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US 9,285,171 B2Granted
Heat exchange system and vehicle refrigeration cycle system
AssigneeDenso Corporation
InventorsYoshiki Katoh, Satoshi Itoh
Life of this patent
Estimating the term…
Abstract
A unified heat exchanger includes a first heat exchanging arrangement and a second heat exchanging arrangement. The first heat exchanging arrangement is adapted to exchange heat between high pressure refrigerant and conditioning air. The second heat exchanging arrangement is adapted to exchange heat between low pressure refrigerant and the conditioning air. The first heat exchanging arrangement and the second heat exchanging arrangement are integrated together and are arranged to enable heat exchange of the conditioning air with both of the high pressure refrigerant and the low pressure refrigerant.
Claims20
A heat exchange system comprising:
- a unified heat exchanger that includes:
- a first heat exchanging arrangement that exchanges heat between first fluid and subject heat exchanging fluid;
- and
- a second heat exchanging arrangement that exchanges heat between second fluid and the subject heat exchanging fluid, wherein:
- a temperature of the first fluid, which is supplied to the first heat exchanging arrangement is different from a temperature of the second fluid, which is supplied to the second heat exchanging arrangement;
- the first heat exchanging arrangement and the second heat exchanging arrangement are integrated together and are arranged to enable heat exchange of the subject heat exchanging fluid with both of the first fluid and the second fluid;
- a temperature of the subject heat exchanging fluid at the unified heat exchanger is adjustable by adjusting at least one of an amount of heat exchange between the first fluid and the subject heat exchanging fluid at the first heat exchanging arrangement and an amount of heat exchange between the second fluid and the subject heat exchanging fluid at the second heat exchanging arrangement;
- the heat exchange system further comprises a heat exchange amount adjusting mechanism, which adjusts at least one of the amount of heat exchange between the first fluid and the subject heat exchanging fluid at the first heat exchanging arrangement, and the amount of heat exchange between the second fluid and the subject heat exchanging fluid at the second heat exchanging arrangement;
- the first heat exchanging arrangement includes a plurality of first fluid side tubes, which conduct the first fluid;
- the second heat exchanging arrangement includes a plurality of second fluid side tubes, which conduct the second fluid;
- the plurality of first fluid side tubes and the plurality of second fluid side tubes each have a first row and a second row arranged in a flow direction of the subject heat exchanging fluid;
- the plurality of first fluid side tubes and the plurality of second fluid side tubes are held between a first header tank and a second header tank, the first header tank having a first distributing space that conducts the first fluid from a first inflow conduit to the first row of the plurality of first fluid side tubes and a first collecting space that conducts the first fluid from the second row of the plurality of first fluid side tubes to a first outflow conduit, and the second header tank having a second distributing space that conducts the second fluid from a second inflow conduit to the first row of the plurality of second fluid side tubes and a second collecting space that conducts the second fluid from the second row of the plurality of second fluid side tubes to a second outflow conduit;
- a subject heat exchanging fluid passage is formed between an outer surface of a corresponding one of the plurality of first fluid side tubes and an outer surface of a corresponding one of the plurality of second fluid side tubes to conduct the subject heat exchanging fluid;
- at least one tube selected from one of the plurality of first fluid side tubes and the plurality of second fluid side tubes is interposed between and is spaced from adjacent two tubes selected from the other one of the plurality of first fluid side tubes and the plurality of second fluid side tubes to form the subject heat exchanging fluid passage between the at least one tube selected from the one of the plurality of first fluid side tubes and the plurality of second fluid side tubes and each of the adjacent two tubes selected from the other one of the plurality of first fluid side tubes and the plurality of second fluid side tubes;
- an outer fin is placed in the subject heat exchanging fluid passage to promote heat exchange at each of the first heat exchanging arrangement and the second heat exchanging arrangement;
- the first heat exchanging arrangement is a heating heat exchanging arrangement that heats the subject heat exchanging fluid by exchanging the heat between the first fluid, which flows through the plurality of first fluid side tubes, and the subject heat exchanging fluid, which flows around the plurality of first fluid side tubes;
- and
- the second heat exchanging arrangement is a cooling heat exchanging arrangement that cools the subject heat exchanging fluid by exchanging the heat between the second fluid, which flows through the plurality of second fluid side tubes, and the subject heat exchanging fluid, which flows around the plurality of second fluid side tubes.
