公开(公告)号：US12215903B2

公开(公告)日：2025-02-04

申请号：US17947935

申请日：2022-09-19

Applicant: DENSO CORPORATION

Inventor： Tatsurou Kyuto ,  Yasuhiro Yokoo ,  Yoshinori Yanagimachi

IPC: F25B41/20 ,  F25B5/02 ,  F25B43/02

Abstract: A refrigeration cycle device includes: a switching valve configured to switch between a battery mode in which refrigerant flows to a battery heat exchanger and a non-battery mode in which the refrigerant bypasses the battery heat exchanger; and a controller controlling a compressor and the switching valve. The controller includes an estimation unit configured to estimate an oil stagnation amount, which is an amount of lubricating oil accumulated in the battery heat exchanger in accordance with execution of the non-battery mode. The controller includes a determination unit configured to determine whether lubricating oil in the battery heat exchanger needs to be recovered on the basis of the oil stagnation amount. The controller includes an execution unit configured to execute an oil recovery mode for recovery of lubricating oil in the battery heat exchanger when the determination unit determines that lubricating oil needs to be recovered.

公开(公告)号：US10137758B2

公开(公告)日：2018-11-27

申请号：US14428855

申请日：2013-09-05

Applicant: DENSO CORPORATION

Inventor： Yasuhiro Yokoo ,  Terukazu Higuchi ,  Yoshinori Yanagimachi

IPC: B60H1/00 ,  F25B5/04 ,  F25B6/04 ,  F25B49/02 ,  B60H1/32 ,  B60H1/22

Abstract: A vehicle air conditioner includes a heat pump cycle and a refrigerant-circuit controller. The heat pump cycle includes an inside heat exchanger and a refrigerant-circuit switching device. The inside heat exchanger performs heat exchange between a refrigerant and a blown air that is to be blown into a vehicle compartment. The refrigerant-circuit switching device switches between a refrigerant circuit of a cooling mode and a refrigerant circuit of a non-cooling mode. The refrigerant-circuit controller selects the cooling mode or the non-cooling mode based on an air-conditioning load, the refrigerant-circuit controller controlling an operation of the refrigerant-circuit switching device. Upon selecting the non-cooling mode, the refrigerant-circuit controller starts performing a cooling-mode unallowable control in which the refrigerant circuit of the cooling mode is prohibited from being selected regardless of the air-conditioning load.

公开(公告)号：US20150122472A1

公开(公告)日：2015-05-07

申请号：US14411149

申请日：2013-05-21

Applicant: DENSO CORPORATION

Inventor： Terukazu Higuchi ,  Yoshinori Yanagimachi ,  Yasuhiro Yokoo

IPC: B60H1/00 ,  F25B49/02

CPC classification number: B60H1/00735 ,  B60H1/00007 ,  B60H1/00849 ,  B60H1/3211 ,  B60H2001/3272 ,  F25B49/022

Abstract: A vehicle air-conditioning device includes a blower which blows air to a vehicle cabin through blowout openings, a refrigeration circuit through which refrigerant is circulated by an electric compressor, an interior heat exchanger disposed in the refrigeration circuit and exchanging heat between the refrigerant and a blown air, which is air that is blown by the blower, an interior/exterior air adjustment device adjusting a ratio of interior air and exterior air contained in the blown air, and a first blowing control portion controlling the electric compressor to stop, controlling the blower to operate, and controlling the interior/exterior air adjustment device such that air that is blown into the vehicle cabin includes at least exterior air, when a temperature difference between a target temperature Tao of air that is blown through the blowout opening and an exterior air temperature Tam is less than a predetermined value. In this case, when the temperature Tao is close to the temperature Tam, the electric compressor is stopped and air including exterior air is blown by the blower. Thus, a reduction in electric-power consumption can be achieved and a temperature of the air can get closer to Tao.

Abstract translation: 车辆空调装置包括通过吹出口将空气吹送到车厢的鼓风机，通过电动压缩机使制冷剂循环的制冷回路，配置在制冷回路中的内部热交换器，并且在制冷剂与a 由鼓风机吹送的空气的吹出空气，调节包含在吹出空气中的内部空气和外部空气的比例的内部/外部空气调节装置，以及控制电动压缩机停止的第一吹出控制部，控制 鼓风机进行操作，并且控制内部/外部空气调节装置，使得吹入车厢的空气至少包括外部空气，当通过吹出口吹入的空气的目标温度Tao与外部空气之间的温度差 空气温度Tam小于预定值。 在这种情况下，当温度Tao接近温度Tam时，电动压缩机停止，包括外部空气的空气被鼓风机吹送。 因此，可以实现电力消耗的降低，并且空气的温度可以更接近陶。

