JPS58204993A - Refrigerator - Google Patents
RefrigeratorInfo
- Publication number
- JPS58204993A JPS58204993A JP8902482A JP8902482A JPS58204993A JP S58204993 A JPS58204993 A JP S58204993A JP 8902482 A JP8902482 A JP 8902482A JP 8902482 A JP8902482 A JP 8902482A JP S58204993 A JPS58204993 A JP S58204993A
- Authority
- JP
- Japan
- Prior art keywords
- discharge hole
- compressor
- intermediate discharge
- bypass circuit
- shape memory
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/10—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
- F04C28/16—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using lift valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は容量制御可能な圧縮機を搭載した冷凍装置に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigeration system equipped with a compressor whose capacity can be controlled.
従来、圧縮機のシリンダに中間吐出孔を設けて、この中
間吐出孔を開閉する開閉弁によって圧縮機の容量を制御
するものがあった。しかしこの場合、開閉弁の開閉は、
開閉弁の背後にかかる冷媒圧力を電磁弁等で制御してい
た。したがって中間吐出孔から圧縮機の吸入側へバイパ
スして容量を制御２ページ
する場合は電磁弁が必要であり、容量制御装置としては
高価なものとなっていた。BACKGROUND ART Conventionally, a cylinder of a compressor is provided with an intermediate discharge hole, and the capacity of the compressor is controlled by an on-off valve that opens and closes the intermediate discharge hole. However, in this case, the opening and closing of the on-off valve is
The refrigerant pressure applied behind the on-off valve was controlled by a solenoid valve. Therefore, when controlling the capacity by bypassing the intermediate discharge hole to the suction side of the compressor, a solenoid valve is required, making the capacity control device expensive.
本発明は上記従来の欠点を除去するものである。The present invention eliminates the above-mentioned conventional drawbacks.
そのための構成として、本発明は、圧縮機、熱源側熱交
換器、減圧器、利用側熱交換器を順次連結して冷凍サイ
クルを形成するとともに上記圧縮機のシリンダに吸入孔
、吐出孔および中間吐出孔を設け、上記中間吐出孔と上
記圧縮機の吸入側とを連通ずるバイパス回路を設け、上
記バイパス回路を開閉する開閉弁を設け、上記開閉弁を
駆動する形状記憶合金を設けたものである。As a configuration for this purpose, the present invention connects a compressor, a heat source side heat exchanger, a pressure reducer, and a user side heat exchanger in order to form a refrigeration cycle, and also provides a cylinder of the compressor with a suction hole, a discharge hole, and an intermediate A discharge hole is provided, a bypass circuit is provided that communicates the intermediate discharge hole with the suction side of the compressor, an on-off valve is provided to open and close the bypass circuit, and a shape memory alloy is provided to drive the on-off valve. be.
以下本発明の一実施例を図面とともに説明する。An embodiment of the present invention will be described below with reference to the drawings.
１は圧縮機、２は熱源側熱交換器、３は減圧器。1 is a compressor, 2 is a heat source side heat exchanger, and 3 is a pressure reducer.
４は利用側熱交換器、５は四方弁、６はアキュームレー
タで、冷媒配管７で連結されて冷凍サイクルを形成して
いる。８は収納部、９は圧縮機１のバウシングで、内部
にシリンダブロック１ｏが納められ、シリンダ１１を形
成している。シリンダ１１には吸入孔１２．吐出孔１３
および中間吐出孔１４が開口している。上記シリンダ１
１内には３ ｌニー＝ｊ
ローリングピストン１５が偏心して回転し、仕切ベーン
１６が当接している。１７は中間吐出−Ｊ１１４と吸入
孔１２を連通するバイノくス回路、１８は中間吐出孔１
４とバイパス回路との連通を開閉するプランジャで、連
結棒１９を介して収納部８に収められた形状記憶合金２
０のばね形状の伸縮によってスライドする。２１は形状
記憶合金２ｏの一端を連結棒１９へ固定するビンである
。4 is a user-side heat exchanger, 5 is a four-way valve, and 6 is an accumulator, which are connected by a refrigerant pipe 7 to form a refrigeration cycle. Reference numeral 8 designates a storage portion, and 9 designates a bousing of the compressor 1, in which a cylinder block 1o is housed to form a cylinder 11. The cylinder 11 has a suction hole 12. Discharge hole 13
And the intermediate discharge hole 14 is open. Above cylinder 1
1, a rolling piston 15 rotates eccentrically and is in contact with a partition vane 16. 17 is a binox circuit that communicates the intermediate discharge J114 with the suction hole 12, and 18 is the intermediate discharge hole 1.
