JP2017047888A5

JP2017047888A5 -

Info

Publication number: JP2017047888A5
Application number: JP2016153835A
Authority: JP
Filing date: 2016-08-04
Publication date: 2017-10-12
Anticipated expiration: 2036-08-04

Description

上記目的を達成するため、請求項１に記載の発明では、
冷媒を吸入して吐出する圧縮機（５１）と、
圧縮機（５１）から吐出された冷媒と熱媒体とを熱交換させる高圧側熱交換器（３２）と、
高圧側熱交換器（３２）で熱交換された冷媒を減圧させる減圧部（５２）と、
減圧部（５２）で減圧された冷媒と熱媒体を熱交換させる低圧側熱交換器（３７）と、
車両に搭載されたエンジン（２１）に熱媒体を循環させるエンジン冷却回路（１１）と、
高圧側熱交換器（３２）で熱交換された熱媒体が循環する高温熱媒体回路（１２）と、
低圧側熱交換器（３７）で熱交換された熱媒体が循環する低温熱媒体回路（１３）と、
エンジン冷却回路（１１）、高温熱媒体回路（１２）および低温熱媒体回路（１３）の流体的な接続状態を切り替える切替部（４０、４１）と、
エンジン冷却回路（１１）と高温熱媒体回路（１２）とを連通させてエンジン冷却回路（１１）と高温熱媒体回路（１２）との圧力差を低減する高温側連通部（４３）と、
高温熱媒体回路（１２）と低温熱媒体回路（１３）とを連通させて高温熱媒体回路（１２）と低温熱媒体回路（１３）との圧力差を低減する低温側連通部（４４）とを備え、
エンジン冷却回路（１１）と高温熱媒体回路（１２）とが流体的に接続された場合、熱媒体が高温側連通部（４３）を介することなくエンジン冷却回路（１１）と高温熱媒体回路（１２）との間で循環することが可能になっており、
高温熱媒体回路（１２）と低温熱媒体回路（１３）とが流体的に接続された場合、熱媒体が低温側連通部（４４）を介することなく高温熱媒体回路（１２）と低温熱媒体回路（１３）との間で循環することが可能になっている。 In order to achieve the above object, in the invention described in claim 1,
A compressor (51) for sucking and discharging refrigerant;
A high-pressure side heat exchanger (32) for exchanging heat between the refrigerant discharged from the compressor (51) and the heat medium;
A decompression section (52) for decompressing the refrigerant heat-exchanged in the high-pressure side heat exchanger (32);
A low-pressure side heat exchanger (37) for exchanging heat between the refrigerant decompressed by the decompression unit (52) and the heat medium;
An engine cooling circuit (11) for circulating a heat medium to an engine (21) mounted on the vehicle;
A high-temperature heat medium circuit (12) in which the heat medium heat-exchanged in the high-pressure side heat exchanger (32) circulates;
A low-temperature heat medium circuit (13) in which the heat medium heat-exchanged in the low-pressure side heat exchanger (37) circulates;
Switching units (40, 41) for switching the fluid connection state of the engine cooling circuit (11), the high-temperature heat medium circuit (12), and the low-temperature heat medium circuit (13);
A high temperature side communication portion (43) for reducing the pressure difference between the engine cooling circuit (11) and the high temperature heat medium circuit (12) by communicating the engine cooling circuit (11) and the high temperature heat medium circuit (12);
A low temperature side communication section (44) for reducing the pressure difference between the high temperature heat medium circuit (12) and the low temperature heat medium circuit (13) by communicating the high temperature heat medium circuit (12) and the low temperature heat medium circuit (13); equipped with a,
When the engine cooling circuit (11) and the high-temperature heat medium circuit (12) are fluidly connected, the heat medium does not pass through the high-temperature side communication portion (43) and the engine cooling circuit (11) and the high-temperature heat medium circuit ( 12) can circulate with
When the high-temperature heat medium circuit (12) and the low-temperature heat medium circuit (13) are fluidly connected, the high-temperature heat medium circuit (12) and the low-temperature heat medium do not pass through the low-temperature side communication section (44). It is possible to circulate between the circuit (13).

