JPS62299659A - Heat pump type air conditioner - Google Patents
Heat pump type air conditionerInfo
- Publication number
- JPS62299659A JPS62299659A JP61143341A JP14334186A JPS62299659A JP S62299659 A JPS62299659 A JP S62299659A JP 61143341 A JP61143341 A JP 61143341A JP 14334186 A JP14334186 A JP 14334186A JP S62299659 A JPS62299659 A JP S62299659A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- heat exchanger
- capillary tube
- pump type
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 10
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (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】
３、発明の詳細な説明
産業上の利用分野
本発明は、ヒートポンプ式空気調和機の暖房低温時の圧
縮機液圧縮防止装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION 3. Detailed Description of the Invention Field of Industrial Application The present invention relates to a compressor liquid compression prevention device during heating of a heat pump air conditioner at low temperatures.
従来の技術
従来、ヒートポンプ式空気調和機の冷媒制御回路は第２
図に示すように、圧縮機１、四方弁２、室外熱交換器３
、冷房暖房共用キャピラリチューブ４、逆止弁６、暖房
用キャピラリーチューブ６、室内熱交換器７を順次接続
した閉回路から構成されていた。そして、実線矢印は冷
房時の冷媒回路であシ、点線矢印は暖房時の冷媒回路を
示している。Conventional technology Conventionally, the refrigerant control circuit of a heat pump type air conditioner is
As shown in the figure, compressor 1, four-way valve 2, outdoor heat exchanger 3
, a capillary tube 4 for cooling and heating, a check valve 6, a capillary tube 6 for heating, and an indoor heat exchanger 7 were connected in this order. The solid arrows indicate refrigerant circuits during cooling, and the dotted arrows indicate refrigerant circuits during heating.
発明が解決しようとする問題点
こうした従来の冷媒回路では、暖房時に室外温度が極度
に低くなると、蒸発器として作用する室外熱交換器３で
の蒸発効果が低下し、冷暖房共用キャピラリーチューブ
４および暖房用キャピラリーチューブ６で減圧された液
冷媒が、暖房時蒸発器として働く室外熱交換器３で蒸発
しきれずに液冷媒となって、圧縮機１に戻るために、液
圧縮の原因となり圧縮機の寿命を短かくするという問題
点があった。Problems to be Solved by the Invention In such conventional refrigerant circuits, when the outdoor temperature becomes extremely low during heating, the evaporation effect in the outdoor heat exchanger 3, which acts as an evaporator, decreases, and the capillary tube 4 used for cooling and heating and the heating The liquid refrigerant whose pressure has been reduced in the capillary tube 6 is not completely evaporated in the outdoor heat exchanger 3, which functions as an evaporator during heating, and returns to the compressor 1, which causes liquid compression and causes the compressor to evaporate. The problem was that it shortened its lifespan.
問題点を解決するだめの手段 この問題点を解決するために本発明は、圧縮機。A foolproof way to solve problems In order to solve this problem, the present invention provides a compressor.
四方弁、室外熱交換器、冷暖房用キャピラリチューブと
暖房用キャピラリチューブよりなる減圧機構、室内熱交
換器を連接したヒートポンプ式の冷凍サイクルと、前記
減圧機構とは別に前記減圧機構と前記室外熱交換器との
間に室外気温が一定の温度以下になったときに閉となる
電磁弁と、この電磁弁と並列に減圧機構を設けたもので
ある。A four-way valve, an outdoor heat exchanger, a pressure reduction mechanism consisting of a cooling/heating capillary tube and a heating capillary tube, a heat pump type refrigeration cycle in which an indoor heat exchanger is connected, and the pressure reduction mechanism and the outdoor heat exchanger separate from the pressure reduction mechanism. A solenoid valve that closes when the outdoor temperature falls below a certain temperature is installed between the solenoid valve and the solenoid valve, and a pressure reducing mechanism is installed in parallel with this solenoid valve.
