JPS62213655A - Heat pump type air conditioner - Google Patents
Heat pump type air conditionerInfo
- Publication number
- JPS62213655A JPS62213655A JP61054809A JP5480986A JPS62213655A JP S62213655 A JPS62213655 A JP S62213655A JP 61054809 A JP61054809 A JP 61054809A JP 5480986 A JP5480986 A JP 5480986A JP S62213655 A JPS62213655 A JP S62213655A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- compressor
- air conditioner
- temperature sensor
- 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.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 claims description 24
- 230000005494 condensation Effects 0.000 claims description 12
- 238000009833 condensation Methods 0.000 claims description 12
- 238000005057 refrigeration Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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】
〔産業上の利用分野〕
本発明は圧縮機、室内側熱交換器、室外側熱交換器、膨
張弁、四方弁を主構成要素として形成される冷凍サイク
ルを備えたヒートポンプ式空気調和機に係り、特に膨張
弁の開度制御に関するう〔従来の技術〕
従来のヒートポンプ式空気調和機として、特開昭５８−
２０８５６８号に記載のように、圧縮機の吸入配管およ
び蒸発器の中間にそれぞれ温度センサーを設置し、各温
度センサーによって吸入ガス温度と蒸発温度を検出し、
両者の温度差が一定となるように冷媒流量制御弁の開度
を調節して流量を制御する方式がある。[Detailed Description of the Invention] [Field of Industrial Application] The present invention comprises a refrigeration cycle formed of a compressor, an indoor heat exchanger, an outdoor heat exchanger, an expansion valve, and a four-way valve as main components. Related to heat pump type air conditioners, especially regarding the opening degree control of expansion valves [Prior art] As a conventional heat pump type air conditioner, Japanese Patent Application Laid-Open No. 1983-
As described in No. 208568, temperature sensors are installed between the suction pipe of the compressor and the evaporator, and each temperature sensor detects the intake gas temperature and the evaporation temperature,
There is a method of controlling the flow rate by adjusting the opening degree of a refrigerant flow control valve so that the temperature difference between the two is constant.
上記ヒートポンプ式空気調和機においては、暖房運転時
には室外側熱交換器が、冷房運転時ＶＣは室内側熱交換
器がそれぞれ蒸発器として作用するので、蒸発温度検知
用の温就セ／−＋ｊ−が２個必要となる、つまり冷媒の
流量制御に３個の温度センサーを具える必要がある。ま
た、室内、室外の熱負荷変動に伴なって蒸発器の中間部
の冷媒、即ち温度センサー取付部分の冷媒が過熱したシ
する場合があり、常に安定した蒸発温度を検出できず、
正確な流量制御ができなくなる。In the above heat pump type air conditioner, the outdoor heat exchanger acts as an evaporator during heating operation, and the indoor heat exchanger acts as an evaporator during cooling operation. In other words, three temperature sensors are required to control the flow rate of the refrigerant. Additionally, as the heat load changes indoors and outdoors, the refrigerant in the middle of the evaporator, that is, the part where the temperature sensor is attached, may overheat, making it impossible to always detect a stable evaporation temperature.
Accurate flow control becomes impossible.
本発明の目的は、２個の温度センサーによって、常に正
確な流量制御を行うことができるヒートポンプ式空気調
和機を提供することにある。An object of the present invention is to provide a heat pump type air conditioner that can always perform accurate flow control using two temperature sensors.
四
上ａｔ目的は、圧縮機の吐出口からｉ方弁に至る冷媒配
管の途中より立上がるように分岐し、かつ自由端部を封
止した分岐管を設け、この分岐管の自由端部寄りに、該
分岐管内で凝縮される冷媒の凝縮温度を検出する第１温
度センサーを設ける一方、圧縮機の吐出ガス温度を検出
する第２温度センサーを設け、前記の第１．第２温度セ
ンサーにより検出される凝縮＠閃と吐出ガス温度との温
度差を算出し、その結果による信号を膨張弁に与えて開
度を制御する制−器を設ける構成とすることにより、達
成される。The purpose of Yokami AT is to provide a branch pipe that branches upward from the middle of the refrigerant pipe from the compressor discharge port to the i-way valve and seals the free end, and A first temperature sensor is provided to detect the condensation temperature of the refrigerant condensed in the branch pipe, and a second temperature sensor is provided to detect the discharge gas temperature of the compressor. This is achieved by installing a controller that calculates the temperature difference between the condensation @flash detected by the second temperature sensor and the discharge gas temperature, and sends a signal based on the result to the expansion valve to control its opening. be done.
