JPS61272562A - Heat pump type air conditioner - Google Patents
Heat pump type air conditionerInfo
- Publication number
- JPS61272562A JPS61272562A JP11402285A JP11402285A JPS61272562A JP S61272562 A JPS61272562 A JP S61272562A JP 11402285 A JP11402285 A JP 11402285A JP 11402285 A JP11402285 A JP 11402285A JP S61272562 A JPS61272562 A JP S61272562A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- refrigerant
- outdoor heat
- air conditioner
- heat pump
- 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
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
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】
〔発明の利用分野〕
本発明は、ヒートポンプ式空気調和機に係り特に、除霜
時間の短縮に好適なヒートポンプ式空気調和機に関する
ものである。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 a heat pump type air conditioner suitable for shortening defrosting time.
ヒートポンプ式空気調和機では、外気温度が特に低い状
態で暖房運転を行つと、室外ＩＦ＋！Ｉ熱交換器に４が
付着して、室外１！＋＋熱父換器の熱父換能力が低下し
、室内側での暖房能力も＝ｒ分に機能を発揮できなくな
る。このため、−走風上に霜が付着すると除霜する必要
がある。With a heat pump type air conditioner, if you perform heating operation when the outside air temperature is particularly low, the outdoor IF+! 4 is attached to the I heat exchanger and 1 is outside! ++ The heat exchange capacity of the heat exchanger decreases, and the indoor heating capacity is no longer able to perform its function by =r minutes. For this reason, if frost adheres to the wind travel, it is necessary to defrost it.
除霜運転中の室外側熱交換器における冷媒の流れは１例
えば実公昭５３−２９５６６号公報に記載されているよ
うに、室外側熱交換器下方からホットガスを入れるもの
が知られている。Regarding the flow of refrigerant in the outdoor heat exchanger during defrosting operation, it is known that hot gas is introduced from below the outdoor heat exchanger, as described in Japanese Utility Model Publication No. 53-29566, for example.
これによれば、室外側熱交換器の下端が加熱されるため
に、融解して上から下へ流れてきた除霜水はさらに加熱
され、除霜水の再凍結は完全に防止できる利点がある。According to this, since the lower end of the outdoor heat exchanger is heated, the defrost water that has melted and flowed from the top to the bottom is further heated, and the advantage is that refreezing of the defrost water can be completely prevented. be.
しかし、除霜水が室外側熱交換器入口のホットガス温度
近くまで加熱され、除霜に必要な熱量も霜を融解させる
熱量の他に、除霜水をホットガス温度まで加熱させる熱
量が必要となることについて十分配慮されていなかった
。However, the defrosting water is heated to a temperature close to the hot gas temperature at the outdoor heat exchanger inlet, and the amount of heat required for defrosting is not only to melt the frost, but also to heat the defrosting water to the hot gas temperature. Not enough consideration was given to this.
本発明によれば、前述の従来技術の問題点を解決し、除
霜に必要な熱量を小さくでき、短時間で除霜ができる快
適なヒートポンプ式空気調和機の提供を、その目的とし
ている。According to the present invention, it is an object of the present invention to provide a comfortable heat pump type air conditioner that solves the problems of the prior art described above, can reduce the amount of heat required for defrosting, and can defrost in a short time.
本発明に係るヒートポンプ式空気調和機の構成は、圧縮
機、四方切換弁、室内側熱交換器、冷媒減圧手波、室外
側熱交換器を配管接続し。The structure of the heat pump type air conditioner according to the present invention includes a compressor, a four-way switching valve, an indoor heat exchanger, a refrigerant pressure reduction hand wave, and an outdoor heat exchanger connected through piping.
