JPH0512628B2 - - Google Patents
Info
- Publication number
- JPH0512628B2 JPH0512628B2 JP59173211A JP17321184A JPH0512628B2 JP H0512628 B2 JPH0512628 B2 JP H0512628B2 JP 59173211 A JP59173211 A JP 59173211A JP 17321184 A JP17321184 A JP 17321184A JP H0512628 B2 JPH0512628 B2 JP H0512628B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- valve
- compressor
- refrigerant
- defrosting
- 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 48
- 238000010257 thawing Methods 0.000 claims description 43
- 238000010438 heat treatment Methods 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 20
- 238000005338 heat storage Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 1
- QHFQAJHNDKBRBO-UHFFFAOYSA-L calcium chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Ca+2] QHFQAJHNDKBRBO-UHFFFAOYSA-L 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はヒートポンプ式空調機に係り、特に暖
房運転において室外熱交換器に付着した霜の除霜
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a heat pump type air conditioner, and particularly to defrosting of frost adhering to an outdoor heat exchanger during heating operation.
ヒートポンプ式空調機においては、暖房時に室
外空気が低温高湿度になると室外熱交換器に霜が
付くため、これを適宜取り除く必要がある。一般
に霜を取り除く運転、つまり除霜運転は、ヒート
ポンプサイクルを冷房モードに切え換えて行う。
この除霜運転では、室内熱交換器が蒸発器として
作用するため、室内に冷風が吹き出すという問題
がある。
In a heat pump type air conditioner, when outdoor air becomes low temperature and high humidity during heating, frost forms on the outdoor heat exchanger, so it is necessary to remove this as appropriate. Generally, an operation to remove frost, that is, a defrosting operation, is performed by switching the heat pump cycle to cooling mode.
In this defrosting operation, since the indoor heat exchanger acts as an evaporator, there is a problem in that cold air is blown into the room.
除霜時おける冷風の吹き出しを防止するため、
従来はホツトガスを利用した除霜方式、また蓄熱
を利用した除霜方式を採用している。 To prevent cold air from blowing out during defrosting,
Conventionally, a defrosting method using hot gas or a defrosting method using heat storage has been adopted.
第４図は前者の除霜方式を採用したヒートポン
プ式空調機のサイクル系統図を示し、また第５図
は後者の除霜方式を採用したヒートポンプ式空調
機のサイクル系統図を示している。 FIG. 4 shows a cycle diagram of a heat pump air conditioner that uses the former defrosting method, and FIG. 5 shows a cycle diagram of a heat pump air conditioner that uses the latter defrosting method.
第４図のヒートポンプ式空調機は、圧縮機１、
室内熱交換器２、室外熱交換器３、四方弁４、減
圧装置５によりヒートポンプサイクルを構成する
と共に、室外熱交換器３と減圧装置５との間に開
閉弁６を設け、この開閉弁６と室外熱交換器３と
の間と圧縮機１の吐出側とを連絡し、かつホツト
ガス開閉弁８を介在するホツトガスバイパス回路
７を設けた構成となつている。 The heat pump air conditioner shown in Fig. 4 has a compressor 1,
The indoor heat exchanger 2, the outdoor heat exchanger 3, the four-way valve 4, and the pressure reducing device 5 constitute a heat pump cycle, and an on-off valve 6 is provided between the outdoor heat exchanger 3 and the pressure reducing device 5. A hot gas bypass circuit 7 is provided which connects the outdoor heat exchanger 3 and the discharge side of the compressor 1, and has a hot gas on-off valve 8 interposed therebetween.
