公开(公告)号：US20180023835A1

公开(公告)日：2018-01-25

申请号：US15549936

申请日：2016-03-10

Applicant: DENSO CORPORATION

Inventor： Mitsuo OOURA ,  Tatsuhiro MATSUKI ,  Tetsuya ITOU

IPC: F24F11/00 ,  F25B41/06

CPC classification number: F24F11/30 ,  F16K31/04 ,  F16K37/00 ,  F24F2110/10 ,  F25B41/062 ,  F25B2341/0653 ,  F25B2341/068 ,  F25B2341/0683 ,  F25B2600/2513

Abstract: An expansion valve device has a housing, a valve body, an actuator, a first, second, and third detectors, and a controller. The housing defines a first refrigerant path and a second refrigerant path therein. The first detector detects a temperature of the refrigerant flowing in the first refrigerant path. The second detector detects a temperature and a pressure of the refrigerant flowing on an upstream side of the valve body in the second refrigerant path. The third detector detects a temperature or a pressure of the refrigerant flowing on a downstream side of the valve body in the second refrigerant path. The controller calculates a flow rate of the refrigerant flowing in the second refrigerant path and a superheating degree of the refrigerant flowing in the first refrigerant path, and controls the opening degree of the valve body such that the superheating degree falls within a specified range.

公开(公告)号：US20210088246A1

公开(公告)日：2021-03-25

申请号：US17111882

申请日：2020-12-04

Applicant: DENSO CORPORATION

Inventor： Yuichi KAMI ,  Kengo SUGIMURA ,  Mitsuo OOURA

IPC: F24F11/46 ,  F24F11/64 ,  F24F11/67 ,  F24F11/89 ,  G05B19/042

Abstract: An air conditioner includes a heat medium circuit, a refrigerant cycle device, a discharge capacity controlling section, a heat generation amount controlling section, a target temperature determining section, and an upper limit determining section. The heat medium circuit includes a heating heat exchanger and an electric heater. The refrigerant cycle device exchanges heat between a heat medium in the heat medium circuit and a refrigerant discharged from an electric compressor. During a heater priority mode, the rotational speed of the compressor is increased to reach an upper limit and a heating amount of the heater is increased as a temperature difference increases. During a compressor priority mode, the heating amount of the heater is decreased and the rotational speed is increased to compensate for a decreasing amount.