公开(公告)号：US10131197B2

公开(公告)日：2018-11-20

申请号：US14411146

申请日：2013-05-28

Applicant: DENSO CORPORATION

Inventor： Terukazu Higuchi ,  Yoshinori Yanagimachi ,  Yasuhiro Yokoo

IPC: B60H1/00 ,  B60H1/32

Abstract: When a battery control unit allows use of the electric compressor, an air conditioning control unit performs air-conditioning of a cabin in such a manner that the air conditioning control unit controls the electric compressor to be operated. When the battery control unit prevents use of the electric compressor, the air conditioning control unit controls the electric compressor to be stopped. In addition, the air conditioning control unit heats a windshield in such a manner that the air conditioning control unit controls a window heater to be operated. Accordingly, even when the electric compressor is stopped, fogging of the windshield is suppressed. The air conditioning control unit does not give an excessive feeling of discomfort or unease to a user, because the air conditioning control unit continuously performs a normal air-conditioning control. Fogging of the windshield can be suppressed in a state where power consumption relative to a battery is suppressed.

公开(公告)号：US20150246594A1

公开(公告)日：2015-09-03

申请号：US14428291

申请日：2013-09-02

Applicant: DENSO CORPORATION

Inventor： Yoshiharu Endoh ,  Yasuhiro Yokoo ,  Terukazu Higuchi

IPC: B60H1/32

CPC classification number: B60H1/321 ,  B60H2001/00961 ,  B60H2001/3263 ,  B60H2001/3282

Abstract: When a detection temperature detected by a refrigerant temperature sensor-is lower than a threshold value, it is determined to be YES at a frosting determining section as an exterior heat exchanger is frosted, an electric control unit reduces an air volume to be blown by an electric blower at an air-volume controlling section. Accordingly, an air volume blown from openings through the heating heat exchanger is reduced. In the result, an air volume passing through the heating heat exchanger can be reduced in a state where the heating heat exchanger heats an inside air using high-temperature high-pressure refrigerant when the exterior heat exchanger is frosted. Accordingly, a temperature of air after passing through the heating heat exchanger can be prevented from decreasing.

Abstract translation: 当由制冷剂温度传感器检测到的检测温度低于阈值时，由于外部热交换器结霜，所以在结霜判定部判定为“是”，电气控制部将通过 风量控制部的电动鼓风机。 因此，从通过加热热交换器的开口吹出的空气量减少。 结果，当外部热交换器磨砂时，在加热热交换器使用高温高压制冷剂加热内部空气的状态下，可以减少通过加热热交换器的空气量。 因此，可以防止通过加热热交换器后的空气的温度下降。

公开(公告)号：US20250018769A1

公开(公告)日：2025-01-16

申请号：US18903548

申请日：2024-10-01

Applicant: DENSO CORPORATION

Inventor： Kohei Noguchi ,  Yasuhiro Yokoo ,  Yoshiki Kato ,  Yukihisa Ijuin ,  Hiroaki Kawano ,  Yoshio Hayashi ,  Junki Hirayama ,  Naito Muto

IPC: B60H1/22 ,  B60H1/32 ,  F25B5/02 ,  F25B41/31

Abstract: A refrigeration cycle includes a compressor, a refrigerant radiator, first and second expansion valves configured to decompress refrigerant flowing out of the refrigerant radiator, a first evaporator configured to evaporate the refrigerant flowing out of the first expansion valve, and a second evaporator configured to evaporate the refrigerant flowing out of the second expansion valve. A heat medium circuit includes a heat exchange portion and circulates a heat medium while flowing through the heat exchange portion and the second evaporator. The first evaporator exchanges heat between the refrigerant and ventilation air blown to a space to be air conditioned, and the second evaporator exchanges heat between the heat medium and the refrigerant to evaporate the refrigerant and cool the heat medium. The heat exchange portion is made to cool the temperature regulation target.

公开(公告)号：US20240424864A1

公开(公告)日：2024-12-26

申请号：US18829542

申请日：2024-09-10

Applicant: DENSO CORPORATION

Inventor： Yukihisa IJUIN ,  Toru Okamura ,  Naoya Makimoto ,  Yoshio Hayashi ,  Yoshiki Kato ,  Hiroaki Kawano ,  Yasuhiro Yokoo ,  Junki Hirayama ,  Naito Muto ,  Kohei Noguchi

IPC: B60H1/00 ,  F25B41/31 ,  F25B49/02

Abstract: A first refrigeration cycle includes a first compressor, a first radiator, an air-conditioning expansion valve, an air-conditioning evaporator, a first expansion valve, and a first evaporator. In the first refrigeration cycle, a first refrigerant evaporates in at least one of the air-conditioning evaporator or the first evaporator. A second refrigeration cycle includes a second compressor, a second radiator, a second expansion valve, and a second evaporator. A heat transfer portion switches a heat radiation destination from the first radiator to a second refrigerant in the second evaporator or outside air. In the air-conditioning evaporator, the first refrigerant absorbs heat from ventilation air blown into a space to be air conditioned as the first refrigerant evaporates. In the first evaporator, the first refrigerant absorbs heat from the outside air as the first refrigerant evaporates. In the second radiator, the second radiator radiates heat from the second refrigerant to the ventilation air.