前記圧縮機の吐出側配管と、前記冷媒減圧手波、前記室
外側熱交換器間を結ぶ配管とを連通するバイパス管路を
備え、このバイパス管路を開閉する制御弁を設けてなる
ヒートポンプ式空気調和機において、除霜運転時に、前
記バイパス管路の制御弁を開いて前記バイパス管路から
前記室外側熱交換器にホットガスを導くようにした当該
室外側熱交換器の冷媒入口を、当該室外側熱交換器の下
部に設けた冷媒出口より上方に位置するように構成した
ものである。A heat pump type comprising: a bypass pipe that communicates the discharge side pipe of the compressor with a pipe connecting the refrigerant pressure reduction hand wave and the outdoor heat exchanger, and a control valve that opens and closes the bypass pipe. In the air conditioner, the refrigerant inlet of the outdoor heat exchanger is configured to open the control valve of the bypass pipe to guide hot gas from the bypass pipe to the outdoor heat exchanger during defrosting operation; It is configured to be located above the refrigerant outlet provided at the bottom of the outdoor heat exchanger.
なお１本発明を開発した考え方を付記すると次のとおり
である。Note that the idea behind developing the present invention is as follows.
除霜運転時に、室外側熱交換器の下側が冷媒出口となり
、その上部に冷媒に係るホットガスが導入される入口と
なるように構成し、融解した除霜水の不必要な加熱をな
くシ、除霜に必要な熱量を小さくてる。During defrosting operation, the lower side of the outdoor heat exchanger serves as a refrigerant outlet, and the upper part serves as an inlet into which hot gas related to the refrigerant is introduced, thereby eliminating unnecessary heating of molten defrosting water. , reducing the amount of heat required for defrosting.
さらに、冷房運転時に負荷が小さくなり、冷媒循環量を
小さくした場合でも、室外側熱交換器内に液溜りを生じ
ないように、冷媒のかわき度が大きい範囲で下部から上
部に光し、か・わき度が小さくなると上部から下部に流
れるようにすることを考えたものである。Furthermore, even when the load is small during cooling operation and the amount of refrigerant circulated is reduced, the light is illuminated from the bottom to the top in the range where the refrigerant is highly concentrated, to prevent liquid accumulation in the outdoor heat exchanger.・The idea was to allow water to flow from the top to the bottom as the sideness decreases.
以下、本発明の各実施例を第１図ないし第７図を参照し
て説明する。Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.
まず、第１図は本発明の一実施例に係るヒートポンプ式
空気調和機の冷凍サイクルの系統図、第２図は、第１図
の室外側熱交換器の側面図、第３図は、その室外側熱交
換器の正面図であろう第１図において、１は圧縮機、２
は冷房運転時と暖房運転時で冷媒の流れ方向を切換える
四方切換弁、３は室外側熱交換器（詳細後述）、４は冷
媒減圧手波に係る膨張弁、５は室内外熱交換器、６は圧
縮機１の吐出側配管と前記膨張弁４、前記室外側熱交換
器３間を結ぶ配管とを連通するバイパス管路、７はその
バイパス管路６を開閉する制御弁に係る二方弁、１３は
室外側熱交換器３の出口に設けた冷媒温度測定用のサー
ミスタである。First, Fig. 1 is a system diagram of the refrigeration cycle of a heat pump type air conditioner according to an embodiment of the present invention, Fig. 2 is a side view of the outdoor heat exchanger of Fig. 1, and Fig. 3 is its diagram. In Figure 1, which is probably a front view of the outdoor heat exchanger, 1 is a compressor, 2
is a four-way switching valve that switches the flow direction of refrigerant between cooling and heating operations, 3 is an outdoor heat exchanger (details will be described later), 4 is an expansion valve related to refrigerant pressure reduction hand waves, 5 is an indoor/outdoor heat exchanger, Reference numeral 6 denotes a bypass pipe connecting the discharge side pipe of the compressor 1 with the pipe connecting the expansion valve 4 and the outdoor heat exchanger 3, and 7 refers to a control valve that opens and closes the bypass pipe 6. A valve 13 is a thermistor provided at the outlet of the outdoor heat exchanger 3 for measuring the temperature of the refrigerant.