そして、暖房運転時には、圧縮機１より吐出さ
れる冷媒を、四方弁４〜室内熱交換器２〜減圧装
置５〜開閉弁６〜室外熱交換器３〜四方弁４〜圧
縮機１の順に循環させる。また、暖房運転におい
て室外熱交換器３に着霜が生じ、除霜が必要とな
つた場合には、ホツトガス開閉弁８を開き、開閉
弁６を閉じて、圧縮機１の吐出ガス冷媒を、ホツ
トガスバイパス回路７〜室外熱交換器３〜四方弁
４〜圧縮機１の順に循環させて、高温冷媒の熱に
よつて室外熱交換器３の除霜を行う。 During heating operation, the refrigerant discharged from the compressor 1 is circulated in the order of four-way valve 4 - indoor heat exchanger 2 - pressure reducing device 5 - on-off valve 6 - outdoor heat exchanger 3 - four-way valve 4 - compressor 1. let In addition, if frost forms on the outdoor heat exchanger 3 during heating operation and defrosting is required, the hot gas on-off valve 8 is opened, the on-off valve 6 is closed, and the discharged gas refrigerant of the compressor 1 is The hot gas is circulated in the order of the hot gas bypass circuit 7, the outdoor heat exchanger 3, the four-way valve 4, and the compressor 1, and the outdoor heat exchanger 3 is defrosted by the heat of the high-temperature refrigerant.
しかし、前述の空調機においては、除霜時に開
閉弁６が閉じていて、冷媒が室内熱交換器２にた
まつてしまうので、除霜サイクル内を循環する冷
媒量が不足する。その結果、圧縮機入力が小さく
なり、除霜に必要な熱量を確保するためには、か
なり長い時間除霜運転を行わなければならない。
また、除霜運転時には室内熱交換器２が蒸発器と
して作用することはないので、室内への冷風の吹
き出しを防止できるが、室内の暖房機能も失なつ
てしまう。 However, in the above-mentioned air conditioner, the on-off valve 6 is closed during defrosting, and the refrigerant accumulates in the indoor heat exchanger 2, resulting in a shortage of refrigerant circulating in the defrosting cycle. As a result, the compressor input becomes small, and in order to secure the amount of heat necessary for defrosting, defrosting operation must be performed for a considerably long time.
Further, during the defrosting operation, the indoor heat exchanger 2 does not function as an evaporator, so although it is possible to prevent cold air from being blown into the room, the indoor heating function is also lost.
一方、第５図のヒートポンプ式空調機は、圧縮
機１、室内熱交換器２、室外熱交換器３、四方弁
４、減圧装置５によりヒートポンプサイクルを構
成すると共に、室外熱交換器３と減圧装置５との
間に開閉弁６を設け、その開閉弁６と室外熱交換
器３との間圧縮機１の吸入側とを連絡し、かつ液
冷媒開閉弁１０および減圧装置１１を介在するバ
イパス回路９を設け、該バイパス回路９に、暖房
時における高圧回路の冷媒の熱を蓄熱する蓄熱槽
１２を具えた構成となつてる。 On the other hand, the heat pump type air conditioner shown in FIG. An on-off valve 6 is provided between the on-off valve 6 and the outdoor heat exchanger 3, and a bypass connecting the suction side of the compressor 1 between the on-off valve 6 and the outdoor heat exchanger 3, and via a liquid refrigerant on-off valve 10 and a pressure reducing device 11. A circuit 9 is provided, and the bypass circuit 9 is provided with a heat storage tank 12 that stores heat of the refrigerant in the high-pressure circuit during heating.