公开(公告)号：US20150239322A1

公开(公告)日：2015-08-27

申请号：US14428855

申请日：2013-09-05

Applicant: DENSO CORPORATION

Inventor： Yasuhiro Yokoo ,  Terukazu Higuchi ,  Yoshinori Yanagimachi

IPC: B60H1/00 ,  B60H1/32

CPC classification number: B60H1/00907 ,  B60H1/00921 ,  B60H1/00964 ,  B60H1/3205 ,  B60H2001/2228 ,  F25B5/04 ,  F25B6/04 ,  F25B49/02 ,  F25B2400/0409 ,  F25B2400/0411 ,  F25B2600/021 ,  F25B2600/2501 ,  F25B2700/1931 ,  F25B2700/2104 ,  F25B2700/2106 ,  F25B2700/21152 ,  F25B2700/2117

Abstract: A vehicle air conditioner includes: a heat pump cycle including an inside heat exchanger performing heat exchange between a refrigerant and a blown air that is to be blown into a vehicle compartment, and a refrigerant-circuit switching device that switches between a refrigerant circuit of a cooling mode in which the blown air is cooled in the inside heat exchanger and a refrigerant circuit of a non-cooling mode in which the blown air is not cooled in the inside heat exchanger; and a refrigerant-circuit controller that controls an operation of the refrigerant-circuit switching device. The refrigerant-circuit controller performs a cooling-mode unallowable control in which the refrigerant circuit of the cooling mode is prohibited from being selected after the non-cooling mode is selected during a predetermined time period.

Abstract translation: 一种车辆用空调装置，其特征在于，包括：热泵循环，其包括在制冷剂与被吹入车厢的吹入空气之间进行热交换的内部热交换器;以及制冷剂回路切换装置，其在 在内部热交换器中吹送空气被冷却的冷却模式和在内部热交换器中未冷却吹风的非冷却模式的制冷剂回路; 以及制冷剂回路控制器，其控制制冷剂回路切换装置的动作。 制冷剂回路控制器执行冷却模式不允许的控制，其中在预定时间段内选择非冷却模式之后禁止制冷模式的制冷剂回路被选择。

公开(公告)号：US20150183291A1

公开(公告)日：2015-07-02

申请号：US14411146

申请日：2013-05-28

Applicant: DENSO CORPORATION

Inventor： Terukazu Higuchi ,  Yoshinori Yanagimachi ,  Yasuhiro Yokoo

IPC: B60H1/00 ,  B60H1/32

CPC classification number: B60H1/00392 ,  B60H1/00428 ,  B60H1/00764 ,  B60H1/00785 ,  B60H1/00849 ,  B60H1/00885 ,  B60H1/3208

Abstract: When a battery control unit allows use of the electric compressor, an air conditioning control unit performs air-conditioning of a cabin in such a manner that the air conditioning control unit controls the electric compressor to be operated. When the battery control unit prevents use of the electric compressor, the air conditioning control unit controls the electric compressor to be stopped. In addition, the air conditioning control unit heats a windshield in such a manner that the air conditioning control unit controls a window heater to be operated. Accordingly, even when the electric compressor is stopped, fogging of the windshield is suppressed. The air conditioning control unit does not give an excessive feeling of discomfort or unease to a user, because the air conditioning control unit continuously performs a normal air-conditioning control. Fogging of the windshield can be suppressed in a state where power consumption relative to a battery is suppressed.

Abstract translation: 当电池控制单元允许使用电动压缩机时，空调控制单元以空调控制单元控制要运行的电动压缩机的方式执行机舱的空调。 当电池控制单元阻止使用电动压缩机时，空调控制单元控制电动压缩机停止。 此外，空调控制单元以使空调控制单元控制要加工的窗户加热器的方式加热挡风玻璃。 因此，即使电动压缩机停止，挡风玻璃的雾化也被抑制。 由于空调控制单元连续地执行正常的空调控制，所以空调控制单元不会给使用者带来过度的不适感或不舒服感。 在相对于电池的功率消耗被抑制的状态下，可以抑制挡风玻璃的雾化。