分岐管に流入した冷媒はその自由端部で外気により冷却
されて凝縮し、その凝縮温度が第１温度センサーにより
検出される。また圧縮機の吐出ガス温度が第２温度セン
サーにより検出され、各温度センサーの検出信号が制御
器に入力される。制御器は凝縮温度と吐出ガス温度との
温度差を算出し、その結果による信号を膨張弁に出力し
て開度を制御する。前記分岐管内の凝縮冷媒は流下して
冷凍サイクル内に戻る。The refrigerant flowing into the branch pipe is cooled and condensed by the outside air at its free end, and the condensation temperature is detected by the first temperature sensor. Further, the discharge gas temperature of the compressor is detected by a second temperature sensor, and detection signals from each temperature sensor are input to the controller. The controller calculates the temperature difference between the condensation temperature and the discharge gas temperature, and outputs a signal based on the result to the expansion valve to control the opening degree. The condensed refrigerant in the branch pipe flows down and returns into the refrigeration cycle.
以下、本発明の一実施例を第１図、第２図により説明す
る。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は本発明によるヒートポンプ式荒気調和機の冷凍
サイクル図、第２図は第１図のＡ部拡大図金示す。図に
おいて、１は圧縮機、２は室内側熱交換器、３は室外側
熱交換器、４は膨張弁、５は四方弁で、これら各機器ｆ
ｉ図示のように配管接続されて冷凍サイクルと形成して
いる。この冷凍サイクルにおける圧縮機１の吐出口から
四方弁５に至る配管６Ｖｃは、該配管より分岐する分岐
管７が設けられている。この分岐管７はがき形をなして
立上がるように設けられ、かつ自由端部７ａが封止され
ている。また分岐管７は抹管のま＼、あるいけ冷却フィ
ンを有して外気と接触するようになっている。また、分
岐管７の自由端部７ａ寄りには、該分岐管７内で凝縮さ
れる冷媒の凝縮温度を検出する第１温度センサー８が設
置されている一方、圧縮機１の吐出管には、その吐出ガ
ス温度を検出する第２温度センサー９が設置されている
。また、前記の第１、第２一度センサー８．９ＶＣより
検出される凝縮温度と吐出ガス温度との温腿差を算出シ
フ、その結果による信号全膨張弁４Ｖｃ出力して開度を
制御する制御器１０が設けられている。FIG. 1 is a refrigeration cycle diagram of a heat pump type rough air conditioner according to the present invention, and FIG. 2 is an enlarged view of section A in FIG. 1. In the figure, 1 is a compressor, 2 is an indoor heat exchanger, 3 is an outdoor heat exchanger, 4 is an expansion valve, and 5 is a four-way valve.
i It is connected with piping as shown in the figure to form a refrigeration cycle. A pipe 6Vc extending from the discharge port of the compressor 1 to the four-way valve 5 in this refrigeration cycle is provided with a branch pipe 7 branching from the pipe. This branch pipe 7 is provided so as to stand up in a postcard shape, and the free end 7a is sealed. In addition, the branch pipe 7 is provided with cooling fins and comes into contact with the outside air. Further, a first temperature sensor 8 for detecting the condensation temperature of the refrigerant condensed in the branch pipe 7 is installed near the free end 7a of the branch pipe 7, while a first temperature sensor 8 is installed in the discharge pipe of the compressor 1. , a second temperature sensor 9 is installed to detect the temperature of the discharged gas. In addition, the temperature difference between the condensation temperature detected by the first and second sensors 8.9VC and the discharge gas temperature is calculated, and a signal based on the result is outputted to the full expansion valve 4Vc to control the opening degree. A container 10 is provided.
次に本笑施例の作用について説明する。Next, the operation of this embodiment will be explained.
暖房運転時は、圧縮機１より吐出される高温高圧の冷媒
が四方弁５を通って室内側熱交換器２に流入し、ここで
空気などＶζよシ冷却され凝縮液化する。その液冷媒は
ｊ膨張弁４で減圧された後、室外側熱交換器３Ｖｃ流入
し、ここで外部から熱全吸収［７て蒸発する。その後、
ガス冷媒は四方弁５を通って圧縮機１に吸入される。During heating operation, high-temperature, high-pressure refrigerant discharged from the compressor 1 flows into the indoor heat exchanger 2 through the four-way valve 5, where it is cooled by Vζ such as air and condensed into liquid. After the liquid refrigerant is depressurized by the expansion valve 4, it flows into the outdoor heat exchanger 3Vc, where it completely absorbs heat from the outside and evaporates. after that,
Gas refrigerant is drawn into the compressor 1 through the four-way valve 5.