そして、暖房運転時には、圧縮機１より吐出さ
れる冷媒を、四方弁４〜蓄熱槽１２〜室内熱交換
器２〜減圧装置５〜開閉弁６〜室外熱交換器３〜
四方弁４〜圧縮機１の順に循環させて、暖房を行
うと同時に、蓄熱槽１２で蓄熱する。また、除霜
運転では、開閉弁６を閉じ、液冷媒開閉弁１０を
開くと共に、四方弁４を冷房モード位置に切換え
て、圧縮機１の吐出ガス冷媒を、四方弁４〜室外
熱交換器３〜液冷媒開閉弁１０〜減圧装置１１〜
蓄熱槽１２〜四方弁４〜圧縮機１の順に循環させ
る。即ち、暖房中に蓄熱した熱を熱源として室外
熱交換器３の除霜を行うものである。 During heating operation, the refrigerant discharged from the compressor 1 is transferred from the four-way valve 4 to the heat storage tank 12 to the indoor heat exchanger 2 to the pressure reducing device 5 to the on-off valve 6 to the outdoor heat exchanger 3 to
The air is circulated in the order of the four-way valve 4 and the compressor 1 to perform heating and at the same time, heat is stored in the heat storage tank 12. In the defrosting operation, the on-off valve 6 is closed, the liquid refrigerant on-off valve 10 is opened, and the four-way valve 4 is switched to the cooling mode position to transfer the gas refrigerant discharged from the compressor 1 from the four-way valve 4 to the outdoor heat exchanger. 3 ~ Liquid refrigerant on/off valve 10 ~ Pressure reducing device 11 ~
The heat storage tank 12, the four-way valve 4, and the compressor 1 are circulated in this order. That is, the outdoor heat exchanger 3 is defrosted using the heat stored during heating as a heat source.
しかし、前述の空調機においては、除霜に必要
な熱量を確保できて除霜時間をある程度短縮でき
るが、第４図のものと同様に室内の暖房機能を失
なつてしまう。 However, in the above-mentioned air conditioner, although the amount of heat necessary for defrosting can be secured and the defrosting time can be shortened to some extent, the indoor heating function is lost like the one in FIG. 4.
本発明の目的は、従来技術の問題点を解消し、
除霜時間の短縮を可能とし、しかも除霜運転中も
暖房を行えるヒートポンプ式空調機を提供するこ
とにある。
The purpose of the present invention is to solve the problems of the prior art,
To provide a heat pump type air conditioner that can shorten defrosting time and perform heating even during defrosting operation.
上記目的を達成するため本発明は、圧縮機、四
方弁、室内熱交換器、室外熱交換器、減圧装置な
どから構成されるヒートポンプ式空調機におい
て、室外熱交換器の暖房運転時冷媒入口側に設け
られ、除霜運転時に閉とされる開閉弁と、室外熱
交換器と前記開閉弁の間と圧縮機吐出側とを連結
し、かつ途中に除霜運転時に開とされるホツトガ
ス開閉弁を有する第１バイパス回路と、室内熱交
換器と前記開閉弁との間と圧縮機吸入側とを連結
し、かつ途中に減圧手段と、除霜運転開始から除
霜運転終了に至る期間開にされ室内熱交換器から
の液冷媒を圧縮機吸入側に流す液冷媒開閉弁とを
有し、除霜運転中においても室内熱交換器で暖房
運転を継続させるようにした第２バイパス回路と
を備え、暖房運転で室外熱交換器の除霜を行なう
場合に、前記四方弁は暖房運転回路を維持し、前
記開閉弁を閉、前記ホツトガス開閉弁及び前記液
冷媒開閉弁を開とし、圧縮機の吐出冷媒の一部を
室外熱交換器に流入させると共に前記圧縮機吐出
冷媒の残りを室内熱交換器に流して室内の暖房運
転を継続し、この室内熱交換器からの液冷媒を圧
縮機吸入側に戻す構成としたことを特徴とするも
のである。
To achieve the above object, the present invention provides a heat pump type air conditioner comprising a compressor, a four-way valve, an indoor heat exchanger, an outdoor heat exchanger, a pressure reducing device, etc., on the refrigerant inlet side of the outdoor heat exchanger during heating operation. a hot gas on-off valve that connects between the outdoor heat exchanger and the on-off valve and the compressor discharge side and that is opened during defrosting operation; a first bypass circuit that connects the indoor heat exchanger, the on-off valve, and the compressor suction side, and includes a pressure reducing means in the middle, and is open for a period from the start of the defrosting operation to the end of the defrosting operation. and a liquid refrigerant on-off valve that allows liquid refrigerant from the indoor heat exchanger to flow to the compressor suction side, and a second bypass circuit that allows the indoor heat exchanger to continue heating operation even during defrosting operation. In preparation, when defrosting the outdoor heat exchanger during heating operation, the four-way valve maintains the heating operation circuit, closes the on-off valve, opens the hot gas on-off valve and the liquid refrigerant on-off valve, and closes the compressor. A part of the refrigerant discharged from the compressor flows into the outdoor heat exchanger, and the rest of the refrigerant discharged from the compressor flows into the indoor heat exchanger to continue indoor heating operation, and the liquid refrigerant from the indoor heat exchanger is transferred to the compressor. It is characterized in that it is configured to return to the suction side.