室外側熱交換器３の詳細を第２図、第３図を参照して説
明する。Details of the outdoor heat exchanger 3 will be explained with reference to FIGS. 2 and 3.
第２図、第３図において、８は室外側熱交換器３の中間
部に設けた分岐口で、この分岐口８は、暖房、除霜運転
時に冷媒入口（冷房運転時に冷媒出口）となるものであ
る。９は室外側熱交換器３の下部に設けた分岐口で、こ
の分岐口９は、暖房、除霜運転時に冷媒出口（冷房運転
時は冷媒入口）となるものである。１０は第１の配管、
１１は第２の配管を示す。In FIGS. 2 and 3, 8 is a branch port provided in the middle of the outdoor heat exchanger 3, and this branch port 8 serves as a refrigerant inlet during heating and defrosting operation (refrigerant outlet during cooling operation). It is something. Reference numeral 9 denotes a branch port provided at the bottom of the outdoor heat exchanger 3, and this branch port 9 serves as a refrigerant outlet during heating and defrosting operations (refrigerant inlet during cooling operation). 10 is the first pipe;
11 indicates the second pipe.
このように構成したヒートポンプ式空気調和機の動作に
ついて説明する。The operation of the heat pump air conditioner configured in this way will be explained.
まず、冷房運転時には、四方切換弁２は第１図に破線で
示すように冷房側に切換え、二方弁７は閉にするつ
圧縮機１で高温高圧となったカス冷媒は５四方切換弁２
を経て室外側熱交換器（凝縮器として作用）３へ送られ
、この室外側熱交換器３で外気に放熱、凝５縮して高圧
の液冷媒となる。この液冷媒は、膨張弁４で減圧され、
室内側熱交換器（蒸発器として作用）５で室内空気から
吸熱して室内を冷房し、冷媒量らは蒸発する。低温低圧
となった冷媒ガスは、四方切換弁２から圧縮機１に戻り
、以下同じサイクルを繰返す。First, during cooling operation, the four-way switching valve 2 is switched to the cooling side as shown by the broken line in Fig. 1, and the two-way valve 7 is closed. 2
The refrigerant is then sent to the outdoor heat exchanger 3 (acting as a condenser), where it radiates heat to the outside air and condenses to become a high-pressure liquid refrigerant. This liquid refrigerant is depressurized by the expansion valve 4,
The indoor heat exchanger (acting as an evaporator) 5 absorbs heat from the indoor air to cool the room, and the amount of refrigerant evaporates. The refrigerant gas, which has become low temperature and low pressure, returns to the compressor 1 from the four-way switching valve 2, and the same cycle is repeated thereafter.
ここで、室外側熱交換器３内の冷媒の流れは。Here, the flow of refrigerant inside the outdoor heat exchanger 3 is as follows.
まず、室外側熱交換器３の下部に設けた冷房運転時に入
口となる分岐口９から２経路に分かれて熱交換器内に入
り、一定高さまで下部から上部にｍしれたのち第１の配
管１０．第２の配管１１で室外側熱交換器３の上部に導
ひかれ、経路の前後を変えるクロス部１２を通り、上部
から下部へ流通し、冷房運転時に川口となる分岐口８で
合流して１経路となって出ていく。First, it enters the heat exchanger through two routes from the branch port 9 that is provided at the bottom of the outdoor heat exchanger 3 and serves as an inlet during cooling operation, and after passing from the bottom to the top to a certain height, the first pipe 10. The second pipe 11 leads to the upper part of the outdoor heat exchanger 3, passes through the cross part 12 that changes the route forward and backward, flows from the upper part to the lower part, and merges at the branch port 8 which becomes the river mouth during cooling operation. It becomes a route and goes out.