上記の暖房時において、分岐管７日には配管６を流れる
ガセ冷媒の一部が流入し、外気により冷却されて凝縮液
化する。この液冷媒は分岐管７内壁に沿って流下して配
ｔ６に戻りサイクル内を循環する。そして液冷媒が分岐
管７円から流出すると同時に、配管６よりガス冷媒が分
岐管７内に流入する。一方、分岐管７内の液冷媒の凝縮
温度は第１温度センサー８により検出され、圧縮機１７
）吐出ガス温度は第２温度センサー９Ｖｃより検出され
、谷検出信号は制御器１０に入力される。制御器１０け
１疑縮温度と吐出ガス温度との温度差を算出し２、その
結果による信号を膨張弁４に出力して開度を制御器する
。これにより冷媒の流量が制御さね、る。During the above-mentioned heating, a part of the gaseous refrigerant flowing through the pipe 6 flows into the branch pipe 7, is cooled by the outside air, and is condensed and liquefied. This liquid refrigerant flows down along the inner wall of the branch pipe 7, returns to the distribution t6, and circulates within the cycle. Then, at the same time that the liquid refrigerant flows out from the branch pipe 7, gas refrigerant flows into the branch pipe 7 from the pipe 6. On the other hand, the condensation temperature of the liquid refrigerant in the branch pipe 7 is detected by the first temperature sensor 8, and the compressor 17
) The discharge gas temperature is detected by the second temperature sensor 9Vc, and the valley detection signal is input to the controller 10. The controller 10 calculates the temperature difference between the compression temperature and the discharge gas temperature 2, and outputs a signal based on the result to the expansion valve 4 to control the opening degree. This controls the flow rate of the refrigerant.
冷、屏運転時は、四方弁５が切戻わることによって、圧
縮機１より吐出される冷媒が、四方弁５、室外側熱交換
器３、膨張弁４、室内側熱交換器２１．四方弁５、圧縮
＠１の順に儂壌する、即ち暖房時とは逆に室内側熱交換
器２が凝縮器となり、室外側熱交換器３が蒸発器となる
。また、この時分岐管７内の凝縮温度が第１温度センサ
ー８により検出され、かつ吐出ガス温度が第２温度セン
サー９１／ｃより検出され、膨張弁４の開度が制御され
て冷媒の流量が制御される。During cold and folding operation, the four-way valve 5 is turned back, so that the refrigerant discharged from the compressor 1 is transferred to the four-way valve 5, the outdoor heat exchanger 3, the expansion valve 4, the indoor heat exchanger 21. The four-way valve 5 and the compression@1 are activated in this order, that is, the indoor heat exchanger 2 becomes a condenser and the outdoor heat exchanger 3 becomes an evaporator, contrary to the case during heating. At this time, the condensation temperature in the branch pipe 7 is detected by the first temperature sensor 8, and the discharge gas temperature is detected by the second temperature sensor 91/c, and the opening degree of the expansion valve 4 is controlled to control the flow rate of the refrigerant. is controlled.
従って、本実施例においては、分岐管７の凝縮温度を検
出する温度センサー８と、吐出ガス温度を検出する温度
センサー９との２個の温度センサーによって冷媒の流量
を制御することができる。Therefore, in this embodiment, the flow rate of the refrigerant can be controlled using two temperature sensors: the temperature sensor 8 that detects the condensation temperature of the branch pipe 7, and the temperature sensor 9 that detects the discharge gas temperature.
また、凝縮温度検出部の分岐管７においては、凝縮しだ
液冷媒が流下してサイクル内に戻ると同時にガス冷媒が
流入するという工程を繰り返すことになるので、第１温
健センサー９により安定した凝縮温度が検出される。そ
の結果、常に正確な冷媒流量の制御を行うことができる
。In addition, in the branch pipe 7 of the condensation temperature detection section, the process of condensed liquid refrigerant flowing down and returning to the cycle and at the same time gas refrigerant flowing in is repeated, so the first temperature sensor 9 stabilizes the flow. The condensation temperature is detected. As a result, accurate control of the refrigerant flow rate can be performed at all times.
