JPH08170864A - Heat pump air conditioner and defrosting method - Google Patents
Heat pump air conditioner and defrosting methodInfo
- Publication number
- JPH08170864A JPH08170864A JP6314499A JP31449994A JPH08170864A JP H08170864 A JPH08170864 A JP H08170864A JP 6314499 A JP6314499 A JP 6314499A JP 31449994 A JP31449994 A JP 31449994A JP H08170864 A JPH08170864 A JP H08170864A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- pipe
- inlet
- indoor heat
- outlet pipe
- 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.)
- Withdrawn
Links
- 238000010257 thawing Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 43
- 239000003507 refrigerant Substances 0.000 claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 230000002441 reversible effect Effects 0.000 claims description 9
- 238000004378 air conditioning Methods 0.000 claims 2
- 238000005485 electric heating Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
(57)【要約】 （修正有）
【目的】 熱交換器の高効率使用を可能とし，除霜運転
の立ち上がりの迅速化，除霜運転中でも暖房運転を可能
とする空調装置及び除霜方法に関するものである。
【構成】 冷媒流路切換用六方弁４の弁本体８に，圧縮
機吐出管Ｐ１と，室外熱交換器２の入口管Ｐ２と，冷房
用電動膨張弁５を介在する管Ｐ５と，室内熱交換器３の
一側管Ｐ６と，暖房用電動膨張弁６を介在させる管Ｐ３
と，圧縮機吸入管Ｐ４とを連通する冷房時位置と，
Ｐ１，Ｐ６，Ｐ３，Ｐ２，Ｐ５，Ｐ４を連通する暖房時
位置とに切換可能とし，除霜時には一旦冷房時位置に切
換えると共に，冷房用電動膨張弁を全開として室内熱交
換器３に高圧高温の冷媒を供給して暖房を継続すると共
に暖房用電動膨張弁６を適宜開度を調整して運転する。
(57) [Summary] (Modified) [Purpose] The present invention relates to an air conditioner and defrosting method that enable highly efficient use of a heat exchanger, speed up the start of defrosting operation, and allow heating operation even during defrosting operation. It is a thing. [Composition] A compressor discharge pipe P 1 , an inlet pipe P 2 of an outdoor heat exchanger 2 and a pipe P 5 with an electric expansion valve 5 for cooling interposed in a valve body 8 of a hexagonal valve 4 for switching a refrigerant flow path. , One side pipe P 6 of the indoor heat exchanger 3 and pipe P 3 for interposing the electric heating expansion valve 6
And a cooling position for communicating with the compressor suction pipe P 4 ,
P 1, P 6, P 3 , P 2, P 5, and P 4 can be switched on and heating operation position that communicates, once with switched to cooling operation position at the time of defrosting, the indoor heat cooling electric expansion valve fully opened The high-pressure and high-temperature refrigerant is supplied to the exchanger 3 to continue heating, and the electric heating expansion valve 6 is operated by appropriately adjusting the opening.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、室内側熱交換器と室外
側熱交換器の一方が凝縮機、他方が蒸発器となるように
冷媒の流れを切り換えて、冷房と暖房の二通りに使用す
るヒートポンプ空調装置及びその除霜方法に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention switches the flow of refrigerant so that one of an indoor heat exchanger and an outdoor heat exchanger serves as a condenser and the other serves as an evaporator, thereby providing two types of cooling and heating. The present invention relates to a heat pump air conditioner used and a defrosting method thereof.
【０００２】[0002]
【従来の技術】図５ないし図７において（特開昭６０−
９３２７７号）、ａは圧縮機、ｂは室外熱交換器、ｃは
室内熱交換器、ｄは冷媒流路切換用八方弁、ｅ1 は暖房
時用膨張弁、ｅ2 は冷房時用膨張弁である。2. Description of the Related Art Referring to FIGS.
No. 93277), a is a compressor, b is an outdoor heat exchanger, c is an indoor heat exchanger, d is a refrigerant flow path switching eight-way valve, e 1 is an expansion valve for heating, and e 2 is an expansion valve for cooling. Is.
【０００３】冷媒流路切換用八方弁ｄにおいて、密閉円
筒容器状の弁本体ｄ1 の円周上の一方側部には圧縮機用
吐出管ｐ1 が接続され、対向側部には軸方向に向けて順
次に、室外熱交換器入口管ｐ2 、暖房時用膨張弁ｅ1 を
介して室外熱交換器ｂの入口側に接続される暖房時膨張
機構入口管ｐ3 、室内熱交換器出口管ｐ4 、圧縮機吸込
管ｐ5 、室外熱交換器出口管ｐ6 、冷房時用膨張弁ｅ2
を介して室内熱交換器ｃの入口側に接続される冷房時膨
張機構入口管ｐ7 及び室内熱交換器入口管ｐ8が等間隔
で接続されている。In the eight-way valve d for switching the refrigerant flow path, a compressor discharge pipe p 1 is connected to one side portion on the circumference of a valve body d 1 in the form of a closed cylindrical container, and the opposite side portion is axially oriented. sequentially, the outdoor heat exchanger inlet pipe p 2, the heating time of the expansion mechanism inlet pipe p 3 which is connected to the inlet side of the outdoor heat exchanger b through the heating expansion valve e 1, the indoor heat exchanger toward the Outlet pipe p 4 , compressor suction pipe p 5 , outdoor heat exchanger outlet pipe p 6 , cooling expansion valve e 2
The cooling-time expansion mechanism inlet pipe p 7 and the indoor heat exchanger inlet pipe p 8 which are connected to the inlet side of the indoor heat exchanger c via are connected at equal intervals.