冷媒が、室外側熱交換器３の下部から上部に流れる高さ
が高く、冷媒配管の断面を琳位時間に通過する冷媒量、
Ｔなわち冷媒循環量が小さくなると、液溜りを生じてサ
ブクールが小さくなり、極端な場合にはサブクールがと
れなくなり、冷凍サイクル内の有効冷媒量が不足して効
率が著しく低下する。The height at which the refrigerant flows from the lower part to the upper part of the outdoor heat exchanger 3 is high, and the amount of refrigerant that passes through the cross section of the refrigerant piping during the refrigerant time,
When T, that is, the amount of refrigerant circulation becomes small, a liquid pool occurs and the subcooling becomes small, and in extreme cases, the subcooling becomes impossible, and the effective amount of refrigerant in the refrigeration cycle becomes insufficient, resulting in a significant drop in efficiency.
第４図に、サブクールがとれなくなる耐媒循壌量と、下
部から上部に冷媒が流れる高さの割合との件係な示す。FIG. 4 shows the relationship between the amount of medium circulation at which subcooling cannot be achieved and the ratio of the height at which the refrigerant flows from the bottom to the top.
第４図は、横軸に冷媒循環ｔ（ｋｇ／ｈ）、縦軸に下か
ら上の高さ割合をとり、図中の実線から下がサブクール
のとれる範囲、実線から上がサブクールのとれない範囲
を示すものである。図から明らかなように、冷媒が下部
から上部に流れる高さの割合いが室外側熱交換器全体の
１ ／ ３以下であればよいことがわかるう
換言すると、冷房運転時に負荷が小さくなり冷媒循猿敏
を小さくする場合でも、室内側熱交換器３内に液溜りが
生じないように、冷媒のかわき度が大きい範囲で下部か
ら上部へ流し、かわきσ［が小さくなると上部から下部
へ流れるようにてるためには、第２図に示す分岐口８０
位置を、分岐口９の位置を基準にして、室外側熱交換器
３の１／３以下の高さに設けることが好ましいのである
。In Figure 4, the horizontal axis is the refrigerant circulation t (kg/h), and the vertical axis is the height ratio from bottom to top. Below the solid line in the figure is the range where subcooling can be achieved, and above the solid line is the range where subcooling cannot be achieved. It indicates the range. As is clear from the figure, it is sufficient that the height ratio of the refrigerant flowing from the bottom to the top is 1/3 or less of the entire outdoor heat exchanger.In other words, the load becomes smaller during cooling operation, and the refrigerant Even when reducing the circulation rate, the refrigerant flows from the bottom to the top in a range where the degree of dryness is large, and flows from the top to the bottom when the degree of dryness σ becomes small, so as not to cause liquid accumulation in the indoor heat exchanger 3. In order to do so, the branch port 80 shown in FIG.
It is preferable to set the position at a height of ⅓ or less of the outdoor heat exchanger 3 with respect to the position of the branch port 9.
次に、暖房運転時には、四方切換弁２を暖房側に切換え
、二方弁７は閉にする。Next, during heating operation, the four-way switching valve 2 is switched to the heating side, and the two-way valve 7 is closed.
圧縮機ｌで高温高圧となったガス冷媒は、四方切換弁２
を経て室内側熱交換器（凝縮器として作用）５へ送られ
、この室内側熱交換器５で室内に放熱して室内を暖房し
、冷媒量らは凝縮して高圧の液冷媒となるっこの液冷媒
は、膨張弁４で減圧され、室外側熱交換器（蒸発器とし
て作用）３で外気から吸熱、蒸発し、低温低圧となった
冷媒カスは、四方切換弁２から圧縮機１に戻り、以下同
じサイクルを繰返す。The gas refrigerant that has become high temperature and high pressure in the compressor 1 is transferred to the four-way switching valve 2.
The refrigerant is then sent to the indoor heat exchanger 5 (which acts as a condenser), where it radiates heat into the room to heat the room, and the refrigerant is condensed and becomes a high-pressure liquid refrigerant. This liquid refrigerant is depressurized by the expansion valve 4, absorbs heat from the outside air and evaporates in the outdoor heat exchanger (acting as an evaporator) 3, and the refrigerant residue, which has become low temperature and low pressure, is transferred from the four-way switching valve 2 to the compressor 1. Go back and repeat the same cycle.