以下、本発明の一実施例を第１図により説明す
る。第１図は本発明によるヒートポンプ式空調機
のサイクル系統図を示している。このヒートポン
プ式空調機は、圧縮機１１、室内熱交換器１２、
室外熱交換器１３、四方弁１４、減圧装置１５を
図示のように配管接続してヒートポンプサイクル
を構成していると共に、室外熱交換器１３と減圧
装置１５との間に開閉弁１６を設けている。また
開閉弁１６と室外熱交換器１３との間に圧縮機１
１の吐出部とを、ホツトガス開閉弁１８を介設す
る第１バイパス回路１７で連絡し、かつ室内熱交
換器１２と減圧装置１５との間と圧縮機１１の吸
入部とを、液冷媒開閉弁２０および減圧装置２１
を介設する第２バイパス回路１９で連絡してい
る。
An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows a cycle system diagram of a heat pump type air conditioner according to the present invention. This heat pump type air conditioner includes a compressor 11, an indoor heat exchanger 12,
An outdoor heat exchanger 13, a four-way valve 14, and a pressure reducing device 15 are connected via piping as shown to constitute a heat pump cycle, and an on-off valve 16 is provided between the outdoor heat exchanger 13 and the pressure reducing device 15. There is. In addition, the compressor 1 is connected between the on-off valve 16 and the outdoor heat exchanger 13.
1 through a first bypass circuit 17 with a hot gas on-off valve 18 interposed therebetween, and between the indoor heat exchanger 12 and the pressure reducing device 15 and the suction section of the compressor 11, the liquid refrigerant is opened and closed. Valve 20 and pressure reducing device 21
They are connected through a second bypass circuit 19 that intervenes.
前記開閉弁１６は、冷房、暖房運転時には開
き、除霜運転時に閉じるよう制御される。 The on-off valve 16 is controlled to open during cooling and heating operations, and close during defrosting operations.
前記のホツトガス開閉弁１８および液冷媒開閉
弁２０は、冷房、暖房運転時には閉じ、除霜運転
時に開くよう制御される。 The hot gas on-off valve 18 and the liquid refrigerant on-off valve 20 are controlled to close during cooling and heating operations, and to open during defrosting operations.
