JPS649550B2 - - Google Patents
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- Publication number
- JPS649550B2 JPS649550B2 JP56016663A JP1666381A JPS649550B2 JP S649550 B2 JPS649550 B2 JP S649550B2 JP 56016663 A JP56016663 A JP 56016663A JP 1666381 A JP1666381 A JP 1666381A JP S649550 B2 JPS649550 B2 JP S649550B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- outdoor heat
- refrigerant
- subcooling
- divided
- 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
Links
- 239000003507 refrigerant Substances 0.000 claims description 29
- 238000005057 refrigeration Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000003446 memory effect Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Other Air-Conditioning Systems (AREA)
Description
【発明の詳細な説明】
本発明は数分割した熱交換器の冷媒分流量を風
速分布に応じて、形状記憶効果を有する合金で形
成した絞り装置で、最適流量制御する冷凍装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigeration system that optimally controls the flow rate of refrigerant in a heat exchanger divided into several parts according to the wind speed distribution using a throttling device made of an alloy having a shape memory effect. .
従来このような数分割した熱交換器を有する冷
凍サイクルを第５図により説明する。 A conventional refrigeration cycle having a heat exchanger divided into several parts will be explained with reference to FIG.
圧縮機１の吐出側は、室外側熱交換器２の入口
側であるヘツダー３に接続され、室外側熱交換器
２内部を上部より数分割し、各小区分された室外
側熱交換器２Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆ
を形成している。小区分された室外側熱交換器２
Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆの出口側は各
分流管４に接続され、デイストリビユーター５に
集合されている。圧縮機１より吐出された冷媒
は、室外側熱交換器２の入口側であるヘツダー３
にて、室外側熱交換器２内部を数分割流入して放
熱した後、各分流管４、デイストリビユーター５
にて分流集合され、キヤピラリチユーブ６にて減
圧されて室内側熱交換器７にて吸熱蒸発し圧縮機
１へ吸入される。 The discharge side of the compressor 1 is connected to the header 3 which is the inlet side of the outdoor heat exchanger 2, and the interior of the outdoor heat exchanger 2 is divided into several parts from the upper part, and each subsection of the outdoor heat exchanger 2A is performed. , 2B, 2C, 2D, 2E, 2F
is formed. Subdivided outdoor heat exchanger 2
The outlet sides of A, 2B, 2C, 2D, 2E, and 2F are connected to each branch pipe 4 and collected in a distributor 5. The refrigerant discharged from the compressor 1 is sent to the header 3 which is the inlet side of the outdoor heat exchanger 2.
After the heat is radiated by flowing into the outdoor heat exchanger 2 in several parts, each branch pipe 4 and distributor 5
It is separated and collected at the capillary tube 6, is depressurized at the capillary tube 6, is endothermically evaporated at the indoor heat exchanger 7, and is sucked into the compressor 1.
かかる構成の数分割した熱交換器を有するもの
は、大型機器に多く、又、省スペースという観点
より、室外ユニツトは第６図に示すように送風機
１０を上部に配設した上部吹出方式を採用してい
る。従つて、室外側熱交換器２に対する風速分布
は→印に示す如く分布されている。 Large equipment often has a heat exchanger divided into several parts, and from the perspective of space saving, outdoor units adopt a top blowing system with a blower 10 disposed at the top as shown in Figure 6. are doing. Therefore, the wind speed distribution for the outdoor heat exchanger 2 is distributed as shown by the → mark.