ここで、室外側熱交換器３内の冷媒の流れは、冷房運転
時とは逆に、まず、室外側熱交換器３の中間部に設けた
暖房運転時に入口となる分岐口８から２経路に分かれて
熱交換器内に入り、上部に流れて室外側熱交換器３の最
上部から第１の配管１０、第２の配管１１を通り下部へ
流れ。Here, the flow of the refrigerant in the outdoor heat exchanger 3 is reversed to that during the cooling operation. First, the flow of the refrigerant in the outdoor heat exchanger 3 begins in two routes from the branch port 8 that is provided in the middle of the outdoor heat exchanger 3 and serves as an inlet during the heating operation. The water is divided into two parts, enters the heat exchanger, flows to the upper part, and flows from the top of the outdoor heat exchanger 3 through the first pipe 10 and the second pipe 11 to the lower part.
分岐口９で合流して１経路となって出ていく。They merge at branch 9 and exit on one route.
したがって、下部から上部に流れる範囲は冷房運転のと
きよりも大きくなるが、暖房運転時の室外側熱交換器３
は蒸発器として作用しているものであり、液冷媒量が少
なく、また、低圧であるため、ガスの流速が大きく液溜
りにはならない。Therefore, the range of flow from the bottom to the top is larger than during cooling operation, but the outdoor heat exchanger 3 during heating operation
Acts as an evaporator, and since the amount of liquid refrigerant is small and the pressure is low, the gas flow rate is high and does not form a liquid pool.
暖房運転時に、室外側の空気温度が低下し、室外側熱交
換器３に着霜が生じた場合、室外での熱交換が不充分に
なるため室内側での暖房能力が低下する。着霜が進みサ
ーミスタ１３で検出される温度が一定温度以下になると
除霜運転に入る。During heating operation, when the outdoor air temperature decreases and frost forms on the outdoor heat exchanger 3, the heating capacity indoors decreases because heat exchange outdoors becomes insufficient. When frost formation progresses and the temperature detected by the thermistor 13 falls below a certain temperature, defrosting operation begins.
除霜運転時には、四方切換弁２は暖房側、二方弁７は開
にする。During defrosting operation, the four-way switching valve 2 is on the heating side and the two-way valve 7 is open.
圧縮機１から吐出される高温高圧のガス冷媒（いわゆる
ホットガス、以下ホットガスという）はバイパス管路６
から室外側熱交換器３へ流入する。ポットガスは、室外
側熱交換器３の中間部にある分岐口８から２経路に分か
れて熱交換器内に入り、上部に流れてその最上部から第
１の配管１０、第２の配管１１を通り下部へ流れ１分岐
口９で合流して１経路となって出ていく。この間、ホッ
トガスは室外側熱交換器３で放熱して付着している霜を
除霜する。低温となった冷媒ガスは、四方切換弁２を経
て圧縮機１に戻る。A high-temperature, high-pressure gas refrigerant (so-called hot gas, hereinafter referred to as hot gas) discharged from the compressor 1 is passed through a bypass pipe 6.
and flows into the outdoor heat exchanger 3. The pot gas enters the heat exchanger through two routes from the branch port 8 located in the middle of the outdoor heat exchanger 3, flows to the upper part, and flows from the top to the first pipe 10 and the second pipe 11. It flows to the lower part through 1, joins at branch 9, and exits as 1 route. During this time, the hot gas radiates heat in the outdoor heat exchanger 3 to defrost the adhering frost. The cooled refrigerant gas returns to the compressor 1 via the four-way switching valve 2.
そして、サーミスタ１３で検出する温度が一定以上にな
ると再び暖房運転に復帰する。Then, when the temperature detected by the thermistor 13 reaches a certain level or higher, the heating operation is resumed.