次に本発明の作用について説明する。暖房運転
により室外熱交換器１３に着霜が生じて、除霜が
必要になつた場合には、ヒートポンプサイクルを
暖房モードの状態のまゝ、開閉弁１６を閉じ、ホ
ツトガス開閉弁１８および液冷媒開閉弁２０を開
く。これにより、圧縮機１１より吐出される大部
分のガス冷媒（ホツトガス）は、第１バイパス回
路１７〜室外熱交換器１３〜四方弁１４〜圧縮機
１１の順に循環すると共に、一部のガス冷媒は、
四方弁１４〜室内熱交換器１２〜第２バイパス回
路１９〜圧縮機１１の順に循環する。この除霜に
おいて、室内熱交換器１２で凝縮液化し、第２バ
イパス回路１９の減圧装置２１で減圧されて圧縮
機１１に吸入される冷媒は、該圧縮機１１から吸
熱して蒸気冷媒となり、除霜サイクル中の冷媒量
が増加するので、圧力を高くすることができる。
従つて、圧縮機１１の入力を増加させることがで
き、除霜に必要な熱量を確保できて、除霜時間を
短縮することができる。 Next, the operation of the present invention will be explained. When frost forms on the outdoor heat exchanger 13 due to heating operation and defrosting becomes necessary, the heat pump cycle remains in the heating mode and the on-off valve 16 is closed, and the hot gas on-off valve 18 and liquid refrigerant are closed. Open the on-off valve 20. As a result, most of the gas refrigerant (hot gas) discharged from the compressor 11 circulates in the order of the first bypass circuit 17 - the outdoor heat exchanger 13 - the four-way valve 14 - the compressor 11, and a part of the gas refrigerant teeth,
It circulates in the order of the four-way valve 14 - the indoor heat exchanger 12 - the second bypass circuit 19 - the compressor 11. In this defrosting, the refrigerant is condensed and liquefied in the indoor heat exchanger 12, depressurized in the pressure reducing device 21 of the second bypass circuit 19, and sucked into the compressor 11. The refrigerant absorbs heat from the compressor 11 and becomes a vapor refrigerant, Since the amount of refrigerant during the defrost cycle is increased, the pressure can be increased.
Therefore, the input to the compressor 11 can be increased, the amount of heat required for defrosting can be secured, and the defrosting time can be shortened.
また、室内熱交換器１２にもホツトガスが供給
されるので、暖房を行うことができる。 Moreover, since hot gas is also supplied to the indoor heat exchanger 12, heating can be performed.
尚、本実施例において、前記液冷媒開閉弁２０
は、除霜中のサイクル圧力、例えば圧縮機吸入圧
力を検出し、その圧力が設定圧力以下のとき開く
ようにしてもよく、またタイマにより開時間を制
御するようにしてもよい。 In addition, in this embodiment, the liquid refrigerant on-off valve 20
may be configured to detect cycle pressure during defrosting, for example, compressor suction pressure, and open when the detected pressure is below a set pressure, or the opening time may be controlled by a timer.
第２図は本発明の他の実施例を示し、第１図と
異なるのは、第２バイパス１９の入口側を開閉弁
１６と減圧装置１５との間に接続し、かつ第２バ
イパス回路１９における液冷媒開閉弁２０の下流
側に、暖房時の高圧回路の冷媒の熱を蓄熱する蓄
熱槽２２を具えた点にある。 FIG. 2 shows another embodiment of the present invention, which differs from FIG. 1 in that the inlet side of the second bypass 19 is connected between the on-off valve 16 and the pressure reducing device 15, and A heat storage tank 22 is provided on the downstream side of the liquid refrigerant on-off valve 20 to store heat of the refrigerant in the high-pressure circuit during heating.
次に本実施例の作用を説明する。暖房運転時に
は、圧縮機１１より吐出される冷媒を、四方弁１
４〜蓄熱槽２２〜室内熱交換器１２〜減圧装置１
５〜開閉弁１６〜室外熱交換器１３〜四方弁１４
〜圧縮機１１の順に循環させて、室内の暖房を行
うと共に、蓄熱槽２２に蓄積する。 Next, the operation of this embodiment will be explained. During heating operation, the refrigerant discharged from the compressor 11 is transferred to the four-way valve 1.
4 ~ Heat storage tank 22 ~ Indoor heat exchanger 12 ~ Pressure reducing device 1
5 ~ Open/close valve 16 ~ Outdoor heat exchanger 13 ~ Four-way valve 14
- The compressor 11 is circulated in order to heat the room and accumulate it in the heat storage tank 22.