【０００４】弁本体ｄ1 内にはスライドバルブｆが設け
られる。スライドバルブｆの両端部に閉塞部ｆ′が形成
され、中央部２個所には隣接する管どうしを互いに連通
させるＵ字溝ｆ1 ，ｆ2 が形成されている。上記構成に
おいて、冷房時には、八方弁ｄ内のスライドバルブｆは
図６に示す冷房時位置にあり、圧縮機吐出管ｐ1 が弁本
体ｄ1 を介して室外熱交換器入口管ｐ2 に連通し、室内
熱交換器出口管ｐ4 と圧縮機吸込管ｐ5 とがＵ字溝ｆ1
を介して互いに連通し、かつ室外熱交換器出口管ｐ6 と
冷房時用膨張機構入口管ｐ7とがＵ字溝ｆ2 を介して互
いに連通している。このとき、暖房時膨張機構入口管ｐ
3 と室内熱交換器入口管ｐ8 が閉塞部ｆ′，ｆ′により
それぞれ閉塞され、したがって、冷媒は図５及び図６の
実線方向へ流れる。A slide valve f is provided in the valve body d 1 . Closed portions f'are formed at both ends of the slide valve f, and U-shaped grooves f 1 and f 2 are formed at two central portions so that adjacent pipes communicate with each other. In the above configuration, during cooling, the slide valve f in the eight-way valve d is in the cooling position shown in FIG. 6, and the compressor discharge pipe p 1 communicates with the outdoor heat exchanger inlet pipe p 2 via the valve body d 1. However, the indoor heat exchanger outlet pipe p 4 and the compressor suction pipe p 5 have a U-shaped groove f 1
The outdoor heat exchanger outlet pipe p 6 and the cooling expansion mechanism inlet pipe p 7 communicate with each other via the U-shaped groove f 2 . At this time, the heating expansion mechanism inlet pipe p
3 and the indoor heat exchanger inlet pipe p 8 are closed by the closing portions f ′ and f ′, respectively, so that the refrigerant flows in the solid line directions in FIGS. 5 and 6.
【０００５】また、暖房時には、スライドバルブｆは図
７に示す暖房時位置にあり、圧縮機吐出管ｐ1 が室内熱
交換器入口管ｐ8 に連通し、暖房時膨張機構入口管ｐ3
と室内熱交換器出口管ｐ4 、及び圧縮機吸込管ｐ5 と室
外熱交換器出口管ｐ6 とが互いに連通し、室外熱交換器
入口管ｐ2 及び冷房時用膨張機構入口管ｐ7 が閉塞され
る。したがって、暖房時には冷媒は図５及び図７の破線
の方向に流れる。During heating, the slide valve f is in the heating position shown in FIG. 7, the compressor discharge pipe p 1 communicates with the indoor heat exchanger inlet pipe p 8 , and the heating expansion mechanism inlet pipe p 3
And the indoor heat exchanger outlet pipe p 4 , and the compressor suction pipe p 5 and the outdoor heat exchanger outlet pipe p 6 communicate with each other, and the outdoor heat exchanger inlet pipe p 2 and the expansion mechanism inlet pipe p 7 for cooling are connected. Is blocked. Therefore, during heating, the refrigerant flows in the direction indicated by the broken lines in FIGS. 5 and 7.
【０００６】このように、冷房時または暖房時のいずれ
の場合にあっても、室外熱交換器ｂ、室内熱交換器ｃと
も常に同じ方向に冷媒を流す事が可能となり、被熱交換
媒体との相対的流れ方向を常にカウンターフローにする
事ができるので、熱交換器ｂ，ｃを冷房時、暖房時とも
高効率で使う事が可能となる。As described above, it is possible to always make the refrigerant flow in the same direction in both the outdoor heat exchanger b and the indoor heat exchanger c, whether it is during cooling or during heating, and as a medium to be exchanged with heat. Since the relative flow direction of the heat exchangers can always be set to the counter flow, the heat exchangers b and c can be used with high efficiency both during cooling and during heating.
【０００７】[0007]
【発明が解決しようとする課題】上記従来技術にあって
は、常時使用されない暖房時膨張機構入口管ｐ3 と冷房
時膨張機構入口管ｐ7 が冷媒流路切換用八方弁ｄに接続
されているので管路が多くなって装置が必然的に大型化
し、暖房運転時において除霜運転を行う場合には、四方
弁を用いた従来のヒートポンプ回路同様、暖房運転を中
断する必要がある。In the above prior art, the heating-time expansion mechanism inlet pipe p 3 and the cooling-time expansion mechanism inlet pipe p 7 which are not always used are connected to the refrigerant flow path switching eight-way valve d. Since the number of pipes is increased and the device inevitably becomes large in size, when performing the defrosting operation during the heating operation, it is necessary to interrupt the heating operation like the conventional heat pump circuit using the four-way valve.
【０００８】本発明は上記した点に着目し、冷媒流路の
切換用として六方弁を採用することにより管路数を少な
くして装置を簡略化し、且つ除霜運転の際の立上り時間
を短縮するとともに、除霜運転中でも室内熱交換器から
温風を継続して送ることを可能にしたものである。In the present invention, attention is paid to the above points, and by adopting a six-way valve for switching the refrigerant flow paths, the number of pipelines is reduced to simplify the apparatus, and the rise time in the defrosting operation is shortened. In addition, the hot air can be continuously sent from the indoor heat exchanger even during the defrosting operation.