A plunger that opens and closes communication between the shape memory alloy 2 and the bypass circuit, which is housed in the storage section 8 via the connecting rod 19.
It slides by the expansion and contraction of the spring shape. 21 is a pin for fixing one end of the shape memory alloy 2o to the connecting rod 19.
以上の構成でつぎに本発明の詳細な説明する０まず、冬
期ヒートポンプ運転を行なう場合、四方弁５は第１図の
状態になっている。また形状記憶合金２Ｑのばね形状は
雰囲気温度が低いために伸びており、連結棒１９を介し
てプランジャー１８を押して中間吐出孔１４を閉鎖して
いる。この状態で圧縮機１が運転されると吸入孔１２か
らシリンダ１１内に吸入された冷凍の大部分は吐出孔１
３より吐出されて四方弁５．利扇′：側熱交換器・、減
圧器３．熱源側熱交換器２を経て再び四方弁５に戻りア
キュームレータ６から吸入孔１２へ戻る。With the above configuration, the present invention will now be described in detail. First, when performing winter heat pump operation, the four-way valve 5 is in the state shown in FIG. Further, the spring shape of the shape memory alloy 2Q expands due to the low ambient temperature, and pushes the plunger 18 via the connecting rod 19 to close the intermediate discharge hole 14. When the compressor 1 is operated in this state, most of the refrigeration sucked into the cylinder 11 from the suction hole 12 is transferred to the discharge hole 1.
3 and is discharged from the four-way valve 5. Fan': Side heat exchanger, pressure reducer 3. It passes through the heat source side heat exchanger 2, returns to the four-way valve 5, and returns from the accumulator 6 to the suction hole 12.
したがって、この場合は、利用側熱交換器４は凝縮器と
して働らき犬き々暖房能力が得れる。また暖房運転中で
も収納部８は外気にさらされているため比較的低温に保
たれるので、常に中間吐出孔１４は閉鎖されている。Therefore, in this case, the user-side heat exchanger 4 works as a condenser and can provide sufficient heating capacity. Further, even during the heating operation, the storage section 8 is kept at a relatively low temperature because it is exposed to the outside air, so the intermediate discharge hole 14 is always closed.
つぎに夏期に冷房を行なう場合は、四方弁５は切換って
おり、かつ形状記憶合金２０のばね形状は雰囲気温度が
高いために縮少しており連結棒１９を介してプランジャ
ー１８を引いて中間吐出孔１４を開放するとともにバイ
パス回路１７と連通させている。この状態で圧縮機１が
運転されると吸入孔１２からシリンダ１１内に吸入され
た冷媒の一部は圧縮途中に中間吐出孔１４．バイパス回
路１７を経てふたたび吸入孔１２へ戻る。したがって、
残りの冷媒が吐出孔１３より吐出されて四方弁５゜熱源
側熱交換器２．減圧器３．利用側熱交換器４を経てふた
たび四方弁５に戻りアキュームレーク６から吸入孔１２
へ戻る。したがってこの場合は、１
利用側熱交換器４は蒸発器として働らき冷房負荷に対し
て適当に能力制御された冷房能力が得れる。Next, when performing air conditioning in the summer, the four-way valve 5 is switched, and the spring shape of the shape memory alloy 20 is contracted due to the high ambient temperature, so the plunger 18 is pulled through the connecting rod 19. The intermediate discharge hole 14 is open and communicated with the bypass circuit 17. When the compressor 1 is operated in this state, a portion of the refrigerant sucked into the cylinder 11 from the suction hole 12 flows through the intermediate discharge hole 14 during compression. It returns to the suction hole 12 via the bypass circuit 17. therefore,
The remaining refrigerant is discharged from the discharge hole 13 and passes through the four-way valve 5° heat source side heat exchanger 2. Pressure reducer 3. It returns to the four-way valve 5 via the heat exchanger 4 on the user side, and from the accumulation rake 6 to the suction hole 12.
