JPH0398112U

JPH0398112U -

Info

Publication number: JPH0398112U
Application number: JP614190U
Authority: JP
Priority date: 1990-01-29
Filing date: 1990-01-29
Publication date: 1991-10-11
Anticipated expiration: 2005-01-29
Also published as: JP2507341Y2

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例のシステム構成図
、第２図は同実施例の温度式膨張弁の感温部の断
面図、第３図は同実施例の制御装置の回路図、第
４図は本考案の第２実施例のシステム構成図、第
５図は従来の車両用空調装置のシステム構成図、
第６図は一般的な温度式膨張弁の構造図、第７図
は上記温度式膨張弁の制御特性線図、第８図は上
記温度式膨張弁の流量特性図である。１…エンジン、２…冷媒圧縮機、３…コンデン
サ、３ａ…フアン、３ｂ…レシーバ、４…温度式
膨張弁、５…エバポレータ、５ａ…フアン、６…
感温部、７Ｘ…温度センサまたは圧力センサ、７
Ｙ…エバポレータ空気吹出温度センサ、８…加熱
手段、１０…エバポレータ出口パイプ、１１…制
後装置、１２…比較器、１３…出力制後装置、１
４…設定器。 FIG. 1 is a system configuration diagram of the first embodiment of the present invention, FIG. 2 is a sectional view of the temperature sensing part of the thermostatic expansion valve of the same embodiment, and FIG. 3 is a circuit diagram of the control device of the same embodiment. FIG. 4 is a system configuration diagram of the second embodiment of the present invention, FIG. 5 is a system configuration diagram of a conventional vehicle air conditioner,
FIG. 6 is a structural diagram of a general temperature-type expansion valve, FIG. 7 is a control characteristic diagram of the temperature-type expansion valve, and FIG. 8 is a flow rate characteristic diagram of the temperature-type expansion valve. DESCRIPTION OF SYMBOLS 1... Engine, 2... Refrigerant compressor, 3... Condenser, 3a... Fan, 3b... Receiver, 4... Thermostatic expansion valve, 5... Evaporator, 5a... Fan, 6...
Temperature sensing part, 7X...Temperature sensor or pressure sensor, 7
Y... Evaporator air blowing temperature sensor, 8... Heating means, 10... Evaporator outlet pipe, 11... Restriction device, 12... Comparator, 13... Output restriction device, 1
4...Setting device.

補正平２．８．８実用新案登録請求の範囲を次のように補正する
。Amendment 8/8/199 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 (1) 車両走行用エンジンにより駆動される冷媒
圧縮機、冷媒ガスを液化させるコンデンサ、液化
冷媒を断熱膨張させる温度式膨張弁、同膨張弁を
介して液化冷媒を蒸発させるエバポレータ、およ
び同エバポレータの出口部温度を検出する前記温
度式膨張弁の感温部を、順次接続して冷凍サイク
ルを構成する車両用空調装置において、前記エバ
ポレータの冷媒温度または冷媒圧力検出するセン
サと、前記膨張弁の感温部を加熱する加熱手段と
を設けると共に、前記センサにより検出された前
記エバポレータの冷媒温度または冷媒圧力を、前
記加熱手段を作動して、設定された温度または圧
力に維持する制御手段を設けたことを特徴とする
車両用空調装置。 (2) 車両走行用エンジンにより駆動される冷媒
圧縮機、冷媒ガスを液化させるコンデンサ、液化
冷媒を断熱膨張させる温度式膨張弁、同膨張弁を
介して液化冷媒を蒸発させるエバポレータ、およ
び同エバポレータの出口部温度を検出する前記温
度式膨張弁の感温部を、順次接続して冷凍サイク
ルを構成する車両用空調装置において、前記エバ
ポレータの空気吹出温度を検出するセンサと、前
記膨張弁の感温部を加熱する加熱手段とを設ける
と共に、前記センサにより検出された前記エバポ
レータの空気吹出温度を、前記加熱手段を作動し
て、設定された温度に維持する制御手段を設けた
ことを特徴とする車両用空調装置。[Scope of Claim for Utility Model Registration] (1) A refrigerant compressor driven by a vehicle engine, a condenser that liquefies refrigerant gas, a thermostatic expansion valve that adiabatically expands the liquefied refrigerant, and a liquefied refrigerant through the expansion valve. In a vehicle air conditioner in which a refrigeration cycle is configured by sequentially connecting an evaporator to evaporate and a temperature-sensing section of the thermostatic expansion valve that detects the temperature at an outlet of the evaporator, the refrigerant temperature or refrigerant pressure of the evaporator is detected. A sensor and a heating means for heating the temperature sensing part of the expansion valve are provided, and the refrigerant temperature or refrigerant pressure of the evaporator detected by the sensor is adjusted to a set temperature or pressure by activating the heating means. An air conditioner for a vehicle, characterized in that it is provided with a control means for maintaining the air conditioner. (2) A refrigerant compressor driven by a vehicle running engine, a condenser that liquefies refrigerant gas, a thermostatic expansion valve that adiabatically expands the liquefied refrigerant, an evaporator that evaporates the liquefied refrigerant via the expansion valve, and the evaporator. In a vehicle air conditioner in which a refrigeration cycle is configured by sequentially connecting temperature-sensing parts of the thermostatic expansion valve that detect outlet temperature, a sensor that detects the air blowing temperature of the evaporator and a temperature-sensing part of the expansion valve are provided. and a control means for operating the heating means to maintain the air blowing temperature of the evaporator detected by the sensor at a set temperature . Vehicle air conditioner.

Claims

[Scope of Claim for Utility Model Registration] (1) A refrigerant compressor driven by a vehicle engine, a condenser that liquefies refrigerant gas, a thermostatic expansion valve that adiabatically expands the liquefied refrigerant, and a liquefied refrigerant through the expansion valve. In a vehicle air conditioner in which a refrigeration cycle is configured by sequentially connecting an evaporator to evaporate and a temperature-sensing part of the temperature-type expansion valve that detects the outlet temperature of the evaporator, the refrigerant temperature or refrigerant pressure of the evaporator is detected. and a heating means for heating the temperature sensing part of the expansion valve, and the refrigerant temperature or refrigerant pressure of the evaporator detected by the sensor,
An air conditioner for a vehicle, comprising a control means for operating the heating means and maintaining the temperature or pressure at a set temperature or pressure. (2) A refrigerant compressor driven by a vehicle running engine, a condenser that liquefies refrigerant gas, a thermostatic expansion valve that adiabatically expands the liquefied refrigerant, an evaporator that evaporates the liquefied refrigerant via the expansion valve, and the evaporator. In a vehicle air conditioner in which a refrigeration cycle is constructed by sequentially connecting temperature-sensing parts of the thermostatic expansion valve that detect outlet temperature, a sensor that detects the air blowing temperature of the evaporator and a temperature-sensing part of the expansion valve are provided. and a control means for operating the heating means to maintain the air blowing temperature of the evaporator detected by the sensor at a set temperature or pressure. Air conditioner for vehicles.