作 用
この構成によシ、暖房時室外の気温が極度に下った場合
電磁弁が閉となシ、冷媒は通常暖房時より更に減圧され
冷媒流量は通常暖房時と比較して大幅に減ることとなる
。Effect: With this configuration, when the outdoor temperature drops extremely during heating, the solenoid valve will not close, and the refrigerant will be further depressurized than during normal heating, and the refrigerant flow rate will be significantly reduced compared to normal heating. becomes.
実施例
以下本発明による一実施例を第１図にもとづいて説明す
る。圧縮機１１、冷房時と暖房時とで冷媒流路を切替え
る四方弁１２、室外熱交換器１３、減圧機構である冷暖
房共用キャピラリーチューブ１４と、暖房用キャピラリ
ーチューブ１５、冷房時に通となる逆止弁１６、室内熱
交換器１７、および室外気温センサー２ｏにより開閉す
る電磁弁１９と前記電磁弁１９と並列に設けた減圧機構
であるキャピラリーチューブ１８とから構成され、冷媒
は冷房時実線矢印回路を、暖房時は点線矢印回路を流れ
ることになる。EXAMPLE An example of the present invention will be described below with reference to FIG. A compressor 11, a four-way valve 12 that switches the refrigerant flow path between cooling and heating, an outdoor heat exchanger 13, a capillary tube 14 for cooling and heating that is a pressure reduction mechanism, a capillary tube 15 for heating, and a check that opens during cooling. It is composed of a valve 16, an indoor heat exchanger 17, a solenoid valve 19 that is opened and closed by an outdoor temperature sensor 2o, and a capillary tube 18 that is a pressure reducing mechanism installed in parallel with the solenoid valve 19. , during heating, it flows through the dotted arrow circuit.
この構成において、通常暖房時は電磁弁１９は開となっ
ており、冷房暖房共用キャピラリーチューブ１６および
暖房用キャピラリーチューブ１４で減圧された冷媒液は
、暖房時蒸発器として作用する室外熱交換器１３で蒸発
して圧縮器１１へ戻る。さらに、室外気温が極度に低下
すると室外気温センサー２０からの信号によシミ磁弁１
９が閉となり、暖房用キャピラリーチューブ１４を出た
冷媒は、前記電磁弁１９と並列に設けであるキャピラリ
ーチューブ１８を通って室外熱交換器に入る。この結果
冷房暖房共用キャピラリチューブ１５と暖房用キャピラ
リチューブ１４と、キャピラリチューブ１８とによって
極度に低下した外気温度に対応した減圧が行なわれ、冷
媒流量を制御することによって、室外熱交換器１３で蒸
発する。In this configuration, the solenoid valve 19 is normally open during heating, and the refrigerant liquid whose pressure is reduced in the cooling/heating common capillary tube 16 and the heating capillary tube 14 is transferred to the outdoor heat exchanger 13 which acts as an evaporator during heating. is evaporated and returned to the compressor 11. Furthermore, when the outdoor temperature drops extremely, a signal from the outdoor temperature sensor 20 causes the stain magnetic valve 1 to
9 is closed, and the refrigerant that has exited the heating capillary tube 14 passes through the capillary tube 18, which is provided in parallel with the solenoid valve 19, and enters the outdoor heat exchanger. As a result, the cooling/heating common capillary tube 15, the heating capillary tube 14, and the capillary tube 18 reduce the pressure in response to the extremely low outside air temperature, and by controlling the refrigerant flow rate, evaporation occurs in the outdoor heat exchanger 13. do.
発明の効果
このように、本発明は暖房時室外気温が低下した時シて
減圧機能が増加する様にしたことにより、冷媒流量が減
り、暖房時蒸発器として作用する室外熱交換器において
、外気温度低下による熱交換処理能力が低下しても冷媒
が完全に蒸発し、圧縮機への液戻りを防止し、液圧縮を
することがないから、圧縮機の耐久性が向上するという
効果を有する。さらに、減圧機能が増加する事により、
凝縮圧力すなわち室内熱交換器における圧力が上昇し、
凝縮温度も上昇する。このことにより、室内気温と室内
熱交換器との温度差が大きくなシ能力の増加が望めると
いう利点を有する。Effects of the Invention As described above, the present invention increases the pressure reduction function when the outdoor temperature drops during heating, thereby reducing the refrigerant flow rate and reducing the amount of outside air in the outdoor heat exchanger that functions as an evaporator during heating. Even if the heat exchange processing capacity decreases due to a drop in temperature, the refrigerant completely evaporates, preventing the liquid from returning to the compressor, and since there is no liquid compression, the durability of the compressor is improved. . Furthermore, by increasing the decompression function,
The condensing pressure, i.e. the pressure in the indoor heat exchanger, increases;
The condensing temperature also increases. This has the advantage that the temperature difference between the indoor air temperature and the indoor heat exchanger can be increased and the capacity can be increased.