【０００９】[0009]
【課題を解決するための手段】上記の目的を達成するた
め、本発明のヒートポンプ空調装置においては、冷媒流
路切換用六方弁の弁本体に、圧縮機吐出管と、室外熱交
換器入口管と、可逆型電動式膨張弁を介在させた室内熱
交換器の一側に対する入出兼用管と、室外熱交換器出口
管と、圧縮機吸込管と、室内熱交換器の他側に対する入
出兼用管とを接続し、圧縮機吐出管と室外熱交換器入口
管、室内熱交換器の一側に対する入出兼用管と室外熱交
換器出口管、および圧縮機吸込管と室内熱交換器の他側
に対する入出兼用管をそれぞれ連通させる冷房時位置
と、圧縮機吐出管と室内熱交換の他側に対する入出兼用
管、室外熱交換器入口管と室内熱交換器の一側に対する
入出兼用管、室外熱交換器出口管と圧縮機吸込管をそれ
ぞれ連通させる暖房時位置との間で移動可能なスライド
弁体を該弁本体に設ける構成を採用した。To achieve the above object, in a heat pump air conditioner of the present invention, a compressor discharge pipe and an outdoor heat exchanger inlet pipe are provided in a valve body of a refrigerant flow path switching hexagonal valve. And an inlet / outlet pipe for one side of the indoor heat exchanger with an intervening reversible electric expansion valve, an outdoor heat exchanger outlet pipe, a compressor suction pipe, and an inlet / outlet pipe for the other side of the indoor heat exchanger. And the compressor discharge pipe and the outdoor heat exchanger inlet pipe, the inlet / outlet pipe for one side of the indoor heat exchanger and the outdoor heat exchanger outlet pipe, and the compressor suction pipe and the other side of the indoor heat exchanger. The cooling position where the inlet and outlet pipes communicate with each other, the inlet and outlet pipes for the compressor discharge pipe and the other side of the indoor heat exchanger, the outdoor heat exchanger inlet pipe and the inlet and outlet pipes for the indoor heat exchanger on one side, the outdoor heat exchange Heating that connects the outlet pipe with the compressor suction pipe The movable slide valve body adopts the configuration in which the valve body between a position.
【００１０】また、本発明の除霜方法においては、冷媒
流路切換用六方弁の弁本体に、圧縮機吐出管と、室外熱
交換器入口管と、暖房時用電動式膨張弁を介在させた室
内熱交換器出口管と、圧縮機吸込管と、冷房時用電動式
膨張弁を介在させた室外熱交換器出口管と、室内熱交換
器入口管とを接続し、圧縮機吐出管と室外熱交換器入口
管、室内熱交換器出口管と圧縮機吸込管、および室外熱
交換器出口管と室内熱交換器入口管をそれぞれ連通させ
る冷房時位置と、圧縮機吐出管と室内熱交換器入口管、
室外熱交換器入口管と室内熱交換器出口管、および圧縮
機吸込管と室外熱交換器出口管をそれぞれ連通させる暖
房時位置との間で移動可能なスライド弁体を該弁本体に
設け、暖房運転時においてスライド弁体を冷房時位置へ
移動させると共に、冷房時用電動式膨張弁をほぼ全開に
して除霜運転を行なうことを特徴とし、更に、冷媒流路
切換用六方弁の弁本体に、圧縮機吐出管と、室外熱交換
器入口管と、可逆型電動式膨張弁を介在させた室内熱交
換器の一側に対する入出兼用管と、室外熱交換器出口管
と、圧縮機吸込管と、室内熱交換器の他側に対する入出
兼用管とを接続し、圧縮機吐出管と室外熱交換器入口
管、室内熱交換器の一側に対する入出兼用管と室外熱交
換器出口管、および圧縮機吸込管と室内熱交換器の他側
に対する入出兼用管をそれぞれ連通させる冷房時位置
と、圧縮機吐出管と室内熱交換の他側に対する入出兼用
管、室外熱交換器入口管と室内熱交換器の一側に対する
入出兼用管、室外熱交換器出口管と圧縮機吸込管をそれ
ぞれ連通させる暖房時位置との間で移動可能なスライド
弁体を該弁本体に設け、暖房運転時においてスライド弁
体を冷房時位置へ移動させると共に、可逆型電動式膨張
弁をほぼ全開にして除霜運転を行なうことを特徴とす
る。Further, in the defrosting method of the present invention, the compressor discharge pipe, the outdoor heat exchanger inlet pipe, and the electric expansion valve for heating are interposed in the valve body of the refrigerant flow path switching hexagonal valve. The indoor heat exchanger outlet pipe, the compressor suction pipe, the outdoor heat exchanger outlet pipe in which the electric expansion valve for cooling is interposed, and the indoor heat exchanger inlet pipe are connected, and the compressor discharge pipe is connected. The outdoor heat exchanger inlet pipe, the indoor heat exchanger outlet pipe and the compressor suction pipe, the outdoor heat exchanger outlet pipe and the indoor heat exchanger inlet pipe communicate with each other, and the compressor discharge pipe and the indoor heat exchange Inlet pipe,
An outdoor heat exchanger inlet pipe and an indoor heat exchanger outlet pipe, and a slide valve body movable between a heating position for communicating the compressor suction pipe and the outdoor heat exchanger outlet pipe are provided in the valve body, In the heating operation, the slide valve element is moved to the cooling position, and the cooling type electric expansion valve is almost fully opened to perform the defrosting operation. , A compressor discharge pipe, an outdoor heat exchanger inlet pipe, an inlet / outlet pipe for one side of the indoor heat exchanger with a reversible electric expansion valve interposed, an outdoor heat exchanger outlet pipe, and a compressor suction pipe. The pipe and the inlet / outlet pipe for the other side of the indoor heat exchanger are connected, the compressor discharge pipe and the outdoor heat exchanger inlet pipe, the inlet / outlet pipe for the one side of the indoor heat exchanger and the outdoor heat exchanger outlet pipe, And a pipe for both inlet and outlet of the compressor suction pipe and the other side of the indoor heat exchanger The cooling position to communicate with each other, the compressor discharge pipe and the inlet / outlet pipe for the other side of the indoor heat exchanger, the outdoor heat exchanger inlet pipe and the inlet / outlet pipe for the one side of the indoor heat exchanger, and the outdoor heat exchanger outlet pipe The valve body is provided with a slide valve body that is movable between the compressor suction pipes and the heating position to move the slide valve body to the cooling position during the heating operation, and at the same time, the reversible electric expansion valve. It is characterized in that the defrosting operation is performed by opening the valve almost fully.