Return to Therefore, in this case, the heat exchanger 4 on the user side functions as an evaporator, and the cooling capacity can be appropriately controlled with respect to the cooling load.
壕だ冷房運転中でも収納部８は比較的高温の外気５″−
・２
にさらされているため常に中間吐出孔１４は開放されて
いる。Even during trench cooling operation, the storage compartment 8 is filled with relatively high temperature outside air.
-2 The intermediate discharge hole 14 is always open because it is exposed to.
以上のように本実施例では、冷暖房時の外気温の違いを
利用して形状記憶合金の形状変化により、プランジャ１
８を駆動して中間吐出孔１４の開閉を行ない、冷暖房時
の必要能力に合った圧縮機能力に制御することが可能で
ある。またプランジャ１８は中間吐出孔１４を直接閉鎖
するものであるから、閉鎖時、中間吐出孔１４部のシリ
ンダ１１側には小さなりリアランスボリュームしかでき
ないので、圧縮効率が大きく低下することはない。As described above, in this embodiment, the plunger 1
8 to open and close the intermediate discharge hole 14, and it is possible to control the compression function to match the required capacity during heating and cooling. Further, since the plunger 18 directly closes the intermediate discharge hole 14, only a small rearance volume is created on the cylinder 11 side of the intermediate discharge hole 14 when it is closed, so that the compression efficiency does not decrease significantly.
なお、本実施例では中間吐出孔１４を直接プランジャ１
８で閉鎖したが本発明によればこれに必らず、中間吐出
孔と圧縮機の吸入側とを連通ずるバイパス回路を圧縮機
ハウジング外部に設け、このバイパス回路の中間部に開
閉弁を設け、この開閉弁を形状記憶合金で駆動してもよ
い。さらに形状記憶合金に作用する熱源は、本実施例で
は夏冬の温度の異なる外気を利用したが、これに限らず
冷凍サイクルの高温部や低温部または仙の熱源で６ペー
ジ
もよい。また収納部８は外気との熱交換を促進するため
に外側にフィンを設けてもよい。In this embodiment, the intermediate discharge hole 14 is directly connected to the plunger 1.
However, according to the present invention, a bypass circuit is provided outside the compressor housing that communicates the intermediate discharge hole with the suction side of the compressor, and an on-off valve is provided in the middle of this bypass circuit. , this on-off valve may be driven by a shape memory alloy. Furthermore, the heat source that acts on the shape memory alloy uses outside air with different temperatures in summer and winter in this embodiment, but it is not limited to this, and heat sources in the high temperature section, low temperature section of the refrigeration cycle, or heat source may be used as the heat source. Further, the storage section 8 may be provided with fins on the outside to promote heat exchange with the outside air.
以上のように本発明によれば圧縮機、熱源側熱交換器、
減圧器、利用側熱交換器を順次連結して冷凍サイクルを
形成するとともに上記圧縮機のシリンダに設けた吸入孔
、吐出孔および中間吐出孔を設け、上記中間吐出孔と上
記圧縮機の吸入側とを連通ずるバイパス回路を設け、上
記バイパス回路を開閉する開閉弁を設け、上記開閉弁を
駆動する形状記憶合金を設けたもので、電磁弁等の電気
を利用した開閉弁ではなく、単に熱源の温度変化を利用
した開閉弁であるので安価で簡単に圧縮機の容量制御が
できるものである。１だ形状記憶合金を用いたことによ
り、大きな駆動力および大きなストロークを得ることが
できるものである。As described above, according to the present invention, the compressor, the heat source side heat exchanger,
A refrigeration cycle is formed by sequentially connecting a pressure reducer and a user-side heat exchanger, and a suction hole, a discharge hole, and an intermediate discharge hole are provided in the cylinder of the compressor, and the intermediate discharge hole and the suction side of the compressor are provided. A bypass circuit is provided to communicate with the bypass circuit, an on-off valve is provided to open and close the bypass circuit, and a shape memory alloy is provided to drive the on-off valve. Since it is an on-off valve that utilizes temperature changes, it is inexpensive and can easily control the capacity of the compressor. By using a shape memory alloy, it is possible to obtain a large driving force and a large stroke.
