及び吸入圧力を制御し室内
空気温度を下げない様な制御回路を設けている、このこ
とにより除湿運転時の運転範囲を広げることができる。In addition, during dehumidification operation, the suction air temperature of the outdoor unit 1 is low, so in order to prevent the condensation pressure from decreasing and the suction pressure from becoming low, the refrigerant temperature of the heat exchanger is sensed and the rotation speed of the outdoor fan @ 7 is slowed down or stopped. A control circuit is provided to control the discharge pressure and suction pressure so as not to lower the indoor air temperature.This allows the operating range during dehumidification operation to be expanded.
暖房運転時高圧圧力が低い場合には、凝縮圧力調整弁１
９が設定圧力により開または閉となり凝縮圧力を常に一
定に保つ。このことにより、外気低温時の凝縮圧力低下
を防止することができる。If the high pressure is low during heating operation, the condensing pressure regulating valve 1
9 opens or closes depending on the set pressure to keep the condensing pressure constant. This makes it possible to prevent a drop in condensing pressure when the outside temperature is low.
凝縮圧力調整弁１９が全閉のときは、凝縮圧力が急激に
上昇するため、バイパス配管２０により一定量の冷媒を
バイパスさせて凝縮圧力の上昇を緩和きせる。When the condensing pressure regulating valve 19 is fully closed, the condensing pressure increases rapidly, so a certain amount of refrigerant is bypassed by the bypass pipe 20 to alleviate the increase in the condensing pressure.
本発明によれば、室内熱交換器の他に再熱器を設は再熱
器をバイパスするバイパス配管と電磁弁を設けることに
より、冷却運転と同じに加熱運転を行うことができるの
で、従来の除湿機能である除湿量を減少させることなし
に、顕熱冷却能力を小さくすることから、室内空気温度
を下げずに除湿を行う効果がある。また、除湿運転時は
室内熱交換器の配管温度を感知し室外送風機の回転数を
可変に制御することにより、室外温度に影響されずに、
凝縮圧力、蒸発器圧力（ｆ−調整し常に効率のよい除湿
運転を行うことができる。According to the present invention, by installing a reheater in addition to an indoor heat exchanger, by providing bypass piping and a solenoid valve that bypasses the reheater, heating operation can be performed in the same way as cooling operation, which makes it possible to perform heating operation in the same way as cooling operation. Since the sensible heat cooling capacity is reduced without reducing the amount of dehumidification, which is the dehumidification function of the system, it is effective to dehumidify without lowering the indoor air temperature. In addition, during dehumidification operation, the indoor heat exchanger piping temperature is sensed and the outdoor fan's rotation speed is variably controlled, so that it is not affected by the outdoor temperature.
By adjusting the condensing pressure and evaporator pressure (f-), efficient dehumidification operation can be performed at all times.
また、暖房運転時の急激な凝縮圧力低下を凝縮圧力調整
弁により防止し、暖房能力の低下を防ぐ効果がある。Furthermore, the condensing pressure regulating valve prevents a sudden drop in condensing pressure during heating operation, which has the effect of preventing a decrease in heating capacity.
第１図は本発明の一実施例の空気調和機の冷媒配管系統
図である。FIG. 1 is a refrigerant piping system diagram of an air conditioner according to an embodiment of the present invention.
Claims (1)
機及び減圧装置より成る室外機と、室内熱交換器、送風
機、送風機用電動機、減圧装置より成る室内機とを備え
たセパレート形空冷ヒートポンプ式空調機において、室
内熱交換器とは別に再熱用熱交換器と電磁弁を介して再
熱用熱交換器をバイパスさせるバイパス配管を設け、さ
らに室内熱交換器の出口側に凝縮圧力調整弁と室内熱交
換器の入口と出口間に減圧装置を介してバイパス配管を
設けたことを特徴とする空気調和機。Separate air-cooled heat pump equipped with an outdoor unit consisting of a compressor, an outdoor heat exchanger, a four-way valve, a blower, a blower motor, and a pressure reducing device, and an indoor unit consisting of an indoor heat exchanger, a blower, a blower electric motor, and a pressure reducing device. In a type air conditioner, a reheat heat exchanger is installed separately from the indoor heat exchanger, and bypass piping is installed to bypass the reheat heat exchanger via a solenoid valve, and the condensation pressure is adjusted on the outlet side of the indoor heat exchanger. An air conditioner characterized in that bypass piping is provided between the valve and the inlet and outlet of the indoor heat exchanger via a pressure reducing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10427887A JPS63271070A (en) | 1987-04-30 | 1987-04-30 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10427887A JPS63271070A (en) | 1987-04-30 | 1987-04-30 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63271070A true JPS63271070A (en) | 1988-11-08 |
Family
ID=14376458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10427887A Pending JPS63271070A (en) | 1987-04-30 | 1987-04-30 | Air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63271070A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07186709A (en) * | 1993-12-24 | 1995-07-25 | Matsushita Electric Ind Co Ltd | Heat pump air-conditioning/heating and dehumidifying equipment for electric vehicle |
| JP2008224210A (en) * | 2008-05-12 | 2008-09-25 | Mitsubishi Electric Corp | Air conditioner and operation control method of air conditioner |
| JP2010203685A (en) * | 2009-03-03 | 2010-09-16 | Mitsubishi Electric Corp | Air conditioning device and method for controlling the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4814374U (en) * | 1971-07-02 | 1973-02-17 | ||
| JPS5216352A (en) * | 1975-07-22 | 1977-02-07 | Hiroo Akiyama | Shiitake mushroom cultivation |
| JPS54121448A (en) * | 1978-03-14 | 1979-09-20 | Mitsubishi Electric Corp | Refrigerating system |
-
1987
- 1987-04-30 JP JP10427887A patent/JPS63271070A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4814374U (en) * | 1971-07-02 | 1973-02-17 | ||
| JPS5216352A (en) * | 1975-07-22 | 1977-02-07 | Hiroo Akiyama | Shiitake mushroom cultivation |
| JPS54121448A (en) * | 1978-03-14 | 1979-09-20 | Mitsubishi Electric Corp | Refrigerating system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07186709A (en) * | 1993-12-24 | 1995-07-25 | Matsushita Electric Ind Co Ltd | Heat pump air-conditioning/heating and dehumidifying equipment for electric vehicle |
| JP2008224210A (en) * | 2008-05-12 | 2008-09-25 | Mitsubishi Electric Corp | Air conditioner and operation control method of air conditioner |
| JP2010203685A (en) * | 2009-03-03 | 2010-09-16 | Mitsubishi Electric Corp | Air conditioning device and method for controlling the same |
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