【００１１】[0011]
【作用】暖房運転時と冷房運転時において、室外熱交換
器においては冷媒流は同一方向となり、除霜運転時にお
いて、高熱の高圧冷媒は室外熱交換器を通って室内熱交
換器に達する。In the heating operation and the cooling operation, the refrigerant flows in the outdoor heat exchanger in the same direction, and during the defrosting operation, the high-pressure high-pressure refrigerant reaches the indoor heat exchanger through the outdoor heat exchanger.
【００１２】[0012]
【実施例】図１の空調装置Ｘにおいて、１は圧縮機、２
は室外熱交換器、３は室内熱交換器、４は冷媒流路切換
用六方弁、５は冷房時用電動式膨張弁、６は暖房時用電
動式膨張弁である。電動式膨張弁５，６は制御信号によ
って動作するステップモータ駆動により開閉する（特開
昭６２−１２５２７１号）。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the air conditioner X of FIG. 1, 1 is a compressor and 2 is a compressor.
Is an outdoor heat exchanger, 3 is an indoor heat exchanger, 4 is a refrigerant flow path switching hexagonal valve, 5 is an electric expansion valve for cooling, and 6 is an electric expansion valve for heating. The electrically driven expansion valves 5 and 6 are opened and closed by driving a step motor that operates according to a control signal (Japanese Patent Laid-Open No. 1252771/1987).
【００１３】図２に示される如くに、冷媒流路切換用六
方弁４は円筒状の弁本体８を有し、その周方向の一側に
は圧縮機吐出管Ｐ1 と接続されるポートＡが形成され、
周方向の対向側には軸方向に延長する平滑摺動面９ａを
形成した弁座９が設けられていて、該弁座９には軸方向
に等間隔を有して順次に５個のポートＢ，Ｃ，Ｄ，Ｅ，
Ｆが形成されている。そして、ポートＢには室外熱交換
器入口管Ｐ2 が、ポートＣには暖房時用電動式膨張弁６
を介在させた室内熱交換器出口管Ｐ3 が、ポートＤには
圧縮機吸込管Ｐ4 が、ポートＥには冷房時用電動式膨張
弁５を介在させた室外熱交換器出口管Ｐ5 が、またポー
トＦには室内熱交換器入口管Ｐ6 がそれぞれ接続されて
いる。As shown in FIG. 2, the refrigerant flow path switching hexagonal valve 4 has a cylindrical valve body 8, and a port A connected to the compressor discharge pipe P 1 on one side in the circumferential direction. Is formed,
A valve seat 9 having a smooth sliding surface 9a extending in the axial direction is provided on the opposite sides in the circumferential direction, and the valve seat 9 has five ports arranged at equal intervals in the axial direction in sequence. B, C, D, E,
F is formed. The port B has an outdoor heat exchanger inlet pipe P 2 and the port C has a heating-use electric expansion valve 6
, An indoor heat exchanger outlet pipe P 3 with a port interposed therebetween, a compressor suction pipe P 4 with a port D, and an outdoor heat exchanger outlet pipe P 5 with a cooling-use electric expansion valve 5 interposed at a port E. However, the indoor heat exchanger inlet pipe P 6 is connected to the port F, respectively.
【００１４】六方弁４の弁本体８内には２個の摺動受圧
体１０，１０を連結杆１１に結合したピストン１２が設
けられ、該連結杆１１にスライド弁体１３が固定されて
いて、ピストン１２の移動によりスライド弁体１３は弁
座９上を摺動する。ピストン１２は、弁本体８の中心部
における高圧室Ｒ1 とその両側における圧力変換室
Ｒ2 ，Ｒ3 を区画する。Inside the valve body 8 of the six-way valve 4, there is provided a piston 12 in which two sliding pressure receiving bodies 10, 10 are connected to a connecting rod 11, and a slide valve body 13 is fixed to the connecting rod 11. The slide valve body 13 slides on the valve seat 9 by the movement of the piston 12. The piston 12 defines a high pressure chamber R 1 at the center of the valve body 8 and pressure conversion chambers R 2 and R 3 on both sides thereof.
【００１５】１４はスライド弁体切換用のパイロット電
磁弁であり、プランジャー１５に結合された弁体１６を
有し、ソレノイドコイル１７の非通電時においてコイル
バネ１８により付勢された弁体１６はその内腔１６ａを
介して低圧連通管１９を圧力変換室Ｒ3 に対する導管２
０に連通させると共に高圧導入管２１を圧力変換室Ｒ 2
に対する導管２２に連通させており、この状態で圧縮機
１を起動すると圧力変換室Ｒ2 に高圧が導入されてピス
トン１２ないしスライド弁体１３は圧力変換室Ｒ3 方向
に移動して固定される（図２）。Reference numeral 14 is a pilot power switch for switching the slide valve body.