第５図は、除霜運転中の室外側熱交換器３の温度分布を
示す線図であり、横軸に温度（℃）縦軸に室外側熱交換
器高さを示している。FIG. 5 is a diagram showing the temperature distribution of the outdoor heat exchanger 3 during defrosting operation, in which the horizontal axis shows the temperature (° C.) and the vertical axis shows the height of the outdoor heat exchanger.
図から明らかなように、室外側熱交換器３の゛除霜運転
時入口となる分岐口８付近が最も温度が高く、除霜運転
時出口となる分岐口９付近が最も温度が低くなっている
。このため、霜は分岐口８付近から上に向って溶は始め
、最後に分岐口９付近の霜が溶ける。この結果、上部で
溶けた水は下部に流れ１分岐口８付近でいったん加熱さ
れるが、この加熱によって得られた熱量は、さらに下部
の霜を溶かすのに用いられ、はぼ０℃の水となって排出
される。また、サーミスタ１３で検出される復帰温度を
適当に選ぶことにより、霜を効率よく完全に溶かすこと
ができる。As is clear from the figure, the temperature is highest near branch port 8, which is the inlet during defrosting operation, of the outdoor heat exchanger 3, and the lowest temperature is near branch port 9, which is the outlet during defrosting operation. There is. Therefore, the frost begins to melt upward from the vicinity of the branch port 8, and finally the frost near the branch port 9 melts. As a result, the water that melts at the top flows to the bottom and is once heated near branch port 8, but the heat obtained by this heating is further used to melt the frost at the bottom, and the water at approximately 0°C flows to the bottom. and is discharged. Moreover, by appropriately selecting the return temperature detected by the thermistor 13, frost can be efficiently and completely melted.
なお、本実施例では、室外側熱交換器３における冷媒経
路が２経路のものについて説明したが、１経路あるいは
３経路以上のものでも同様の効果が得られる。In this embodiment, the outdoor heat exchanger 3 has two refrigerant paths, but the same effect can be obtained even if the refrigerant path is one path or three or more paths.
次に、第６図は、本発明の他の実施例に係るヒートポン
プ式空気調和機の室外側熱交換器に。Next, FIG. 6 shows an outdoor heat exchanger of a heat pump type air conditioner according to another embodiment of the present invention.
おける冷媒経路を示す略示構成図である。FIG.
第１図に示した冷凍サイクルにおいて、膨張弁４と室外
側熱交換器３とを結ぶ配管が長くなる場合には、第６図
に示すように、除霜運転時にホットガスを室外側熱交換
器入口から一端下方に流したのち、上方に流すようにす
ればホットガスによる除霜を効果的にし、かつ、冷媒配
管長を適正にすることができる。In the refrigeration cycle shown in Fig. 1, if the piping connecting the expansion valve 4 and the outdoor heat exchanger 3 is long, hot gas is transferred to the outdoor heat exchanger during defrosting operation, as shown in Fig. 6. If the refrigerant is allowed to flow downward at one end from the vessel inlet and then upward, defrosting by hot gas can be made effective and the length of the refrigerant piping can be made appropriate.
また、第７図は本発明のさらに他の実施例に係るヒート
ポンプ式空気調和機の室外熱交換器における冷媒経路を
示す略示構成図である。Moreover, FIG. 7 is a schematic configuration diagram showing a refrigerant path in an outdoor heat exchanger of a heat pump type air conditioner according to still another embodiment of the present invention.
第１図に示した冷凍サイクルにおいて、四方切換弁２と
室外側熱交換器３とを結ぶ配管が長くなる場合には、第
７図に示すように、除霜運転時の出口を蔓外側熱交換器
の最下端より上部になるように丁れば、冷媒配管長の短
縮をはかることができ、かつ、ホットガスによる除霜を
先の実施例と同様に効果的に行うことができる。In the refrigeration cycle shown in Fig. 1, if the piping connecting the four-way switching valve 2 and the outdoor heat exchanger 3 is long, the outlet during defrosting operation should be connected to the outside heat exchanger as shown in Fig. 7. If the exchanger is installed above the lowest end, the length of the refrigerant piping can be shortened, and defrosting using hot gas can be performed effectively as in the previous embodiment.