そのため、室外側熱交換器２の上部に位置する
小区分された室外側熱交換器２Ａの冷媒は高風速
の空気と接するため多量の熱を放熱し、出口側で
はかりの過冷却が行なわれている。それに対し、
室外側熱交換器２の下部に位置する小区分された
室外側熱交換器２Ｆの冷媒は、低風速の空気と接
するため少量の熱しか放熱できず、出口側では十
分凝縮しきれずに湿り状態である場合が多い。こ
のように、熱交換器を数分割した場合、各室外側
熱交換器２Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆ内
における冷媒バランスを調節することが困難であ
り、従つて熱交換器全体が有効に使用されていな
い。またこのような冷媒状態ではキヤピラリチユ
ーブ６における減圧が不安定となり、サイクル全
体が安定しない。 Therefore, the refrigerant in the subdivided outdoor heat exchanger 2A located at the upper part of the outdoor heat exchanger 2 comes into contact with the high wind speed air, and therefore radiates a large amount of heat, and the scale is supercooled on the outlet side. ing. For it,
The refrigerant in the subdivided outdoor heat exchanger 2F, which is located at the bottom of the outdoor heat exchanger 2, can only radiate a small amount of heat because it comes into contact with low wind speed air, and it is not sufficiently condensed on the outlet side, resulting in a wet state. is often the case. In this way, when the heat exchanger is divided into several parts, it is difficult to adjust the refrigerant balance in each of the outdoor heat exchangers 2A, 2B, 2C, 2D, 2E, and 2F. Not used effectively. Further, in such a refrigerant state, the pressure reduction in the capillary tube 6 becomes unstable, and the entire cycle becomes unstable.
また、キヤピラリチユーブの特性はその抵抗値
が固定されているため、圧縮機、熱交換器が固定
されると、ある温度条件では最大効率を示すが、
その条件を外れると効率が低下するという欠点を
有しており、現在のように幅広い温度条件にて高
い運転効率を求められる時代においては、その要
求に対応しきれないでいた。 In addition, since the resistance value of the capillary tube is fixed, if the compressor and heat exchanger are fixed, it will show maximum efficiency under certain temperature conditions, but
It has the disadvantage that efficiency decreases when these conditions are exceeded, and in the current era where high operating efficiency is required under a wide range of temperature conditions, it has not been able to meet the demands.
本発明は以上のような問題点を考察し、これを
解決するために、圧縮機と、冷媒流路を数分割し
た単一の室外側熱交換器と、前記室外側熱交換器
へ通風を行う送風機と、前記数分割した室外側熱
交換器のそれぞれの出口側に接続された絞り装置
と、室内側熱交換器を設け、前記絞り装置を、形
状記憶合金よりなり温度によつて絞り抵抗値を変
える伸縮可能な蛇腹状の感熱装置と、感熱装置の
一端に設けられた所定長さの毛細管と、前記感熱
装置の伸縮にともなつて前記毛細管が内部で出没
する第２の毛細管と、それぞれの室外側熱交換器
における冷媒流路の冷媒過冷却度を検出する検出
装置と、前記検出装置により検出した冷媒過冷却
度をあらかじめ設定した冷媒過冷却度に近づける
ように前記感熱装置を加熱する加熱装置により制
御する制御装置とより構成したものである。 The present invention considers the above-mentioned problems, and in order to solve the problems, it includes a compressor, a single outdoor heat exchanger in which the refrigerant flow path is divided into several parts, and ventilation to the outdoor heat exchanger. An air blower is provided, a throttling device connected to the outlet side of each of the outdoor heat exchangers divided into several parts, and an indoor heat exchanger. a bellows-shaped heat-sensitive device that can be expanded and contracted to change a value; a capillary tube of a predetermined length provided at one end of the heat-sensitive device; and a second capillary tube in which the capillary tube appears and retracts as the heat-sensitive device expands and contracts; a detection device for detecting the degree of refrigerant subcooling in the refrigerant flow path in each outdoor heat exchanger; and heating the heat sensitive device so that the degree of refrigerant subcooling detected by the detection device approaches a preset degree of refrigerant subcooling. This system consists of a control device that controls the heating device.
本発明は上記構成により、数分割した室外側熱
交換器に対応して絞り装置を制御し、あらかじめ
設定した最適冷媒過冷却度とすることができるた
めに分割されたそれぞれの室外側熱交換器の冷媒
バランスを調節でき、熱交換器全体を有効に使用
できる。 With the above configuration, the present invention can control the throttling device corresponding to the several divided outdoor heat exchangers and achieve a preset optimum degree of refrigerant subcooling for each of the divided outdoor heat exchangers. The refrigerant balance can be adjusted and the entire heat exchanger can be used effectively.
しかも負荷状況に応じて送風機の運転を制御す
る必要がないため制御も簡単となる。 Moreover, since there is no need to control the operation of the blower according to the load situation, control is also simplified.
以下、本発明の一実施例を第１図〜第４図ａ，
ｂにて説明する。 Hereinafter, one embodiment of the present invention will be described in FIGS. 1 to 4a,
This will be explained in b.
第１図は本発明による形状記憶合金絞り装置を
利用した冷凍装置のサイクル系統図及び室外側熱
交換器の風速分布図である。 FIG. 1 is a cycle system diagram of a refrigeration system using a shape memory alloy expansion device according to the present invention and a wind speed distribution diagram of an outdoor heat exchanger.
圧縮機１、室外側熱交換器２、室内側熱交換器
７の接続関係は第５図に示すと同様である。 The connection relationships among the compressor 1, outdoor heat exchanger 2, and indoor heat exchanger 7 are the same as shown in FIG.
絞り装置８Ａ，８Ｂ，８Ｃ，８Ｄ，８Ｅ，８Ｆ
は各小区分された室外側熱交換器２Ａ，２Ｂ，２
Ｃ，２Ｄ，２Ｅ，２Ｆの出口側に位置している各
分流管４に各々接続されている。 Squeezing device 8A, 8B, 8C, 8D, 8E, 8F
are each subdivided outdoor heat exchanger 2A, 2B, 2
It is connected to each branch pipe 4 located on the outlet side of C, 2D, 2E, and 2F.
次に第２図において、形状記憶効果を有する合
金で形成した絞り装置の構造について説明する。 Next, referring to FIG. 2, the structure of a drawing device made of an alloy having a shape memory effect will be described.
８は形状記憶合金絞り装置全体で内部によいて
は、９は加熱装置で電源１０と、通電量を制御す
る制御装置１１とに接続されている。１２は前記
加熱装置９によつて加熱される感熱装置である。
感熱装置には内部に空洞１３を有し、蛇腹状に形
成され、その一端１４は固定され、他の一端１５
は毛細管１６と接続されている。１７は前記毛細
管１６の外径よりわずかに大きい内径を有する第
２の毛細管である。感熱装置１２がその軸方向に
動く事（実線矢印方向）によつて、前記毛細管１
６は第２の毛細管１７内を軸方向に摺動する。 Reference numeral 8 denotes the entire shape memory alloy drawing device; internally, reference numeral 9 denotes a heating device, which is connected to a power source 10 and a control device 11 that controls the amount of electricity supplied. 12 is a heat-sensitive device heated by the heating device 9;
The heat sensitive device has a cavity 13 inside and is formed in a bellows shape, one end 14 of which is fixed and the other end 15.
is connected to the capillary tube 16. A second capillary tube 17 has an inner diameter slightly larger than the outer diameter of the capillary tube 16. By moving the heat sensitive device 12 in its axial direction (in the direction of the solid line arrow), the capillary tube 1
6 slides in the second capillary tube 17 in the axial direction.
次に前記感熱装置１２の構成について更に詳細
な説明を行う。感熱装置１２はその一部又は全体
が形状記憶効果を有する合金を材料として形成さ
れている。 Next, the configuration of the heat-sensitive device 12 will be explained in more detail. The heat sensitive device 12 is partially or entirely made of an alloy having a shape memory effect.
ある種の合金は所望する形状を記憶させること
ができ、そのような記憶作業を行つた後で別の異
なる形状に変形してもある温度以上に加熱すると
記憶していた形状に戻り、その後熱を取り去ると
再び前述の異なる形状に向つて変形し始める。こ
のような合金は「形状記憶合金」又は「形状記憶
効果を有する合金」と呼ばれている。第４図にお
いて、形状記憶合金で、たとえばコイル状に形成
された感熱装置１６を製作した場合の動きを説明
する。この場合、感熱装置１６は長さｌ＝l1とい
う形状を記憶している。これをｌ＝l2に引き伸ば
して（Ａ点）その後加熱していくと、ある温度
（Ｂ点）を越えると急速に縮少し始め、当初記憶
していた形（ｌ＝l1）に戻る（Ｃ点）。加熱を停
止し温度を下げるとある温度（Ｄ点）より低い所
で長さｌが再び伸び始める。ｌがある点（Ｅ点ｌ
＝l3）に達した時、再び加熱すればＦ点（Ｂ点と
同じ温度）を通つて記憶した形状（Ｃ点）へ戻
る。第２図における感熱装置１２の長さｌは第４
図ｂのＥ点（ｌ＝l3）となる。 Certain alloys can memorize a desired shape, and even if they are deformed into a different shape after such memorization, they will return to the memorized shape when heated above a certain temperature, and then When removed, it begins to deform again towards the different shape mentioned above. Such alloys are called "shape memory alloys" or "alloys with shape memory effect." Referring to FIG. 4, a description will be given of the operation of a heat-sensitive device 16 made of a shape memory alloy and formed into a coil shape, for example. In this case, the heat-sensitive device 16 stores a shape with a length l=l 1 . If this is stretched to l = l 2 (point A) and then heated, it will begin to shrink rapidly once it exceeds a certain temperature (point B), returning to the shape it originally remembered (l = l 1 ) ( point C). When heating is stopped and the temperature is lowered, the length l begins to increase again below a certain temperature (point D). The point where l is (E point l
= l 3 ), if it is heated again, it passes through point F (same temperature as point B) and returns to the memorized shape (point C). The length l of the heat-sensitive device 12 in FIG.
This is point E (l=l 3 ) in Figure b.
次に前記感熱装置１２が前述の形状記憶効果に
よつて、その記憶された長さｌ＝l1になつた状態
を第３図に示す。第３図は制御装置１１により加
熱装置９の通電量が増加され、感熱装置１２が十
分に加熱されている状態を示す。第２図と第３図
を比較すると、感熱装置１２の長さｌが通電量す
なわち加熱量によつて変化することがわかる。第
２図において冷凍サイクル上の総絞り抵抗値はそ
の長さＬ＝（毛細管１６の長さl4）＋（第２の毛細
管１７の長さl5）にほぼ比例する。 Next, FIG. 3 shows a state in which the heat-sensitive device 12 has reached its memorized length l=l 1 due to the shape memory effect described above. FIG. 3 shows a state in which the amount of electricity supplied to the heating device 9 is increased by the control device 11, and the heat-sensitive device 12 is sufficiently heated. Comparing FIG. 2 and FIG. 3, it can be seen that the length l of the heat-sensitive device 12 changes depending on the amount of current, that is, the amount of heating. In FIG. 2, the total throttle resistance value on the refrigeration cycle is approximately proportional to its length L=(length l 4 of capillary tube 16)+(length l 5 of second capillary tube 17).
感熱装置１２が加熱され第３図の状態になる
と、冷凍サイクル上の絞り抵抗値は増大する。 When the heat-sensitive device 12 is heated to the state shown in FIG. 3, the throttling resistance value on the refrigeration cycle increases.
すなわち、第２図の状態と比較して感熱装置１
２の長さl3がl1へと縮少するため毛細管１６が第
２図左方向へ移動し、その結果第２の毛細管１７
の長さl5が増加するからである。以上の説明から
明らかなように、制御装置１１により加熱装置９
の通電量を制御し、冷凍サイクル上の絞り抵抗値
を制御することができる。この場合、制御装置１
１の入力信号として、例えば小区分された室外側
熱交換器２Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆの
各出口側の冷媒過冷却度を検出する検出装置の信
号が適している。そして制御装置１１は、この検
出装置で検出した冷媒過冷却度を、あらかじめ設
定した冷媒過冷却度に近づけるように加熱装置９
を制御する。このような特性をもつた形状記憶合
金にて形成した絞り装置を第１図に示す小区分さ
れた室外側熱交換器２Ａ，２Ｂ，２Ｃ，２Ｄ，２
Ｅ，２Ｆの出口側に位置している各分流管４に
各々接続されている。 That is, compared to the state shown in FIG.
Since the length l 3 of 2 is reduced to l 1 , the capillary tube 16 moves to the left in FIG. 2, and as a result, the second capillary tube 17
This is because the length l 5 of increases. As is clear from the above explanation, the heating device 9 is controlled by the control device 11.
It is possible to control the amount of current applied to the refrigeration cycle and control the throttling resistance value on the refrigeration cycle. In this case, the control device 1
For example, a signal from a detection device that detects the degree of subcooling of the refrigerant on each outlet side of the subdivided outdoor heat exchangers 2A, 2B, 2C, 2D, 2E, and 2F is suitable as the input signal. Then, the control device 11 controls the heating device 9 so that the degree of subcooling of the refrigerant detected by this detection device approaches the degree of subcooling of the refrigerant set in advance.
control. A throttling device made of a shape memory alloy having such characteristics is used in subdivided outdoor heat exchangers 2A, 2B, 2C, 2D, and 2 shown in FIG.
It is connected to each branch pipe 4 located on the outlet side of E and 2F.
従つてこのような冷凍サイクルにて運転を行つ
た場合、圧縮機１より吐出された高温高圧冷媒
は、室外側熱交換器２の風速分布に対応した小区
分された室外側熱交換器２Ａ，２Ｂ，２Ｃ，２
Ｄ，２Ｅ，２Ｆの出口側分流管４に各々接続され
ている各絞り装置８Ａ，８Ｂ，８Ｃ，８Ｄ，８
Ｅ，８Ｆの抵抗値の相違により高風速で上部に位
置する室外側熱交換器２Ａに多く流入し、順次、
風速分布に応じ下部にいくに従つて、冷媒流入量
は減少する。すなわちこの場合各絞り装置８Ａ，
８Ｂ，８Ｃ，８Ｄ，８Ｅ，８Ｆは順次抵抗が大き
くなるように制御されている。従つて各室外側熱
交換器２Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆの放
熱量関係は２Ａ＞２Ｂ＞２Ｃ＞２Ｄ＞２Ｅ＞２Ｆ
の関係となる。そのため、各室外側熱交換器２
Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆの出口側にお
いては、冷媒流量とバランスして、冷媒の過冷却
度の状態も同一となり、室外側熱交換器２全体を
有効に利用するとともにサイクル全体が安定す
る。 Therefore, when such a refrigeration cycle is operated, the high-temperature, high-pressure refrigerant discharged from the compressor 1 is passed through the outdoor heat exchanger 2A, which is divided into small sections corresponding to the wind speed distribution of the outdoor heat exchanger 2. 2B, 2C, 2
Each throttling device 8A, 8B, 8C, 8D, 8 connected to the outlet side branch pipe 4 of D, 2E, 2F, respectively
Due to the difference in the resistance values of E and 8F, a large amount of air flows into the outdoor heat exchanger 2A located at the top at high wind speed, and in turn,
The amount of refrigerant inflow decreases toward the bottom depending on the wind speed distribution. That is, in this case, each diaphragm device 8A,
8B, 8C, 8D, 8E, and 8F are controlled so that the resistance increases in sequence. Therefore, the heat radiation amount relationship of each outdoor heat exchanger 2A, 2B, 2C, 2D, 2E, 2F is 2A>2B>2C>2D>2E>2F
The relationship is Therefore, each outdoor heat exchanger 2
On the outlet sides of A, 2B, 2C, 2D, 2E, and 2F, the degree of subcooling of the refrigerant is the same in balance with the refrigerant flow rate, and the entire outdoor heat exchanger 2 is used effectively, and the entire cycle is becomes stable.
以上の説明から明らかなように本発明は、数分
割した室外側熱交換器に対応して絞り装置をそれ
ぞれ有しているために冷媒バランスを調節するこ
とができ熱交換器全体を有効に使用できる。 As is clear from the above description, the present invention has a throttling device corresponding to each of the several divided outdoor heat exchangers, so that the refrigerant balance can be adjusted and the entire heat exchanger can be used effectively. can.
またこのそれぞれの絞り装置は、その絞り抵抗
値が一定のものではなく室外側熱交換器の冷媒過
冷却度に応じて可変できるものであるので冷媒バ
ランスの最適な調整が可能である。 Furthermore, since the throttling resistance value of each throttling device is not constant but can be varied depending on the degree of subcooling of the refrigerant in the outdoor heat exchanger, the refrigerant balance can be optimally adjusted.
さらに絞り装置は形状記憶合金よりなる感熱装
置とこの感熱装置に温度変化を与えて伸縮させ絞
り抵抗値を変えるための感熱装置とにより構成し
ているので簡単な構成とすることができる。さら
に本発明の冷凍装置は、送風機によつて、単一の
室外側熱交換器に通風する構成であるため、送風
機を複数台設置し、負荷状況に応じて送風機の運
転台数を制御する必要性がなく、冷凍装置全体の
制御も単となる等のの効果を有する。 Further, since the drawing device is constituted by a heat-sensitive device made of a shape memory alloy and a heat-sensitive device for expanding and contracting the heat-sensitive device by applying a temperature change to the heat-sensitive device to change the drawing resistance value, the drawing device can have a simple structure. Furthermore, since the refrigeration system of the present invention is configured to use a blower to ventilate a single outdoor heat exchanger, it is necessary to install a plurality of blowers and control the number of blowers in operation according to the load situation. This has the advantage of simplifying the control of the entire refrigeration system.
第１図は本発明による形状記憶合金絞り装置を
利用した冷凍装置のサイクル系統図及び室外側熱
交換器の風速分布図、第２図及び第３図は形状記
憶合金を利用した絞り装置の断面図、第４図ａ，
ｂは形状記憶合金による感熱装置の一例及び作動
説明図、第５図は従来の冷凍サイクル系統図及び
室外側熱交換器の風速分布図、第６図は室外ユニ
ツトの断面及び風速分布図である。
１……圧縮機、２……室外側熱交換器、２Ａ，
２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆ……数分割された
各室外側熱交換器、３……ヘツダー、４……分流
管、５……デイストリビユーター、６……キヤピ
ラリチユーブ、７……室内側熱交換器、８……形
状記憶合金絞り装置、８Ａ，８Ｂ，８Ｃ，８Ｄ，
８Ｅ，８Ｆ……数分割された各室外側熱交換器２
Ａ，２Ｂ，２Ｃ，２Ｄ，２Ｅ，２Ｆの形状記憶合
金絞り装置、９……加熱装置、１０……電源、１
１……通電量を制御する制御装置、１２……感熱
装置、１３……感熱装置１２内部の空洞、１４，
１５……感熱装置１２の両端、１６，１７……径
の異なる毛細管。
Figure 1 is a cycle system diagram of a refrigeration system using a shape memory alloy expansion device according to the present invention and a wind speed distribution diagram of an outdoor heat exchanger, and Figures 2 and 3 are cross sections of a expansion device using a shape memory alloy. Figure 4a,
Fig. 5 is a conventional refrigeration cycle system diagram and a wind speed distribution diagram of an outdoor heat exchanger, and Fig. 6 is a cross section of an outdoor unit and a wind speed distribution diagram. . 1...Compressor, 2...Outdoor heat exchanger, 2A,
2B, 2C, 2D, 2E, 2F...Several divided outdoor heat exchangers, 3...Header, 4...Diversion tube, 5...Distributor, 6...Capillary tube, 7... ...Indoor heat exchanger, 8...Shape memory alloy expansion device, 8A, 8B, 8C, 8D,
8E, 8F...Each outdoor heat exchanger 2 divided into several parts
A, 2B, 2C, 2D, 2E, 2F shape memory alloy drawing device, 9... heating device, 10... power supply, 1
DESCRIPTION OF SYMBOLS 1... Control device for controlling the amount of electricity, 12... Heat-sensitive device, 13... Cavity inside heat-sensitive device 12, 14,
15... Both ends of the heat-sensitive device 12, 16, 17... Capillary tubes with different diameters.