It is a magnetic valve and has a valve element 16 connected to the plunger 15.
Has a coil when the solenoid coil 17 is not energized
The valve body 16 biased by the spring 18 has its inner cavity 16a
Through the low pressure communication pipe 19 to the pressure conversion chamber R3Conduit for
0, and the high pressure introduction pipe 21 is connected to the pressure conversion chamber R. 2
Is connected to the conduit 22 for the compressor.
When 1 is started, pressure conversion chamber R2High pressure is introduced into the pis
The ton 12 or slide valve body 13 is a pressure conversion chamber R3direction
And is fixed (Fig. 2).
【００１６】スライド弁体１３には、ポートＢ，Ｃ，
Ｄ，Ｅ，Ｆにおいて相隣接する２個のポートを連通させ
る２個の内腔１３ａ，１３ｂが形成されており、図２の
状態においては内腔１３ａがポートＢ，Ｃを連通させる
と共に、内腔１３ｂがポートＤ，Ｅを連通させ、ポート
Ａからの高圧は高圧室Ｒ1 を通ってポートＦに流れ込
み、冷媒が図１の点線の経路で循環する暖房運転位置と
なる。The slide valve body 13 has ports B, C,
Two lumens 13a and 13b for communicating two adjacent ports in D, E, and F are formed, and in the state of FIG. 2, the lumen 13a allows the ports B and C to communicate with each other. The cavity 13b makes the ports D and E communicate with each other, the high pressure from the port A flows into the port F through the high pressure chamber R 1 , and becomes the heating operation position where the refrigerant circulates in the path shown by the dotted line in FIG.
【００１７】パイロット電磁弁１４のソレノイドコイル
１７に通電しつつ、空調装置Ｘを起動すると、プランジ
ャー１５が吸引されることにより弁体１６が移動して内
腔１６ａを介して低圧連通管１９を圧力変換室Ｒ2 に対
する導管２２に連通させると共に高圧導入管２１を圧力
変換室Ｒ3 に対する導管２０に連通させるので、圧力変
換室Ｒ3 に高圧が導入されてピストン１２ないしスライ
ド弁体１３は圧力変換室Ｒ2 方向に移動し、内腔１３ａ
がポートＣ，Ｄを連通させると共に、内腔１３ｂがポー
トＥ，Ｆを連通させるので（図３参照）、ポートＡから
の高圧は高圧室Ｒ1 を通ってポートＢに流入し、冷媒が
図１の実線の経路で循環する冷房運転位置となる。図１
の構造では、室外熱交換器２及び室内熱交換器３におけ
る冷媒の流れ方向は、冷房時と暖房時で変化することな
く、常に同一方向であり、熱交換器の効率のよい使用が
できる。When the air conditioner X is activated while the solenoid coil 17 of the pilot solenoid valve 14 is energized, the plunger 15 is attracted to move the valve body 16 to move the low pressure communication pipe 19 through the lumen 16a. since communicating the high-pressure supply pipe 21 to the conduit 20 for the pressure transducer chamber R 3 together to communicate with the conduit 22 to the pressure transducer chamber R 2, a high pressure is introduced pistons 12 to slide valve body 13 to the pressure transducer chamber R 3 is pressure Moves in the direction of the conversion chamber R 2 and the lumen 13a
While communicating the ports C and D, and the lumen 13b communicating the ports E and F (see FIG. 3), the high pressure from the port A flows into the port B through the high pressure chamber R 1 and the refrigerant is discharged. The cooling operation position circulates along the route indicated by the solid line 1. FIG.
In the above structure, the flow directions of the refrigerant in the outdoor heat exchanger 2 and the indoor heat exchanger 3 do not change between cooling and heating, and are always in the same direction, so that the heat exchanger can be used efficiently.
【００１８】暖房運転時において、室外熱交換器２に霜
が付着した場合には、六方弁４のスライド弁体１３を図
３の冷房運転位置に移行させると共に冷房時用電動式膨
張弁５を全開にし、且つ暖房時用電動式膨張弁６を適宜
に開いた除霜運転とし、室外熱交換器２に高熱の高圧冷
媒を送って除霜すると共に室内熱交換器３にも高圧冷媒
を送り、室内熱交換器から温風を送風して暖房状態が中
断されないようにする。また、除霜運転切り換え時にお
いて、暖房運転の際において使用していた回路を冷媒が
逆流する事なくそのまま使用するので立ち上り時間を短
縮することが出来る。When frost adheres to the outdoor heat exchanger 2 during the heating operation, the slide valve body 13 of the six-way valve 4 is moved to the cooling operation position shown in FIG. 3 and the cooling-use electric expansion valve 5 is turned on. The defrosting operation is performed by fully opening and heating the electric expansion valve 6 for heating appropriately to send high-pressure high-pressure refrigerant to the outdoor heat exchanger 2 for defrosting and also send high-pressure refrigerant to the indoor heat exchanger 3. , Warm air is blown from the indoor heat exchanger so that the heating state is not interrupted. Further, when switching the defrosting operation, the circuit used during the heating operation is used as it is without the backflow of the refrigerant, so that the start-up time can be shortened.
