Refrigeration cycle device

A refrigeration cycle and refrigerant technology, applied in refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of complex cooling water circuit and achieve the effect of improving the efficiency of refrigeration cycle

Inactive Publication Date: 2018-01-26
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In the conventional technology described above, the flow of cooling water (in other words, the heat medium) is switched by the switching valve in order to heat or cool the equipment subject to temperature adjustment, so the cooling water circuit becomes complicated.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0087] figure 1 The illustrated refrigeration cycle device 10 is used to adjust a vehicle interior space to an appropriate temperature. In the present embodiment, the refrigeration cycle device 10 is applied to a hybrid vehicle that obtains driving force for vehicle travel from an engine (internal combustion engine) and a travel electric motor.

[0088] The hybrid vehicle according to the present embodiment is configured as a plug-in hybrid vehicle capable of charging a battery (vehicle battery) mounted on the vehicle with electric power supplied from an external power supply (commercial power supply) while the vehicle is parked. As the battery, for example, a lithium ion battery can be used.

[0089] The driving force output from the engine is used not only for driving the vehicle but also for operating the generator. In addition, the electric power generated by the generator and the electric power supplied from the external power source can be stored in the battery, and th...

no. 2 approach

[0248] In the above-mentioned embodiment, the expansion valve 15 is a two-way expansion valve that can depressurize and expand the refrigerant even if the refrigerant flows back. One-way expansion valve for decompression and expansion.

[0249] Such as Figure 11 , Figure 12 As shown, the refrigeration cycle apparatus 10 includes a refrigerant flow switching valve 17 for an expansion valve. The refrigerant flow switching valve 17 for an expansion valve keeps the refrigerant flow direction relative to the expansion valve 15 always in the same direction regardless of the air-conditioning mode. The expansion valve refrigerant flow switching valve 17 is a decompression refrigerant flow switching device that makes the flow direction of the refrigerant in the expansion valve 15 as a decompression device the same in the cooling mode and the heating mode. The operation of the expansion valve refrigerant flow switching valve 17 is controlled by the control device 40 .

[0250] The...

no. 3 approach

[0257] In the above-mentioned second embodiment, the air-refrigerant heat exchanger 12 has the gas-liquid separation part 122, and the first cooling water-refrigerant heat exchanger 13 has the gas-liquid separation part 132, but in this embodiment, as Figure 13 , Figure 14 As shown, an accumulator 18 is provided instead of the gas-liquid separators 122 and 132 .

[0258] The accumulator 18 is disposed between the refrigerant outflow port 16 b of the refrigerant flow switching valve 16 and the refrigerant suction port 11 a of the compressor 11 .

[0259] Such as Figure 13 As shown, when the air conditioning mode is the cooling mode, the refrigerant flowing out of the first coolant-refrigerant heat exchanger 13 flows into the accumulator 18 . The gas-liquid of the refrigerant is separated in the accumulator 18 , the separated gas-phase refrigerant is sucked into the compressor 11 , and the separated liquid-phase refrigerant is stored in the accumulator 18 .

[0260] Such a...

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Abstract

This refrigeration cycle device is provided with: a compressor (11) that suctions and discharges a coolant; an air-coolant heat exchanger (12) that exchanges heat between air and the coolant; an expansion valve (15) that reduces the pressure of the coolant; a heating medium-coolant heat exchanger (13) that exchanges heat between a heating medium and the coolant; a cold heat utilization apparatus (23) that uses the cold heat of the heating medium; a warm heat utilization apparatus (24) that uses the warm heat of the heating medium; a coolant flow switching valve (16) that switches between a heating medium cooling mode for cooling the heating medium with the heating medium-coolant heat exchanger (13) and a heating medium heating mode for heating the heating medium with the heating medium-coolant heat exchanger (13); and heating medium flow switching devices (25, 26) that switch the flow of the heating medium such that, in the heating medium cooling mode, the heating medium circulates between the heating medium-coolant heat exchanger (13) and the cold heat utilization apparatus (23), and in the heating medium heating mode, the heating medium circulates between the heating medium-coolant heat exchanger (13) and the warm heat utilization apparatus (24).

Description

[0001] Cross-reference of related applications [0002] This application is based on Japanese Patent Application No. 2015-140358 filed on July 14, 2015 and Japanese Patent Application No. 2016-101482 filed on May 20, 2016, the disclosures of which are incorporated herein by reference. technical field [0003] The present invention relates to a refrigeration cycle device including a heat medium-refrigerant heat exchanger for exchanging heat between a heat medium and a refrigerant. Background technique [0004] Conventionally, Patent Document 1 describes a refrigeration cycle device that uses the heat of cooling water heated by a heat exchanger on the high-pressure side of the refrigeration cycle to heat equipment to be heated, and uses the low-pressure side of the refrigeration cycle to Cool the cooling target equipment with the cold heat of the cooling water cooled by the heat exchanger. [0005] In this conventional refrigeration cycle device, a radiator is provided that e...

Claims

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Application Information

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IPC IPC(8): F25B1/00B60H1/22F25B5/04F25B6/04F25B39/00F25B47/02
CPCB60H1/00328B60H1/00907B60H1/3213F25B13/00B60H2001/00935B60H2001/00957F25B2313/003F25B2313/021F25B2313/0254F25B2313/02742B60H1/00007B60H1/3216F25B5/04F25B6/04F25B39/00F25B47/02
Inventor 加藤吉毅三浦功嗣杉村贤吾竹内雅之佐藤慧伍榎本宪彦桥村信幸
Owner DENSO CORP
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