上記目的を達成するため、請求項９に記載の発明では、
冷媒を吸入して吐出する圧縮機（５１）と、
圧縮機（５１）から吐出された冷媒と熱媒体とを熱交換させる高圧側熱交換器（３２）と、
車両に搭載されたエンジン（２１）に熱媒体を循環させるエンジン冷却回路（１１）と、
高圧側熱交換器（３２）で熱交換された熱媒体が循環する高温熱媒体回路（１２）と、
エンジン冷却回路（１１）および高温熱媒体回路（１２）の流体的な接続状態を切り替える切替部（４０、４１）と、
エンジン冷却回路（１１）および高温熱媒体回路（１２）の流体的な接続状態を切り替える切替部（４０、４１）と、
エンジン冷却回路（１１）と高温熱媒体回路（１２）とを連通させてエンジン冷却回路（１１）と高温熱媒体回路（１２）との圧力差を低減する高温側連通部（４３）と、
エンジン冷却回路（１１）の熱媒体を吸入して吐出するエンジンポンプ（２０、２２）と、
高温熱媒体回路（１２）の熱媒体を吸入して吐出する高温側ポンプ（３１）と、
高温側連通部（４３）における熱媒体の圧力に関連する物理量に基づいてエンジンポンプ（２０、２２）の作動を制御する制御部（６０）とを備え、
エンジン冷却回路（１１）と高温熱媒体回路（１２）とが流体的に接続された場合、熱媒体が高温側連通部（４３）を介することなくエンジン冷却回路（１１）と高温熱媒体回路（１２）との間で循環することが可能になっており、
高温熱媒体回路（１２）と低温熱媒体回路（１３）とが流体的に接続された場合、熱媒体が低温側連通部（４４）を介することなく高温熱媒体回路（１２）と低温熱媒体回路（１３）との間で循環することが可能になっている。 In order to achieve the above object, in the invention according to claim 9 ,
A compressor (51) for sucking and discharging refrigerant;
A high-pressure side heat exchanger (32) for exchanging heat between the refrigerant discharged from the compressor (51) and the heat medium;
An engine cooling circuit (11) for circulating a heat medium to an engine (21) mounted on the vehicle;
A high-temperature heat medium circuit (12) in which the heat medium heat-exchanged in the high-pressure side heat exchanger (32) circulates;
Switching units (40, 41) for switching the fluid connection state of the engine cooling circuit (11) and the high-temperature heat medium circuit (12);
Switching units (40, 41) for switching the fluid connection state of the engine cooling circuit (11) and the high-temperature heat medium circuit (12);
A high temperature side communication portion (43) for reducing the pressure difference between the engine cooling circuit (11) and the high temperature heat medium circuit (12) by communicating the engine cooling circuit (11) and the high temperature heat medium circuit (12);
Engine pumps (20, 22) for sucking and discharging the heat medium of the engine cooling circuit (11);
A high temperature side pump (31) for sucking and discharging the heat medium of the high temperature heat medium circuit (12);
A control unit (60) for controlling the operation of the engine pump (20, 22) based on a physical quantity related to the pressure of the heat medium in the high temperature side communication unit (43) ,
When the engine cooling circuit (11) and the high-temperature heat medium circuit (12) are fluidly connected, the heat medium does not pass through the high-temperature side communication portion (43) and the engine cooling circuit (11) and the high-temperature heat medium circuit ( 12) can circulate with
When the high-temperature heat medium circuit (12) and the low-temperature heat medium circuit (13) are fluidly connected, the high-temperature heat medium circuit (12) and the low-temperature heat medium do not pass through the low-temperature side communication section (44). It is possible to circulate between the circuit (13).

Claims

A compressor (51) for sucking and discharging refrigerant;
A high pressure side heat exchanger (32) for exchanging heat between the refrigerant discharged from the compressor (51) and a heat medium;
A decompression unit (52) for decompressing the refrigerant heat-exchanged in the high-pressure side heat exchanger (32);
A low-pressure side heat exchanger (37) for exchanging heat between the refrigerant decompressed by the decompression unit (52) and the heat medium;
An engine cooling circuit (11) for circulating the heat medium to an engine (21) mounted on the vehicle;
A high-temperature heat medium circuit (12) through which the heat medium heat-exchanged in the high-pressure side heat exchanger (32) circulates;
A low-temperature heat medium circuit (13) in which the heat medium heat-exchanged in the low-pressure side heat exchanger (37) circulates;
A switching unit (40, 41) for switching a fluid connection state of the engine cooling circuit (11), the high temperature heat medium circuit (12), and the low temperature heat medium circuit (13);
A high temperature side communication section (43) that reduces the pressure difference between the engine cooling circuit (11) and the high temperature heat medium circuit (12) by communicating the engine cooling circuit (11) and the high temperature heat medium circuit (12). )When,
A low-temperature side communication section that reduces the pressure difference between the high-temperature heat medium circuit (12) and the low-temperature heat medium circuit (13) by communicating the high-temperature heat medium circuit (12) and the low-temperature heat medium circuit (13). (44) and equipped with a,
When the engine cooling circuit (11) and the high temperature heat medium circuit (12) are fluidly connected, the heat medium does not pass through the high temperature side communication portion (43) and the engine cooling circuit (11). It is possible to circulate between the high temperature heat medium circuit (12),
When the high-temperature heat medium circuit (12) and the low-temperature heat medium circuit (13) are fluidly connected, the high-temperature heat medium circuit (12) does not pass through the low-temperature side communication part (44). ) And the low-temperature heat medium circuit (13) .

A compressor (51) for sucking and discharging refrigerant;
A high pressure side heat exchanger (32) for exchanging heat between the refrigerant discharged from the compressor (51) and a heat medium;
An engine cooling circuit (11) for circulating the heat medium to an engine (21) mounted on the vehicle;
A high-temperature heat medium circuit (12) through which the heat medium heat-exchanged in the high-pressure side heat exchanger (32) circulates;
A switching unit (40, 41) for switching a fluid connection state of the engine cooling circuit (11) and the high-temperature heat medium circuit (12);
A high temperature side communication section (43) that reduces the pressure difference between the engine cooling circuit (11) and the high temperature heat medium circuit (12) by communicating the engine cooling circuit (11) and the high temperature heat medium circuit (12). )When,
Engine pumps (20, 22) for sucking and discharging the heat medium of the engine cooling circuit (11);
A high temperature side pump (31) for sucking and discharging the heat medium of the high temperature heat medium circuit (12);
A control unit (60) for controlling the operation of the engine pump (20, 22) based on a physical quantity related to the pressure of the heat medium in the high temperature side communication unit (43) ,
When the engine cooling circuit (11) and the high temperature heat medium circuit (12) are fluidly connected, the heat medium does not pass through the high temperature side communication portion (43) and the engine cooling circuit (11). It is possible to circulate between the high temperature heat medium circuit (12),
When the high-temperature heat medium circuit (12) and the low-temperature heat medium circuit (13) are fluidly connected, the high-temperature heat medium circuit (12) does not pass through the low-temperature side communication part (44). ) And the low-temperature heat medium circuit (13) .