【００１９】図４の空調装置Ｙにおいて、冷媒流路切換
用六方弁４の弁本体８には前記空調装置Ｘと同様に６個
のポートＡ，Ｂ，Ｃ，Ｄ，Ｅ，Ｆが形成され、ポートＡ
には圧縮機吐出管Ｐ1 が、ポートＢには室外熱交換器入
口管Ｐ2 が、ポートＣには可逆型電動式膨張弁６′を介
在させた室内熱交換器入出兼用管Ｐ3 ′が、ポートＤに
は室外熱交換器出口管Ｐ5 が、ポートＥには圧縮機吸込
管Ｐ4 が、またポートＦには室内熱交換器入出兼用管Ｐ
6 ′がそれぞれ接続されている。In the air conditioner Y of FIG. 4, six ports A, B, C, D, E and F are formed in the valve body 8 of the refrigerant flow path switching six-way valve 4 as in the case of the air conditioner X. , Port A
Is a compressor discharge pipe P 1 , port B is an outdoor heat exchanger inlet pipe P 2 , and port C is an indoor heat exchanger inlet / outlet pipe P 3 ′ with a reversible electric expansion valve 6 ′ interposed. However, the port D has an outdoor heat exchanger outlet pipe P 5 , the port E has a compressor suction pipe P 4 , and the port F has an indoor heat exchanger inlet / outlet pipe P 5.
6 'are connected respectively.
【００２０】従って、暖房運転時には冷媒が図４の点線
の経路で循環し、冷房運転時には実線の経路で循環す
る。空調装置Ｙでは、室内熱交換器３における冷媒流の
方向が暖房時と冷房時において逆転するので、その分だ
け効率の面で劣るが、膨張弁が１個で済むので省スペー
ス、省コストの面で優れ、特に、除霜運転時において暖
房運転から冷房運転に切り換えた際において、被除霜対
象物となる室外熱交換器２内における冷媒の流れ方向が
一定であるので、冷媒の逆流に基因する圧力変動の発生
を防止し得ると共に、除霜運転の立ち上がりを迅速化し
得る点については、前記空調装置Ｘの場合と同様であ
り、この場合においても電動式膨張弁６′を全開にする
ので室内熱交換器３において温風を継続して送ることが
できる。Therefore, during the heating operation, the refrigerant circulates along the dotted line route in FIG. 4, and during the cooling operation, the refrigerant circulates along the solid line route. In the air conditioner Y, the direction of the refrigerant flow in the indoor heat exchanger 3 is reversed during heating and during cooling, so the efficiency is inferior accordingly, but since only one expansion valve is required, space and cost are saved. In terms of the reverse flow of the refrigerant, in particular, when the heating operation is switched to the cooling operation during the defrosting operation, the flow direction of the refrigerant in the outdoor heat exchanger 2 that is the object to be defrosted is constant. It is the same as the case of the air conditioner X in that it is possible to prevent the occurrence of the pressure fluctuation due to it and to speed up the start of the defrosting operation, and in this case as well, the electric expansion valve 6'is fully opened. Therefore, warm air can be continuously sent in the indoor heat exchanger 3.
【００２１】[0021]
【発明の効果】本発明においては、冷媒流路切換用とし
て六方弁を用いているので、冷媒流路の配管を少なくし
て構造を簡略化しつつ、室外熱交換器における冷媒流の
方向を冷，暖房運転にかかわらず一定としているので、
熱交換器の効率的な使用が達成される。According to the present invention, since the six-way valve is used for switching the refrigerant flow passage, the refrigerant flow direction in the outdoor heat exchanger is cooled while the piping of the refrigerant flow passage is reduced to simplify the structure. ， Because it is constant regardless of heating operation,
Efficient use of the heat exchanger is achieved.
【００２２】また、除霜運転時においては、暖房運転時
における冷媒管路を冷媒が逆流することなくそのまま使
用し得ると共に、室外熱交換器における冷媒流方向が暖
房運転時と同一であるので、除霜運転の立ち上りを迅速
化し、かつ、除霜運転中でも暖房運転を可能とする効果
がある。In the defrosting operation, the refrigerant can be used as it is in the heating operation without backflow in the refrigerant pipeline, and the direction of the refrigerant flow in the outdoor heat exchanger is the same as in the heating operation. This is effective in speeding up the start of defrosting operation and enabling heating operation even during defrosting operation.
【図１】本発明にかかるヒートポンプ空調装置の管路接
続図である。FIG. 1 is a pipe connection diagram of a heat pump air conditioner according to the present invention.
【図２】冷媒流路切換用六方弁の暖房状態における断面
図である。FIG. 2 is a cross-sectional view of a refrigerant flow path switching six-way valve in a heated state.
【図３】同上の冷房状態における断面図である。[Fig. 3] Fig. 3 is a cross-sectional view in the cooling state of the above.
【図４】本発明にかかるヒートポンプ空調装置の他の構
造を示す管路接続図である。FIG. 4 is a pipeline connection diagram showing another structure of the heat pump air conditioner according to the present invention.
【図５】従来のヒートポンプ冷凍サイクルの管路接続図
である。FIG. 5 is a pipe connection diagram of a conventional heat pump refrigeration cycle.
【図６】同上の冷媒流路切換用八方弁の冷房状態におけ
る断面図である。FIG. 6 is a cross-sectional view of the above-described refrigerant flow path switching eight-way valve in a cooling state.
【図７】同上の暖房状態の断面図である。FIG. 7 is a cross-sectional view of the above heating state.
