JPS6179171U

JPS6179171U -

Info

Publication number: JPS6179171U
Application number: JP16501784U
Authority: JP
Priority date: 1984-10-31
Filing date: 1984-10-31
Publication date: 1986-05-27

Description

[Brief explanation of the drawing]

第１図乃至第３図は本考案の一実施例を示し、
第１図は運転制御装置の概略回路図、第２図はオ
ープンシヨーケースの概略縦断面図、第３図は、
外気温度別に示した供給冷気温度の特性図である
。１…オープンシヨーケース、２…開口、８，９
…第１、第２熱交換器、１１…圧縮機、１６…第
１温度センサ、１８…第１増幅回路、１９…第２
温度センサ、２０…第２増幅回路、２７Ａ…比較
回路、２８…運転制御回路。 1 to 3 show an embodiment of the present invention,
Fig. 1 is a schematic circuit diagram of the operation control device, Fig. 2 is a schematic vertical cross-sectional view of the open show case, and Fig. 3 is a schematic diagram of the operation control device.
It is a characteristic diagram of the supply cold air temperature shown by outside air temperature. 1...Open case, 2...Opening, 8,9
...first and second heat exchangers, 11...compressor, 16...first temperature sensor, 18...first amplifier circuit, 19...second
Temperature sensor, 20...Second amplifier circuit, 27A...Comparison circuit, 28...Operation control circuit.

補正昭６０．９．１７実用新案登録請求の範囲を次のように補正する
。Amendment September 17, 1986 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】一側面に形成した商品収納及び取出用の開口に
冷気によるエアカーテンを形成してなるオープン
シヨーケースにおいて、蒸発器となる熱交換器で
熱交換された供給冷気の温度を検出する第１温度
センサと、外気温度を検出する第２温度センサと
、この第１、第２両温度センサからの信号を夫々
増幅する第１、第２増幅回路と、これら第１第２
両増幅回路夫々の出力を入力して比較する比較回
路と、この比較回路の出力に基づいて圧縮機の運
転を制御する運転制御回路とを備え、外気温度の
変化に伴ない前記第２増幅回路及び比較回路から
出力される信号を変化させ、この出力信号の変化
に基づき外気温度に対して供給冷気温度を反比例
制御してなるオープンシヨーケースの運転制御装
置。[Scope of Claim for Utility Model Registration] In an open show case in which an air curtain of cold air is formed in an opening for storing and taking out products formed on one side, the supplied cold air is heat-exchanged by a heat exchanger serving as an evaporator. A first temperature sensor that detects temperature, a second temperature sensor that detects outside temperature, first and second amplification circuits that amplify signals from both the first and second temperature sensors, and these first and second temperature sensors. 2
The second amplifier circuit includes a comparison circuit that inputs and compares the respective outputs of both amplifier circuits, and an operation control circuit that controls the operation of the compressor based on the output of the comparison circuit, and the second amplifier circuit and an operation control device for an open show case, which changes the signal output from the comparison circuit, and controls the supplied cold air temperature in inverse proportion to the outside air temperature based on the change in the output signal.

Claims

[Scope of utility model registration request]

In an open show case in which an air curtain of cold air is formed in an opening for storing and taking out products formed on one side, a first temperature sensor detects the temperature of the supplied cold air that has been heat exchanged with a heat exchanger serving as an evaporator. , a second temperature sensor that detects the outside temperature, first and second amplification circuits that amplify the signals from both the first and second temperature sensors, and these first and second temperature sensors.
The second amplifier circuit includes a comparison circuit that inputs and compares the respective outputs of both amplifier circuits, and an operation control circuit that controls the operation of the compressor based on the output of the comparison circuit, and the second amplifier circuit An operation control device for an open case that changes a signal output from a comparator circuit and controls a preset temperature inside the refrigerator in inverse proportion to the outside temperature based on changes in the output signal.