第１図は本発明の一実施例における冷凍装置の冷凍サイ
クル図、第２図は圧縮機の断面図である。
１・・・・・・圧縮機、２・・・・・・熱源側熱交換器
、３・・・・・・減圧器、４・・・・・・利用側熱交換
器、１１・・７ベーミ′
・・・・シリンダ、１２・・・・・・吸入孔、１３・・
・・・・吐出孔、１４・・・・・・中間吐出孔、１了・
・・・・・バイパス回路、１８・・・・・・プランジャ
（開閉弁）、２０・・・・・・形状記憶合金。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図FIG. 1 is a refrigeration cycle diagram of a refrigeration system according to an embodiment of the present invention, and FIG. 2 is a sectional view of a compressor. 1... Compressor, 2... Heat source side heat exchanger, 3... Pressure reducer, 4... User side heat exchanger, 11...7 Boemi'...Cylinder, 12...Suction hole, 13...
... Discharge hole, 14... Intermediate discharge hole, 1 end
... Bypass circuit, 18 ... Plunger (opening/closing valve), 20 ... Shape memory alloy. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2
Claims (1)
次連結して冷凍サイクルを形成するとともに上記圧縮機
のシリンダに吸入孔、吐出孔および中間吐出孔を設け、
上記中間吐出孔と上記圧縮機の吸入側とを連通ずるバイ
パス回路を設け、上記バイパス回路を開閉する開閉弁を
設け、上記開閉弁を駆動する形状記憶合金を設けた冷凍
装置。A compressor, a heat source side heat exchanger, a pressure reducer, and a user side heat exchanger are sequentially connected to form a refrigeration cycle, and the cylinder of the compressor is provided with a suction hole, a discharge hole, and an intermediate discharge hole,
A refrigeration system comprising a bypass circuit that communicates the intermediate discharge hole with the suction side of the compressor, an on-off valve that opens and closes the bypass circuit, and a shape memory alloy that drives the on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8902482A JPS58204993A (en) | 1982-05-25 | 1982-05-25 | Refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8902482A JPS58204993A (en) | 1982-05-25 | 1982-05-25 | Refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58204993A true JPS58204993A (en) | 1983-11-29 |
Family
ID=13959340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8902482A Pending JPS58204993A (en) | 1982-05-25 | 1982-05-25 | Refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58204993A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60102493U (en) * | 1983-12-20 | 1985-07-12 | 株式会社ボッシュオートモーティブ システム | vane compressor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518842A (en) * | 1978-07-26 | 1980-02-09 | Toshiba Corp | Rotary compressor |
| JPS55101790A (en) * | 1979-01-30 | 1980-08-04 | Mitsubishi Heavy Ind Ltd | Controlling mechanism of capacity for compressor |
-
1982
- 1982-05-25 JP JP8902482A patent/JPS58204993A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518842A (en) * | 1978-07-26 | 1980-02-09 | Toshiba Corp | Rotary compressor |
| JPS55101790A (en) * | 1979-01-30 | 1980-08-04 | Mitsubishi Heavy Ind Ltd | Controlling mechanism of capacity for compressor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60102493U (en) * | 1983-12-20 | 1985-07-12 | 株式会社ボッシュオートモーティブ システム | vane compressor |
| JPH0310396Y2 (en) * | 1983-12-20 | 1991-03-14 |
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