Ｘ，Ｙ 空調装置 Ａ，Ｂ，Ｃ，Ｄ，Ｅ，Ｆ ポート １ 圧縮機 ２ 室外熱交換器 ３ 室内熱交換器 ４ 冷媒流路切換用六方弁 ５ 冷房時用電動式膨張弁 ６ 暖房時用電動式膨張弁 ６′ 可逆型電動式膨張弁 ８ 弁本体 １３ スライド弁体 Ｐ1 圧縮機吐出管 Ｐ2 室外熱交換器入口管 Ｐ3 室内熱交換器出口管 Ｐ4 圧縮機吸込管 Ｐ5 室外熱交換器出口管 Ｐ6 室内熱交換器入口管 Ｐ3 ′，Ｐ6 ′ 室内熱交換器入出兼用管X, Y Air conditioner A, B, C, D, E, F Port 1 Compressor 2 Outdoor heat exchanger 3 Indoor heat exchanger 4 Refrigerant flow path switching hexagonal valve 5 Cooling electric expansion valve 6 For heating Electric expansion valve 6'Reversible electric expansion valve 8 Valve body 13 Slide valve body P 1 Compressor discharge pipe P 2 Outdoor heat exchanger inlet pipe P 3 Indoor heat exchanger outlet pipe P 4 Compressor suction pipe P 5 Outdoor Heat exchanger outlet pipe P 6 Indoor heat exchanger inlet pipe P 3 ′, P 6 ′ Indoor heat exchanger inlet / outlet pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 青木 忠 埼玉県狭山市笹井535 株式会社鷺宮製作 所狭山事業所内 (72)発明者 笠井 宣 埼玉県狭山市笹井535 株式会社鷺宮製作 所狭山事業所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Aoki 535 Sasaimiya Co., Ltd., Sayama City, Saitama Prefecture Samiya Co., Ltd. Sayama Plant (72) Inventor Nobu Kasai 535 Sasai, Sayama City, Saitama Plant Sayama Co., Ltd. Sayama Plant
Claims (3)
機吐出管と、室外熱交換器入口管と、可逆型電動式膨張
弁を介在させた室内熱交換器の一側に対する入出兼用管
と、室外熱交換器出口管と、圧縮機吸込管と、室内熱交
換器の他側に対する入出兼用管とを接続し、圧縮機吐出
管と室外熱交換器入口管、室内熱交換器の一側に対する
入出兼用管と室外熱交換器出口管、および圧縮機吸込管
と室内熱交換器の他側に対する入出兼用管をそれぞれ連
通させる冷房時位置と、圧縮機吐出管と室内熱交換の他
側に対する入出兼用管、室外熱交換器入口管と室内熱交
換器の一側に対する入出兼用管、室外熱交換器出口管と
圧縮機吸込管をそれぞれ連通させる暖房時位置との間で
移動可能なスライド弁体を該弁本体に設けたことを特徴
とするヒートポンプ空調装置。1. A refrigerant main body of a six-way valve for switching a flow path, a compressor discharge pipe, an outdoor heat exchanger inlet pipe, and an inlet / outlet with respect to one side of an indoor heat exchanger in which a reversible electric expansion valve is interposed. The combined pipe, the outdoor heat exchanger outlet pipe, the compressor suction pipe, and the inlet / outlet pipe for the other side of the indoor heat exchanger are connected, and the compressor discharge pipe, the outdoor heat exchanger inlet pipe, and the indoor heat exchanger are connected. The inlet / outlet pipe for one side and the outlet pipe for the outdoor heat exchanger, and the compressor suction pipe and the inlet / outlet pipe for the other side of the indoor heat exchanger are in communication at the cooling position, and the compressor discharge pipe and the indoor heat exchange It can be moved between the inlet / outlet pipe for the other side, the outdoor heat exchanger inlet pipe and the inlet / outlet pipe for one side of the indoor heat exchanger, the outdoor heat exchanger outlet pipe and the heating position that makes the compressor suction pipe communicate with each other. Heat pump having a simple slide valve body provided in the valve body Air conditioner.
機吐出管と、室外熱交換器入口管と、暖房時用電動式膨
張弁を介在させた室内熱交換器出口管と、圧縮機吸込管
と、冷房時用電動式膨張弁を介在させた室外熱交換器出
口管と、室内熱交換器入口管とを接続し、圧縮機吐出管
と室外熱交換器入口管、室内熱交換器出口管と圧縮機吸
込管、および室外熱交換器出口管と室内熱交換器入口管
をそれぞれ連通させる冷房時位置と、圧縮機吐出管と室
内熱交換器入口管、室外熱交換器入口管と室内熱交換器
出口管、および圧縮機吸込管と室外熱交換器出口管をそ
れぞれ連通させる暖房時位置との間で移動可能なスライ
ド弁体を該弁本体に設け、 暖房運転時においてスライド弁体を冷房時位置へ移動さ
せると共に、冷房時用電動式膨張弁をほぼ全開にして除
霜運転を行なうことを特徴とするヒートポンプ空調装置
の除霜方法。2. A compressor discharge pipe, an outdoor heat exchanger inlet pipe, an indoor heat exchanger outlet pipe having a heating-use electric expansion valve interposed in a valve body of a refrigerant flow path switching hexagonal valve, The compressor suction pipe, the outdoor heat exchanger outlet pipe with an electric expansion valve for cooling installed, and the indoor heat exchanger inlet pipe are connected to each other, and the compressor discharge pipe, the outdoor heat exchanger inlet pipe, and the indoor heat are connected. A cooling position that connects the exchanger outlet pipe and the compressor suction pipe, and the outdoor heat exchanger outlet pipe and the indoor heat exchanger inlet pipe, respectively, and the compressor discharge pipe, the indoor heat exchanger inlet pipe, and the outdoor heat exchanger inlet A slide valve body is provided in the valve body, which is movable between a pipe and an indoor heat exchanger outlet pipe, and a compressor suction pipe and an outdoor heat exchanger outlet pipe, which communicate with each other. The valve body is moved to the cooling position and the electric expansion valve for cooling is almost fully opened. Defrosting method of a heat pump air conditioning system, characterized in that to perform the defrosting operation.
