鮮肉柜高壓壓力控制器屬冷藏展示柜單體的壓力控制器，其作用是防止壓縮機的排氣壓力過高，一般安裝在壓縮機的排氣出口端。

　　動作原理：高壓氣體作用于高壓波紋管，當高壓壓力低于高壓給定值下限時，高壓調節彈簧克服來自波紋管的壓力，將傳動螺釘抬起，微動開關的按鈕隨之抬起，電路接通，壓縮機正常運轉;當高壓值超過高壓給定值上限時，高壓波紋管壓力克服彈簧力把傳動螺釘壓下，按下微動開關的按鈕，電路斷開，壓縮機停車。

　　鮮肉柜低壓壓力控制器

　　低壓壓力控制器也屬于冷藏展示柜單體的壓力控制器，其作用是防止壓縮機的吸氣壓力過低。它一般安裝在壓縮機的吸氣入口端，其外形結構、動作原理均與高壓壓力控制器相似。當低壓壓力低于正常設定值的下限時，低壓壓力保護器就動作，使壓縮機停車，當壓力回升后可自動復位開車。另外，在小型冷藏展示柜制冷裝置上，還可采用直接用控制吸氣壓力的辦法來控制壓縮機的停車和開車，進而實現柜溫的控制。
 

　　The high pressure pressure controller of the fresh meat cabinet belongs to the pressure controller of the refrigerated display cabinet. The function of the controller is to prevent the high pressure of the compressor exhaust, and it is generally installed at the outlet of the compressor.

　　Action principle: high pressure gas acts on high pressure bellows, when the pressure is lower than the lower limit of the given value of high pressure, the pressure regulating spring overcomes the pressure from the bellows, raises the drive screw, the button of the micro switch is raised, the circuit is connected, the compressor runs normally, and when the high pressure value exceeds the upper limit of the given value of the high pressure, the high pressure is higher. Press the bellows pressure to overcome the spring force to drive the screw down, press the button of the micro switch, the circuit is disconnected, and the compressor stops.

　　Low pressure pressure controller for fresh meat cabinet

　　The low pressure controller also belongs to the pressure controller of the refrigerating display cabinet monomer, and its function is to prevent the suction pressure of the compressor from being too low. It is generally installed in the intake port of the compressor, and its configuration and operation principle are similar to that of the high pressure controller. When the low pressure is lower than the lower limit of the normal setting value, the low pressure pressure protector acts so that the compressor stops. When the pressure rises, it can automatically reset and drive. In addition, in the small refrigerated display cabinet refrigeration device, the control of the compressor parking and driving can be controlled directly by the method of controlling the suction pressure directly, and the temperature of the cabinet can be controlled.