以上述べたように、本発明によれば、除霜に必要な熱量
を小さくでき、短時間で除霜することによって快適な空
調をなしうるヒートポンプ式空気調和機を提供すること
ができる。As described above, according to the present invention, it is possible to provide a heat pump type air conditioner that can reduce the amount of heat required for defrosting and can achieve comfortable air conditioning by defrosting in a short time.
第１図は本発明の一芙施例に係るヒートポンプ式空気調
和機の冷凍サイクルの系統図、第２図は第１図の室外側
熱交換器の側面図、第３図はその室外側熱交換器の正面
図、第４図はサフクールがとれなくなる冷媒循環量と下
部から上部に冷媒が流れる高さの割合との関係を示す線
図、第５図は除霜運転中の室外側熱交換器３の温度分布
を示す線図、第６図は本発明の他の実施例に係るヒート
ポンプ式空気調和機の室外側熱交換器における冷媒経路
を示す略示構成図。
第７図は本発明のさらに他の実施例に係るヒートポンプ
式空気調和機の室外側熱交換器における冷媒経路を示す
略示構成図である。
１・・・圧縮機 ２・・・四方切換弁３・・・
室外側熱交換器 ４・・・膨張弁５・・・室内側熱交換
器 ６・・・バイパス管路７・・・二方弁 ８
，９・・・分岐口１０・・・第１の配管 １１・・
・第２の配管代理人弁理士 小 川 勝 男゛″″−第
イ 図
第２図 第 ３ 図
第 ４− 図
パ→展塊力【量（にｇ／ん）
茅 、Ｓ 図
ｔＬ度 （′Ｑ）Fig. 1 is a system diagram of a refrigeration cycle of a heat pump air conditioner according to an embodiment of the present invention, Fig. 2 is a side view of the outdoor heat exchanger shown in Fig. 1, and Fig. 3 is a diagram of the outdoor heat exchanger. The front view of the exchanger, Figure 4 is a diagram showing the relationship between the amount of refrigerant circulation at which safe cooling cannot be achieved and the height of the refrigerant flowing from the bottom to the top, and Figure 5 is the outdoor heat exchange during defrosting operation. FIG. 6 is a schematic diagram showing a refrigerant path in an outdoor heat exchanger of a heat pump air conditioner according to another embodiment of the present invention. FIG. 7 is a schematic configuration diagram showing a refrigerant path in an outdoor heat exchanger of a heat pump type air conditioner according to still another embodiment of the present invention. 1... Compressor 2... Four-way switching valve 3...
Outdoor heat exchanger 4... Expansion valve 5... Indoor heat exchanger 6... Bypass pipe line 7... Two-way valve 8
, 9... Branch port 10... First piping 11...