機吐出管と、室外熱交換器入口管と、可逆型電動式膨張
弁を介在させた室内熱交換器の一側に対する入出兼用管
と、室外熱交換器出口管と、圧縮機吸込管と、室内熱交
換器の他側に対する入出兼用管とを接続し、圧縮機吐出
管と室外熱交換器入口管、室内熱交換器の一側に対する
入出兼用管と室外熱交換器出口管、および圧縮機吸込管
と室内熱交換器の他側に対する入出兼用管をそれぞれ連
通させる冷房時位置と、圧縮機吐出管と室内熱交換の他
側に対する入出兼用管、室外熱交換器入口管と室内熱交
換器の一側に対する入出兼用管、室外熱交換器出口管と
圧縮機吸込管をそれぞれ連通させる暖房時位置との間で
移動可能なスライド弁体を該弁本体に設け、 暖房運転時においてスライド弁体を冷房時位置へ移動さ
せると共に、可逆型電動式膨張弁をほぼ全開にして除霜
運転を行なうことを特徴とするヒートポンプ空調装置の
除霜方法。3. A refrigerant main body of a six-way valve for switching a flow path, a compressor discharge pipe, an outdoor heat exchanger inlet pipe, and an inlet / outlet to / from one side of an indoor heat exchanger in which a reversible electric expansion valve is interposed. The combined pipe, the outdoor heat exchanger outlet pipe, the compressor suction pipe, and the inlet / outlet pipe for the other side of the indoor heat exchanger are connected, and the compressor discharge pipe, the outdoor heat exchanger inlet pipe, and the indoor heat exchanger are connected. The inlet / outlet pipe for one side and the outlet pipe for the outdoor heat exchanger, and the compressor suction pipe and the inlet / outlet pipe for the other side of the indoor heat exchanger are in communication at the cooling position, and the compressor discharge pipe and the indoor heat exchange It can be moved between the inlet / outlet pipe for the other side, the outdoor heat exchanger inlet pipe and the inlet / outlet pipe for one side of the indoor heat exchanger, the outdoor heat exchanger outlet pipe and the heating position that makes the compressor suction pipe communicate with each other. A slide valve body is installed on the valve body and slides during heating operation. Moves the body to a cooling time position, the defrosting method of a heat pump air-conditioning system and performing defrosting operation in the substantially fully reversible type electric expansion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6314499A JPH08170864A (en) | 1994-12-19 | 1994-12-19 | Heat pump air conditioner and defrosting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6314499A JPH08170864A (en) | 1994-12-19 | 1994-12-19 | Heat pump air conditioner and defrosting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08170864A true JPH08170864A (en) | 1996-07-02 |
Family
ID=18054035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6314499A Withdrawn JPH08170864A (en) | 1994-12-19 | 1994-12-19 | Heat pump air conditioner and defrosting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08170864A (en) |
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| CN103629868A (en) * | 2012-08-28 | 2014-03-12 | 陈君 | High-energy-efficiency-ratio household air conditioner |
| JP2014081159A (en) * | 2012-10-17 | 2014-05-08 | Denso Corp | Refrigeration cycle device |
| US10253992B2 (en) * | 2014-10-21 | 2019-04-09 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Multi-split air-conditioner and outdoor unit system thereof |
| US20170191680A1 (en) * | 2015-06-01 | 2017-07-06 | Gd Midea Heating & Ventilating Equipment Co., Ltd. | Air-conditioning outdoor unit and air conditioner |
| US10845099B2 (en) | 2016-02-22 | 2020-11-24 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus with path switching circuit |
| JP2021055848A (en) * | 2016-09-12 | 2021-04-08 | 株式会社不二工機 | Hexagonal changeover valve |
| US10837680B2 (en) | 2016-09-23 | 2020-11-17 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus |
| US11365914B2 (en) | 2018-05-11 | 2022-06-21 | Mitsubishi Electric Corporation | Refrigeration cycle apparatus |
| WO2020039888A1 (en) | 2018-08-23 | 2020-02-27 | 株式会社不二工機 | Flow passage switching valve |
| WO2020039889A1 (en) | 2018-08-23 | 2020-02-27 | 株式会社不二工機 | Flow passage switching valve |
| JP2020070902A (en) * | 2018-11-01 | 2020-05-07 | 株式会社不二工機 | Channel switch valve |
| WO2020110841A1 (en) | 2018-11-29 | 2020-06-04 | 株式会社不二工機 | Flow path switching valve |
| WO2020110840A1 (en) | 2018-11-29 | 2020-06-04 | 株式会社不二工機 | Flow path switching valve |
| CN113167397A (en) * | 2018-11-29 | 2021-07-23 | 株式会社不二工机 | Flow path switching valve |
| WO2020137191A1 (en) | 2018-12-25 | 2020-07-02 | 株式会社不二工機 | Flow path switching valve |
| JP2020101256A (en) * | 2018-12-25 | 2020-07-02 | 株式会社不二工機 | Flow passage switching valve |
| CN110530074A (en) * | 2019-08-30 | 2019-12-03 | 杭州师范大学钱江学院 | A kind of six-way valve, heat-exchange system and its heat change method based on six-way valve |
| WO2022224436A1 (en) | 2021-04-23 | 2022-10-27 | 三菱電機株式会社 | Air conditioner |
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