尚、本発明においては、第３図に示すように配管６に、
傾斜して立上がる分岐管１７を設けるようにしてもよい
。In addition, in the present invention, as shown in FIG.
A branch pipe 17 that rises at an angle may be provided.
以上説明したように不発明によれば、２個の温度センサ
ーによって常に正確な流ｋ １ＵＩＪ ’＠１を行うこ
とができる。As explained above, according to the invention, accurate flow k 1UIJ '@1 can always be performed using two temperature sensors.
＠１図は本発明ヒートポンプ式空気調和機の一冥施例を
示す冷凍サイクル図、第２図は第１図のＡ部拡大図、第
３図は分岐管の変形例を示す図である。
１・・・圧縮機 ２・・・室内側熱交換器 ３・・
・室外側熱交換器 ４・・・膨張弁 ５・・・四方
弁７．１７・・・分岐管 ８・・・第１温度センサー
９・・・第２温度センサー １０・・・制御器。Figure 1 is a refrigeration cycle diagram showing a final example of the heat pump type air conditioner of the present invention, Figure 2 is an enlarged view of section A in Figure 1, and Figure 3 is a diagram showing a modification of the branch pipe. 1...Compressor 2...Indoor heat exchanger 3...
- Outdoor heat exchanger 4... Expansion valve 5... Four-way valve 7.17... Branch pipe 8... First temperature sensor 9... Second temperature sensor 10... Controller.
Claims (1)
方弁を主構成要素として形成される冷凍サイクルを備え
たヒートポンプ式空気調和機において、圧縮機の吐出口
から四方弁に至る冷媒配管の途中より立上がるように分
岐し、かつ自由端部を封止した分岐管を設け、この分岐
管の自由端部寄りに、該分岐管内で凝縮される冷媒の凝
縮温度を検出する第１温度センサーを設ける一方、圧縮
機の吐出ガス温度を検出する第２温度センサーを設け、
前記の第１、第２温度センサーにより検出される凝縮温
度と吐糸ガス温度との温度差を算出し、その結果による
信号を前記膨張弁に与えて開度を制御する制御器を設け
たことを特徴とするヒートポンプ式空気調和機。In a heat pump air conditioner equipped with a refrigeration cycle consisting of a compressor, an indoor heat exchanger, an outdoor heat exchanger, an expansion valve, and a four-way valve as the main components, from the discharge port of the compressor to the four-way valve. A branch pipe is provided that branches upward from the middle of the refrigerant pipe and has a sealed free end. One temperature sensor is provided, while a second temperature sensor is provided to detect the temperature of the discharge gas of the compressor,
A controller is provided that calculates the temperature difference between the condensation temperature detected by the first and second temperature sensors and the spun gas temperature, and gives a signal based on the result to the expansion valve to control the opening degree. A heat pump air conditioner featuring:
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61054809A JPS62213655A (en) | 1986-03-14 | 1986-03-14 | Heat pump type air conditioner |
| KR1019870000782A KR900003052B1 (en) | 1986-03-14 | 1987-01-31 | Refrigerant flow control system for use with refrigerator |
| DE8787102333T DE3763465D1 (en) | 1986-03-14 | 1987-02-19 | REFRIGERANT FLOW CONTROL SYSTEM FOR COOLERS. |
| EP87102333A EP0237822B1 (en) | 1986-03-14 | 1987-02-19 | Refrigerant flow control system for use with refrigerator |
| US07/016,404 US4706469A (en) | 1986-03-14 | 1987-02-19 | Refrigerant flow control system for use with refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61054809A JPS62213655A (en) | 1986-03-14 | 1986-03-14 | Heat pump type air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62213655A true JPS62213655A (en) | 1987-09-19 |
| JPH0377424B2 JPH0377424B2 (en) | 1991-12-10 |
Family
ID=12981046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61054809A Granted JPS62213655A (en) | 1986-03-14 | 1986-03-14 | Heat pump type air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62213655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012127525A (en) * | 2010-12-13 | 2012-07-05 | Sharp Corp | Air conditioner, method for controlling opening of expansion valve, and program |
-
1986
- 1986-03-14 JP JP61054809A patent/JPS62213655A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012127525A (en) * | 2010-12-13 | 2012-07-05 | Sharp Corp | Air conditioner, method for controlling opening of expansion valve, and program |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0377424B2 (en) | 1991-12-10 |
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