一方、除霜時には、ヒートポンプサイクルを暖
房モードとし、開閉弁１６を閉じ、かつホツトガ
ス開閉弁１８および液冷媒開閉弁２０を開く。こ
れにより、圧縮機１１より吐出される冷媒の一部
が、第１バイパス回路１７〜室外熱交換器１３〜
四方弁１４〜圧縮機１１の順に循環して、室外熱
交換器１３の除霜を行う。また残りの冷媒が、四
方弁１４〜蓄熱槽２２〜室内熱交換器１２〜減圧
装置１５〜第２バイパス回路１９〜蓄熱槽２２〜
圧縮機１１の順に循環し、蓄熱槽２２を熱源とし
て暖房を行う。従つて、本実施例においても、除
霜を行うと同時に暖房も行える。特に室内熱交換
器１２の送風量を小さくすることにより、該室内
熱交換器１２の吹き出し温度を上昇させることが
でき、快適性が向上する。 On the other hand, during defrosting, the heat pump cycle is set to heating mode, the on-off valve 16 is closed, and the hot gas on-off valve 18 and liquid refrigerant on-off valve 20 are opened. As a result, a part of the refrigerant discharged from the compressor 11 is transferred from the first bypass circuit 17 to the outdoor heat exchanger 13 to
The air circulates in the order of the four-way valve 14 and the compressor 11 to defrost the outdoor heat exchanger 13. In addition, the remaining refrigerant flows from the four-way valve 14 to the heat storage tank 22 to the indoor heat exchanger 12 to the pressure reducing device 15 to the second bypass circuit 19 to the heat storage tank 22.
It circulates in the order of the compressor 11 and performs heating using the heat storage tank 22 as a heat source. Therefore, in this embodiment as well, heating can be performed at the same time as defrosting. In particular, by reducing the amount of air blown from the indoor heat exchanger 12, the temperature of the air blown from the indoor heat exchanger 12 can be increased, improving comfort.
尚、前記蓄熱槽２２の蓄熱材としては、水など
顕熱を利用するものでも、塩化カルシウム六水塩
など潜熱を利用するものでもよい。 The heat storage material for the heat storage tank 22 may be one that utilizes sensible heat, such as water, or one that utilizes latent heat, such as calcium chloride hexahydrate.
第３図も本発明の他の実施例を示し、蓄熱槽２
２内の小容量の電気ヒータ２３を設け、暖房運転
中に前記電気ヒータ２３に通電して蓄熱してお
き、除霜運転時に第２図と同様に冷媒を循環さ
せ、一部の冷媒によつて蓄熱を熱源とする暖房を
行うようにしたものである。 FIG. 3 also shows another embodiment of the present invention, in which the heat storage tank 2
A small-capacity electric heater 23 is installed in the heater 2, and electricity is supplied to the electric heater 23 during heating operation to store heat. During defrosting operation, refrigerant is circulated in the same way as shown in FIG. This system uses heat storage as a heat source for heating.
本実施例においても、第２図と同様な効果を達
成できる。 In this embodiment as well, effects similar to those shown in FIG. 2 can be achieved.
本発明は、暖房運転で室外熱交換器の除霜を行
なう場合に、四方弁は暖房運転回路を維持し、室
外熱交換器の暖房運転時冷媒入口側に設けられた
開閉弁を閉とし、第１バイパス回路のホツトガス
開閉弁及び第２バイパス回路の液冷媒開閉弁を開
として、圧縮機の吐出冷媒の一部を室外熱交換器
に流入させると共に前記圧縮機吐出冷媒の残りを
室内熱交換器に流して室内の暖房運転を継続し、
この室内熱交換器からの液冷媒を圧縮機吸入側に
戻す構成としているので、圧縮機からのホツトガ
スを利用して短時間で除霜を実施することができ
るだけでなく、除霜開始から終了に至るまでの間
中暖房運転を行なうことができ、したがつて除霜
運転時における快適性を損なわないという効果が
ある。
In the present invention, when defrosting the outdoor heat exchanger during heating operation, the four-way valve maintains the heating operation circuit, and during the heating operation of the outdoor heat exchanger, the on-off valve provided on the refrigerant inlet side is closed. The hot gas on-off valve of the first bypass circuit and the liquid refrigerant on-off valve of the second bypass circuit are opened to allow a part of the refrigerant discharged from the compressor to flow into the outdoor heat exchanger, and the remainder of the refrigerant discharged from the compressor is exchanged for indoor heat exchange. Pour it into the container and continue indoor heating operation.
Since the liquid refrigerant from this indoor heat exchanger is returned to the compressor suction side, it is possible not only to defrost in a short time using the hot gas from the compressor, but also to quickly defrost from the start to the end. Heating operation can be carried out all the time until the defrosting operation is performed, so there is an effect that comfort during the defrosting operation is not impaired.
第１図は本発明のヒートポンプ式空調機の一実
施例を示すサイクル系統図、第２図および第３図
は本発明の他の実施例を示すサイクル系統図、第
４図および第５図は従来のサイクル系統図であ
る。
１１……圧縮機、１２……室内熱交換器、１３
……室外熱交換器、１４……四方弁、１５……減
圧装置、１６……開閉弁、１７……第１バイパス
回路、１８……ホツトガス開閉弁、１９……第２
バイパス回路、２０……液冷媒開閉弁、２１……
減圧装置、２２……蓄熱槽、２３……電気ヒー
タ。
FIG. 1 is a cycle system diagram showing one embodiment of the heat pump type air conditioner of the present invention, FIGS. 2 and 3 are cycle system diagrams showing other embodiments of the present invention, and FIGS. 4 and 5 are It is a conventional cycle system diagram. 11...Compressor, 12...Indoor heat exchanger, 13
... Outdoor heat exchanger, 14 ... Four-way valve, 15 ... Pressure reducing device, 16 ... On-off valve, 17 ... First bypass circuit, 18 ... Hot gas on-off valve, 19 ... Second
Bypass circuit, 20...Liquid refrigerant on/off valve, 21...
Pressure reducing device, 22... heat storage tank, 23... electric heater.
Claims (1)
器、減圧装置などから構成されるヒートポンプ式
空調機において、室外熱交換器の暖房運転時冷媒
入口側に設けられ、除霜運転時に閉とされる開閉
弁と、室外熱交換器と前記開閉弁の間と圧縮機吐
出側とを連結し、かつ途中に除霜運転時に開とさ
れるホツトガス開閉弁を有する第１バイパス回路
と、室内熱交換器と前記開閉弁との間と圧縮機吸
入側とを連結し、かつ途中に減圧手段と、除霜運
転開始から除霜運転終了に至る期間開にされ室内
熱交換器からの液冷媒を圧縮機吸入側に流す液冷
媒開閉弁とを有し、除霜運転中においても室内熱
交換器で暖房運転を継続させるようにした第２バ
イパス回路とを備え、暖房運転で室外熱交換器の
除霜を行なう場合に、前記四方弁は暖房運転回路
を維持し、前記開閉弁を閉、前記ホツトガス開閉
弁及び前記液冷媒開閉弁を開とし、圧縮機の吐出
冷媒の一部を室外熱交換器に流入させると共に前
記圧縮機吐出冷媒の残りを室内熱交換器に流して
室内の暖房運転を継続し、この室内熱交換器から
の液冷媒を圧縮機吸入側に戻す構成としたことを
特徴とするヒートポンプ式空調機。1. In a heat pump air conditioner that consists of a compressor, four-way valve, indoor heat exchanger, outdoor heat exchanger, pressure reduction device, etc., it is installed on the refrigerant inlet side of the outdoor heat exchanger during heating operation, and is closed during defrosting operation. a first bypass circuit that connects between the outdoor heat exchanger and the on-off valve and the compressor discharge side, and has a hot gas on-off valve that is opened during defrosting operation; A pressure reducing means is connected between the heat exchanger and the on-off valve and the compressor suction side, and the liquid refrigerant from the indoor heat exchanger is opened for a period from the start of the defrosting operation to the end of the defrosting operation. and a second bypass circuit that allows the indoor heat exchanger to continue heating operation even during defrosting operation. When performing defrosting, the four-way valve maintains the heating operation circuit, closes the on-off valve, opens the hot gas on-off valve and the liquid refrigerant on-off valve, and transfers a part of the refrigerant discharged from the compressor to the outdoor heat. The liquid refrigerant is allowed to flow into the exchanger and the remainder of the compressor discharge refrigerant is sent to the indoor heat exchanger to continue indoor heating operation, and the liquid refrigerant from the indoor heat exchanger is returned to the compressor suction side. Features of heat pump air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17321184A JPS6152563A (en) | 1984-08-22 | 1984-08-22 | Heat pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17321184A JPS6152563A (en) | 1984-08-22 | 1984-08-22 | Heat pump type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6152563A JPS6152563A (en) | 1986-03-15 |
| JPH0512628B2 true JPH0512628B2 (en) | 1993-02-18 |
Family
ID=15956177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17321184A Granted JPS6152563A (en) | 1984-08-22 | 1984-08-22 | Heat pump type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6152563A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233266A (en) * | 1985-08-07 | 1987-02-13 | 松下電器産業株式会社 | Heat pump type air conditioner |
| JP2894421B2 (en) * | 1993-02-22 | 1999-05-24 | 三菱電機株式会社 | Thermal storage type air conditioner and defrosting method |
| JP2006132797A (en) * | 2004-11-02 | 2006-05-25 | Matsushita Electric Ind Co Ltd | Air conditioner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5243472U (en) * | 1975-09-23 | 1977-03-28 | ||
| JPS5618865B2 (en) * | 1973-02-13 | 1981-05-01 | ||
| JPS58124174A (en) * | 1982-01-20 | 1983-07-23 | 松下電器産業株式会社 | Refrigeration cycle of air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017639Y2 (en) * | 1979-07-19 | 1985-05-30 | ダイキン工業株式会社 | Heat pump air conditioner |
-
1984
- 1984-08-22 JP JP17321184A patent/JPS6152563A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5618865B2 (en) * | 1973-02-13 | 1981-05-01 | ||
| JPS5243472U (en) * | 1975-09-23 | 1977-03-28 | ||
| JPS58124174A (en) * | 1982-01-20 | 1983-07-23 | 松下電器産業株式会社 | Refrigeration cycle of air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6152563A (en) | 1986-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3918268A (en) | Heat pump with frost-free outdoor coil | |
| JPH0331666A (en) | Heat pump type air conditioner | |
| US4799363A (en) | Room air conditioner | |
| JPS63169457A (en) | Heat pump type air conditioner | |
| JPH0512628B2 (en) | ||
| JP2526716B2 (en) | Air conditioner | |
| JP2504416B2 (en) | Refrigeration cycle | |
| JPS61262560A (en) | Heat pump type air conditioner | |
| JPH02290476A (en) | Air-conditioning and hot water feeding system equipment | |
| JPH0233108Y2 (en) | ||
| JPS5849006Y2 (en) | Hot water supply and cooling equipment | |
| JPH0849935A (en) | Regeneration air-conditioner | |
| JPS63108173A (en) | Defrostation method of heat pump type air conditioner | |
| JPS6036844Y2 (en) | Heat pump refrigeration equipment | |
| JPS637811Y2 (en) | ||
| JPS63153378A (en) | Refrigerator | |
| JPH0429345Y2 (en) | ||
| JPS62237260A (en) | Defrostation control method of heat pump type air conditioner | |
| JPS6243249Y2 (en) | ||
| JPS6321462A (en) | Air conditioner | |
| JPS6029562A (en) | Defroster for air conditioner | |
| JPH081339B2 (en) | Refrigeration cycle | |
| JPS5878058A (en) | Heat pump device | |
| JPH076714B2 (en) | Air conditioner | |
| JPS60223941A (en) | Room cooling and heating device |