・Second Plumbing Agent Patent Attorney Katsuo Ogawa ゛'''' - Figure A Figure 2 Figure 3 Figure 4- Figure 4 - Figure 4- Figure 4- Figure 4- Figure 4- Figure 4 - Quantity (g/n) 茅 , S Figure t L degree ( 'Q)
Claims (3)
波、室外側熱交換器を配管接続し、前記圧縮機の吐出側
配管と、前記冷媒減圧手段、前記室外側熱交換器間を結
ぶ配管とを連通するバイパス管路を備え、このバイパス
管路を開閉する制御弁を設けてなるヒートポンプ式空気
調和機において、除霜運転時に、前記バイパス管路の制
御弁を開いて前記バイパス管路から前記室外側熱交換器
にホットガスを導くようにした当該室外側熱交換器の冷
媒入口を、当該室外側熱交換器の下部に設けた冷媒出口
より上方に位置するように構成したことを特徴とするヒ
ートポンプ式空気調和機。1. A compressor, a four-way switching valve, an indoor heat exchanger, a refrigerant pressure reducing hand wave, and an outdoor heat exchanger are connected by piping, and a connection is made between the discharge side piping of the compressor, the refrigerant pressure reduction means, and the outdoor heat exchanger. In a heat pump air conditioner that is equipped with a bypass pipe that communicates with a connecting pipe and a control valve that opens and closes this bypass pipe, during defrosting operation, the control valve of the bypass pipe is opened and the bypass pipe is opened. The refrigerant inlet of the outdoor heat exchanger that guides hot gas from the airway to the outdoor heat exchanger is configured to be located above the refrigerant outlet provided at the lower part of the outdoor heat exchanger. A heat pump air conditioner featuring:
熱交換器における冷媒経路を、除霜運転時にホットガス
を当該室外側熱交換器の中間部に設けた冷媒入口から当
該熱交換器の上方に導びいたのち、前記冷媒入口の下部
に流通させるように構成したものであるヒートポンプ式
空気調和機。2. In the item described in claim 1, the refrigerant path in the outdoor heat exchanger is routed from the refrigerant inlet provided in the intermediate part of the outdoor heat exchanger to the upper part of the heat exchanger during the defrosting operation. The heat pump type air conditioner is configured such that the refrigerant is introduced into the refrigerant and then flows to the lower part of the refrigerant inlet.
ずれかにおいて、除霜運転時における室外側熱交換器の
ホットガス入口部を、当該室外側熱交換器の高さの１／
３以下の高さに位置するように構成したものであるヒー
トポンプ式空気調和機。3. In either of claims 1 and 2, the hot gas inlet of the outdoor heat exchanger during defrosting operation is set to 1/1 of the height of the outdoor heat exchanger.
A heat pump type air conditioner that is configured to be located at a height of 3 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60114022A JPH0648125B2 (en) | 1985-05-29 | 1985-05-29 | Heat pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60114022A JPH0648125B2 (en) | 1985-05-29 | 1985-05-29 | Heat pump type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61272562A true JPS61272562A (en) | 1986-12-02 |
| JPH0648125B2 JPH0648125B2 (en) | 1994-06-22 |
Family
ID=14627082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60114022A Expired - Lifetime JPH0648125B2 (en) | 1985-05-29 | 1985-05-29 | Heat pump type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648125B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008175410A (en) * | 2007-01-16 | 2008-07-31 | Mitsubishi Electric Corp | Heat source-side unit and air conditioning system |
| WO2009103471A2 (en) * | 2008-02-21 | 2009-08-27 | Carrier Corporation | Refrigerating circuit and method of selectively cooling or defrosting an evaporator thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096550U (en) * | 1983-12-05 | 1985-07-01 | 三菱電機株式会社 | Refrigeration equipment |
-
1985
- 1985-05-29 JP JP60114022A patent/JPH0648125B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6096550U (en) * | 1983-12-05 | 1985-07-01 | 三菱電機株式会社 | Refrigeration equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008175410A (en) * | 2007-01-16 | 2008-07-31 | Mitsubishi Electric Corp | Heat source-side unit and air conditioning system |
| WO2009103471A2 (en) * | 2008-02-21 | 2009-08-27 | Carrier Corporation | Refrigerating circuit and method of selectively cooling or defrosting an evaporator thereof |
| WO2009103471A3 (en) * | 2008-02-21 | 2009-10-29 | Carrier Corporation | Refrigerating circuit and method of selectively cooling or defrosting an evaporator thereof |
| US20100300122A1 (en) * | 2008-02-21 | 2010-12-02 | Carrier Corporation | Refrigerating Circuit And Method Of Selectively Cooling Or Defrosting An Evaporator Thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648125B2 (en) | 1994-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |