JPH049552A - Freezer device - Google Patents
Freezer deviceInfo
- Publication number
- JPH049552A JPH049552A JP11278690A JP11278690A JPH049552A JP H049552 A JPH049552 A JP H049552A JP 11278690 A JP11278690 A JP 11278690A JP 11278690 A JP11278690 A JP 11278690A JP H049552 A JPH049552 A JP H049552A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- refrigerant
- dsh
- compressor
- condenser
- 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
- 239000003507 refrigerant Substances 0.000 claims abstract description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims 3
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract 5
- 238000000034 method Methods 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
Landscapes
- Air Conditioning Control Device (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は電動膨脂弁等の弁開度の調整が可能な減圧器を
使用する冷凍装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a refrigeration system using a pressure reducer such as an electric fat expansion valve whose opening degree can be adjusted.
〈従来の技術〉
従来用いらている電動膨脂弁を有する空気調和機におい
ては、その弁を制御する際に、冷媒回路上の各部温度例
えば特公平1−36026号公報においては圧縮機の吐
出温度をセンサーによって検知し、その情報をもとに制
御することが一般的であった。<Prior art> In an air conditioner having a conventionally used electric fat expansion valve, when controlling the valve, the temperature of each part on the refrigerant circuit is controlled, for example, in Japanese Patent Publication No. 1-36026, the discharge of the compressor is It was common practice to detect temperature with a sensor and control based on that information.
〈発明が解決しようとする課題〉
即ち、従来この種の空気調和機は、凝縮器における過冷
却度、蒸発器における過熱度、吐出温度等を検知し電動
弁をMI御していたが、それらの制mは、決められた条
件内では安定した運転が可能であるが、それ以外ではハ
ンチングすることか多かった。<Problem to be solved by the invention> That is, conventionally, this type of air conditioner has detected the degree of supercooling in the condenser, the degree of superheating in the evaporator, the discharge temperature, etc., and controlled the electric valve by MI. The control system allows stable operation within certain conditions, but often causes hunting outside of those conditions.
例えば、分離型空気調和機の室内ユニ・フトと室外ユニ
ット・とを接続するユニット間配管長が変化したり、室
内外温度条件、冷媒チャージ星等の変化があった場合、
ハンチングし易い欠陥があった。For example, if the length of the inter-unit piping connecting the indoor unit and outdoor unit of a separate air conditioner changes, or if there are changes in indoor/outdoor temperature conditions, refrigerant charge, etc.
There was a defect that made it easy to hunt.
本発明は上記実情に鑑み、圧縮機吐出側と凝縮器中間に
温度センサーを配設することで、前記課題を解決するよ
うにした冷凍装置を提供することを目的としたものであ
る。In view of the above-mentioned circumstances, it is an object of the present invention to provide a refrigeration system that solves the above-mentioned problems by disposing a temperature sensor between the discharge side of the compressor and the condenser.
〈課題を解決するための手段〉
本発明は、電動膨張弁等の弁開度の調整が可能な減圧器
を採用した空気調和機において、圧縮機の冷媒吐出温度
と凝縮器の冷媒温度とを検知し、その温度差を所定の範
囲内に収めるよう減圧器の弁開度を制御するようにした
ものである。<Means for Solving the Problems> The present invention provides an air conditioner that employs a pressure reducer capable of adjusting the opening degree of a valve such as an electric expansion valve. The temperature difference is detected and the valve opening of the pressure reducer is controlled to keep the temperature difference within a predetermined range.
くコイ1三 用〉
」1記のように、圧縮機の冷媒吐出温度、凝縮器の冷媒
温度との差を所定の範囲内に収めるよう減圧器の弁開度
を制御して、ユニ・ノド配管の長さ等の条件が変化して
もハンチングせず安定した運転ができるものとなる。As described in 1., the valve opening of the pressure reducer is controlled to keep the difference between the refrigerant discharge temperature of the compressor and the refrigerant temperature of the condenser within a predetermined range. Even if conditions such as the length of the piping change, stable operation is possible without hunting.