第１図は本発明の一実施例のと一トポンプ式空気調和機
の冷凍サイクル図、第２図は従来例のヒートポンプ式空
気調和機の冷凍サイクル図である。
１１・・・・・・圧縮機、１８・・・・・・キャピラリ
ーチューブ、１９・・・・・・電磁弁、２０・・・・・
・室外気温センサー。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ｔｑ
−ｔｒ、猛者
第２図FIG. 1 is a refrigeration cycle diagram of a heat pump type air conditioner according to an embodiment of the present invention, and FIG. 2 is a refrigeration cycle diagram of a conventional heat pump type air conditioner. 11... Compressor, 18... Capillary tube, 19... Solenoid valve, 20...
・Outdoor temperature sensor. Name of agent: Patent attorney Toshio Nakao and 1 other persontq
-tr, fierce figure 2
Claims (1)
ューブと暖房用キャピラリチューブよりなる減圧機構、
室内熱交換器を連設したヒートポンプ式の冷凍サイクル
と、前記減圧機構と前記室外熱交換器との間に、室外気
温が一定の温度以下になったときに閉となる電磁弁と、
この電磁弁と並列に減圧機構とを設けたヒートポンプ式
空気調和機。A pressure reducing mechanism consisting of a compressor, a four-way valve, an outdoor heat exchanger, a capillary tube for cooling and heating, and a capillary tube for heating.
a heat pump type refrigeration cycle with an indoor heat exchanger connected thereto, and a solenoid valve that is disposed between the pressure reducing mechanism and the outdoor heat exchanger and that closes when the outdoor temperature falls below a certain temperature;
This heat pump type air conditioner has a pressure reducing mechanism installed in parallel with this solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61143341A JPS62299659A (en) | 1986-06-19 | 1986-06-19 | Heat pump type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61143341A JPS62299659A (en) | 1986-06-19 | 1986-06-19 | Heat pump type air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62299659A true JPS62299659A (en) | 1987-12-26 |
Family
ID=15336534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61143341A Pending JPS62299659A (en) | 1986-06-19 | 1986-06-19 | Heat pump type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62299659A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63234060A (en) * | 1987-01-02 | 1988-09-29 | フイリップス・ペトロリウム・カンパニー | Fiber reinforced plastic composite material |
| JPH03160276A (en) * | 1989-11-20 | 1991-07-10 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JPH03199448A (en) * | 1989-12-27 | 1991-08-30 | J F Corp:Kk | Ceramic-containing knitted fabric and production thereof |
| JP2005121361A (en) * | 2003-10-17 | 2005-05-12 | Lg Electronics Inc | Controller and method for controlling degree of superheat in heat pump system |
-
1986
- 1986-06-19 JP JP61143341A patent/JPS62299659A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63234060A (en) * | 1987-01-02 | 1988-09-29 | フイリップス・ペトロリウム・カンパニー | Fiber reinforced plastic composite material |
| JPH03160276A (en) * | 1989-11-20 | 1991-07-10 | Matsushita Electric Ind Co Ltd | Air conditioner |
| JPH03199448A (en) * | 1989-12-27 | 1991-08-30 | J F Corp:Kk | Ceramic-containing knitted fabric and production thereof |
| JP2005121361A (en) * | 2003-10-17 | 2005-05-12 | Lg Electronics Inc | Controller and method for controlling degree of superheat in heat pump system |
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