Claims (1)
側熱交換器と、前記室外側熱交換器へ通風を行う
送風機と、前記数分割した室外側熱交換器のそれ
ぞれの出口側に接続された絞り装置と、室内側熱
交換器を設け、前記絞り装置を、形状記憶合金よ
りなる温度によつて絞り抵抗値を変える伸縮可能
な蛇腹状の感熱装置と、感熱装置の一端に設けら
れた所定長さの毛細管と、前記感熱装置の伸縮に
ともなつて前記毛細管が内部で出没する第２の毛
細管と、それぞれの室外側熱交換器における冷媒
流路の冷媒過冷却度を検出する検出装置と、前記
検出装置により検出した冷媒過冷却度をあらかじ
め設定した冷媒過冷却度に近づけるように前記感
熱装置を加熱する加熱装置により制御する制御装
置とより構成した冷凍装置。1. A compressor, a single outdoor heat exchanger in which the refrigerant flow path is divided into several parts, a blower that provides ventilation to the outdoor heat exchanger, and an outlet side of each of the outdoor heat exchangers in which the refrigerant flow path is divided into several parts. A connected aperture device and an indoor heat exchanger are provided, and the aperture device is provided at one end of an expandable and contractible bellows-shaped thermosensitive device that changes the aperture resistance value depending on the temperature and is made of a shape memory alloy. detecting the degree of subcooling of the refrigerant in the refrigerant flow path in each outdoor heat exchanger; A refrigeration system comprising: a detection device; and a control device controlled by a heating device that heats the heat-sensitive device so that the degree of subcooling of the refrigerant detected by the detection device approaches a preset degree of subcooling of the refrigerant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56016663A JPS57131968A (en) | 1981-02-05 | 1981-02-05 | Refrigerating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56016663A JPS57131968A (en) | 1981-02-05 | 1981-02-05 | Refrigerating plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57131968A JPS57131968A (en) | 1982-08-16 |
| JPS649550B2 true JPS649550B2 (en) | 1989-02-17 |
Family
ID=11922561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56016663A Granted JPS57131968A (en) | 1981-02-05 | 1981-02-05 | Refrigerating plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57131968A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2852678B1 (en) * | 2003-03-21 | 2005-07-15 | Valeo Thermique Moteur Sa | LOW TEMPERATURE COOLING SYSTEM OF EQUIPMENT, IN PARTICULAR A MOTOR VEHICLE EQUIPMENT, AND RELATED HEAT EXCHANGERS |
| JP6045695B2 (en) * | 2013-06-13 | 2016-12-14 | 三菱電機株式会社 | Air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51121826U (en) * | 1975-03-28 | 1976-10-02 |
-
1981
- 1981-02-05 JP JP56016663A patent/JPS57131968A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57131968A (en) | 1982-08-16 |
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