〈 実方色例〉
以下、本発明の実施例を図面に基ついて説明すれば、次
の通りである。<Example of Real Square Color> Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第1図は空気調和機の冷媒回路を示すものであり、1は
室外ユニットAO!1の圧縮機で、該圧縮機1の吐出管
部に四方弁2を接続し、このも西方弁2の一方に凝縮器
となる室外熱交換器3を接続し、その先端を室内ユニ・
ノドB側の電動膨張弁4(弁開度の調整が可能な減圧器
)と蒸発器となる室内熱交換器5を順次接続し、且つ、
室内熱交換器5の先端を前記四方弁2の他方を介しアキ
ュームレータ6を経て圧縮機]に戻る冷媒回路を形成し
、且つ室外熱交換器3に温度センサー7を取付けると共
に、室内熱交換器5に温度セ〉サー8を取付け、また圧
縮Filの吐出管部にも温度センサー9を取り付けし、
全体として電動膨張弁使用の空気調和機となる。10は
室外温度センサー、11は室内温度センサである。12
は室外ユニ・ソトAと室内ユニットBとをつなぐユニッ
ト間配管で、両ユニリドの設置場所に応じてこの配管の
長さは変わる9次にこの作用を説明すると、例えは冷房
時にあっては、圧縮機1にて圧縮された高圧冷媒を四方
弁2から室外熱交換器2に導き凝縮し、この後冷媒を室
内熱交換器うて蒸発し、その熱交換にて室内を冷やすも
のである。暖房時にあっては冷媒は上記と逆に流れる。Figure 1 shows the refrigerant circuit of an air conditioner, and 1 indicates the outdoor unit AO! 1 compressor, a four-way valve 2 is connected to the discharge pipe of the compressor 1, an outdoor heat exchanger 3 serving as a condenser is connected to one side of the west valve 2, and its tip is connected to an indoor unit.
An electric expansion valve 4 (a pressure reducer whose valve opening degree can be adjusted) on the nod B side and an indoor heat exchanger 5 serving as an evaporator are sequentially connected, and
A refrigerant circuit is formed in which the tip of the indoor heat exchanger 5 returns to the compressor via the accumulator 6 via the other side of the four-way valve 2, and a temperature sensor 7 is attached to the outdoor heat exchanger 3. A temperature sensor 8 is attached to the compressed film, and a temperature sensor 9 is attached to the discharge pipe of the compressed film.
Overall, it is an air conditioner that uses an electric expansion valve. 10 is an outdoor temperature sensor, and 11 is an indoor temperature sensor. 12
is the inter-unit piping that connects the outdoor unit A and the indoor unit B, and the length of this piping changes depending on the installation location of both units.9 To explain this effect, for example, during cooling, The high-pressure refrigerant compressed by the compressor 1 is guided through the four-way valve 2 to the outdoor heat exchanger 2 and condensed, and then the refrigerant is evaporated in the indoor heat exchanger, and the room is cooled by the heat exchange. During heating, the refrigerant flows in the opposite direction to the above.
この場合〈冷房時並びに暖房時)、圧縮機1の吐出管の
温度センサーって圧縮R1からの冷媒吐出温度を、室外
熱交換器(凝縮器)3の温度センサー7で、この凝縮器
の冷媒温度を夫々検知すると同時に、室内機、室外機の
吸込み側にも温度センサー11.10か有り室温と外気
温を検知するものである。In this case (during cooling and heating), the temperature sensor of the discharge pipe of the compressor 1 detects the temperature of the refrigerant discharged from the compression R1, and the temperature sensor 7 of the outdoor heat exchanger (condenser) 3 detects the temperature of the refrigerant discharged from the condenser. In addition to detecting the respective temperatures, there are also temperature sensors 11 and 10 on the suction sides of the indoor and outdoor units to detect the room temperature and outside temperature.
ここにおいて、圧縮機1の冷媒吐出温度をDとし凝縮器
3の中間部に有する温度センサー78て検知する凝縮温
度C1,C2との差を吐出過熱度L”) S Hとする
。即ち、冷房時DSH=D(L、暖房#DS)l=D−
C2である9ここて、千め目標D S l−(の範囲を
決めておき、現時点のl) S Hか目標DSHより高
い場合は電動膨張弁4を規定量開け1反対に低い場合は
それを閏じるものて゛ある。このときの規定Vは一定値
でもよいし、[1標値との差の比例値でもよい 13は
制御器で 七、述の吐出過熱度(圧縮機]の冷媒吐出温
度と凝縮器3.5の温度差)を検出する検出器と、この
吐出過熱度に応して電動膨張弁/1の開度を調整する制
御器が収納されている。Here, let the refrigerant discharge temperature of the compressor 1 be D, and the difference between the condensation temperatures C1 and C2 detected by the temperature sensor 78 provided in the middle part of the condenser 3 is the discharge superheat degree L") S H. That is, cooling Time DSH=D(L, heating #DS)l=D-
C2 is 9. Here, determine the range of 1,000 target D S l- (current l) S H or if it is higher than the target DSH, open the electric expansion valve 4 by the specified amount 1 On the contrary, if it is lower, it is There is something to dig into. The regulation V at this time may be a constant value or may be a proportional value of the difference from the standard value. 13 is the controller 7. The refrigerant discharge temperature of the discharge superheat degree (compressor) and the condenser 3.5 A controller that adjusts the opening degree of the electric expansion valve/1 according to the degree of discharge superheat is housed therein.
例えば、第2図乃至第4図にこの目標D S )−4の
決め方の一例を示す。For example, an example of how to determine this target D S )-4 is shown in FIGS. 2 to 4.
第2図、第3[4は外気温と室内温又は外気温と設定温
度をパラメータにした場合であり、第、1図は目標D
S Hを−・定とした例である。Figures 2 and 3 [4 are the cases where outside temperature and indoor temperature or outside temperature and set temperature are used as parameters, and Figures 1 and 3 show the case where the target D
This is an example in which S H is set to −・constant.
第5図は本発明の動作)v7−ナヤートを示す。FIG. 5 shows the operation of the present invention) v7-Nayat.
スタート時の各温度センサーでテークを読み。Read the take with each temperature sensor at the start.
冷房7暖房運転開始で夫々の温度を検知し、吐出過熱度
D S H=D C+ 、D S H= r、)
C2か目標範囲に入−)でいるかともかを比較し、その
温度不に応して電動膨張弁の開開を制御するものでる。Cooling 7 At the start of heating operation, each temperature is detected and the discharge superheat degree D S H = D C + , D S H = r, )
It compares whether C2 is within the target range or not, and controls the opening and opening of the electric expansion valve depending on the temperature.
・〈発明の効果〉
上述のように本発明の冷凍装置は、圧縮機の冷媒吐出温
度と凝縮器の冷媒温度を検知しこの差に応じ減圧器の弁
開度を制御して吐出過熱度を所定値に保つようにしなの
で、ユニット間配管の長さや外気、室温条件等か変化し
ても安定した運転状態か得れるものとなる。-<Effects of the Invention> As described above, the refrigeration system of the present invention detects the refrigerant discharge temperature of the compressor and the refrigerant temperature of the condenser, and controls the valve opening of the pressure reducer according to the difference to control the degree of discharge superheat. Since it is maintained at a predetermined value, a stable operating state can be obtained even if the length of the piping between units, the outside air, the room temperature conditions, etc. change.
図面は本発明の実施例を示すもので、第1図は空気調和
機の冷媒回路図、第2図は冷房時の吐出過熱度と外気温
との関係の設定温度図、第3図は暖房時の吐出過熱度と
外気温との関係の設定温度図、第4図は吐出過熱度と凝
縮温度との関係の目標範囲図、第5図は同動作フローチ
ャートである。
1、・・圧縮機、3・・・室外熱交換器、4・・電動l
l!脹弁、5・・・室内熱交換器、13・・・M御装置
。The drawings show an embodiment of the present invention. Fig. 1 is a refrigerant circuit diagram of an air conditioner, Fig. 2 is a set temperature diagram showing the relationship between discharge superheat degree and outside air temperature during cooling, and Fig. 3 is a heating FIG. 4 is a target range diagram of the relationship between the discharge superheat degree and the condensing temperature, and FIG. 5 is a flowchart of the same operation. 1... Compressor, 3... Outdoor heat exchanger, 4... Electric l
l! Expansion valve, 5...Indoor heat exchanger, 13...M control device.
Claims (1)
発器を順次冷媒管で接続した冷凍装置において、前記圧
縮機の冷媒吐出温度と前記凝縮器の冷媒温度との差を検
出する検出手段と、この手段からの信号に基づいて前記
減圧器の弁開度を調整する制御器とを備えたことを特徴
とする冷凍装置。1. In a refrigeration system in which a compressor, a condenser, a pressure reducer whose valve opening degree can be adjusted, and an evaporator are sequentially connected by a refrigerant pipe, the difference between the refrigerant discharge temperature of the compressor and the refrigerant temperature of the condenser is determined. A refrigeration system comprising: a detection means for detecting a detection; and a controller for adjusting a valve opening of the pressure reducer based on a signal from the detection means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11278690A JPH049552A (en) | 1990-04-27 | 1990-04-27 | Freezer device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11278690A JPH049552A (en) | 1990-04-27 | 1990-04-27 | Freezer device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH049552A true JPH049552A (en) | 1992-01-14 |
Family
ID=14595477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11278690A Pending JPH049552A (en) | 1990-04-27 | 1990-04-27 | Freezer device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH049552A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003106608A (en) * | 2001-09-26 | 2003-04-09 | Mitsubishi Heavy Ind Ltd | Air conditioner |
JP2015218959A (en) * | 2014-05-19 | 2015-12-07 | リンナイ株式会社 | Heat pump heating device |
-
1990
- 1990-04-27 JP JP11278690A patent/JPH049552A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003106608A (en) * | 2001-09-26 | 2003-04-09 | Mitsubishi Heavy Ind Ltd | Air conditioner |
JP2015218959A (en) * | 2014-05-19 | 2015-12-07 | リンナイ株式会社 | Heat pump heating device |
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