15 more elements
A vehicle refrigeration cycle system that adjusts a temperature of first subject heat exchanging fluid, which is used to adjust a temperature of a first heat adjusting subject in a vehicle, and a temperature of a second subject heat exchanging fluid, which is used to adjust a temperature of a second heat adjusting subject in the vehicle, the vehicle refrigeration cycle system comprising:
- a compressor that compresses and discharges refrigerant;
- a radiator that releases heat from the refrigerant outputted from the compressor;
- a depressurizing mechanism that depressurizes the refrigerant outputted from the radiator;
- an evaporator that evaporates the refrigerant depressurized through the depressurizing mechanism;
- and
- a unified heat exchanger that includes a first heat exchanging arrangement, which receives the refrigerant as high pressure refrigerant, and a second heat exchanging arrangement, which receives the refrigerant as low pressure refrigerant, wherein:
- at least one of the radiator and the evaporator is used to adjust the temperature of the first subject heat exchanging fluid;
- the unified heat exchanger is used to adjust the temperature of the second subject heat exchanging fluid and includes a heat conduction promoting member, through which the heat is released to the second subject heat exchanging fluid;
- the first heat exchanging arrangement includes a plurality of high-pressure side tubes that conduct the high pressure refrigerant;
- the first heat exchanging arrangement is a heating heat exchanging arrangement that heats the second subject heat exchanging fluid by exchanging heat between the high pressure refrigerant, which flows through the plurality of high-pressure side tubes, and the second subject heat exchanging fluid;
- the second heat exchanging arrangement includes a plurality of low-pressure side tubes that conduct the low pressure refrigerant;
- the second heat exchanging arrangement is a cooling heat exchanging arrangement that cools the second subject heat exchanging fluid by exchanging heat between the low pressure refrigerant, which flows through the plurality of low-pressure side tubes, and the second subject heat exchanging fluid;
- the plurality of high-pressure side tubes and the plurality of low-pressure side tubes each have a first row and a second row arranged in a flow direction of the second subject heat exchanging fluid;
- the plurality of high-pressure side tubes and the plurality of low-pressure side tubes are held between a first header tank and a second header tank, the first header tank having a first distributing space that conducts the high pressure refrigerant from a first inflow conduit to the first row of the plurality of high-pressure side tubes and a first collecting space that conducts the high pressure refrigerant from the second row of the plurality of high-pressure side tubes to a first outflow conduit, and the second header tank having a second distributing space that conducts the low pressure refrigerant from a second inflow conduit to the first row of the plurality of low-pressure side tubes and a second collecting space that conducts the low pressure refrigerant from the second row of the plurality of low-pressure side tubes to a second outflow conduit;
- the first heat exchanging arrangement and the second heat exchanging arrangement are integrated together and are arranged to enable heat exchange of the second subject heat exchanging fluid with both of the high pressure refrigerant and the low pressure refrigerant;
- at least one of the plurality of high-pressure side tubes is placed between corresponding adjacent two of the plurality of low-pressure side tubes;
- at least one of the plurality of low-pressure side tubes is placed between corresponding adjacent two of the plurality of high-pressure side tubes;
- a subject heat exchanging fluid passage, which conducts the second subject heat exchanging fluid, is formed between a corresponding one of the plurality of high-pressure side tubes and a corresponding adjacent one of the plurality of low-pressure side tubes, while the corresponding adjacent one of the plurality of low-pressure side tubes is spaced from and is placed adjacent to the corresponding one of the plurality of high-pressure side tubes;
- and
- the heat conduction promoting member is placed in the subject heat exchanging fluid passage and is commonly used by the first heat exchanging arrangement and the second heat exchanging arrangement.
17 more elements
A vehicle refrigeration cycle system that adjusts a temperature of first subject heat exchanging fluid, which is used to adjust a temperature of a first heat adjusting subject in a vehicle, and a temperature of a second subject heat exchanging fluid, which is used to adjust a temperature of a second heat adjusting subject in the vehicle, the vehicle refrigeration cycle system comprising:
- a compressor that compresses and discharges refrigerant;
- a first utilizing side heat exchanger that exchanges heat between the refrigerant and the first subject heat exchanging fluid;
- an outdoor heat exchanger that exchanges heat between the refrigerant and outside air;
- a depressurizing mechanism that depressurizes the refrigerant;
- a second utilizing side heat exchanger that exchanges heat between the refrigerant and the first subject heat exchanging fluid;
- a refrigerant flow path switching mechanism that switches between:
- a refrigerant flow path that guides the refrigerant, which is outputted from the compressor as high pressure refrigerant, to the first utilizing side heat exchanger;
- and
- a refrigerant flow path that guide the refrigerant, which is outputted from the depressurizing mechanism as low pressure refrigerant, to the second utilizing side heat exchanger;
- and
- a unified heat exchanger that includes a first heat exchanging arrangement, which receives the high pressure refrigerant, and a second heat exchanging arrangement, which receives the low pressure refrigerant, wherein:
- the unified heat exchanger is used to adjust the temperature of the second subject heat exchanging fluid and includes a heat conduction promoting member, through which the heat is released to the second subject heat exchanging fluid;
- the first heat exchanging arrangement includes a plurality of high-pressure side tubes that conduct the high pressure refrigerant;
- the first heat exchanging arrangement is a heating heat exchanging arrangement that heats the second subject heat exchanging fluid by exchanging heat between the high pressure refrigerant, which flows through the plurality of high-pressure side tubes, and the second subject heat exchanging fluid;
- the second heat exchanging arrangement includes a plurality of low-pressure side tubes that conduct the low pressure refrigerant;
- the second heat exchanging arrangement is a cooling heat exchanging arrangement that cools the second subject heat exchanging fluid by exchanging heat between the low pressure refrigerant, which flows through the plurality of low-pressure side tubes, and the second subject heat exchanging fluid;
- the plurality of high-pressure side tubes and the plurality of low-pressure side tubes each have a first row and a second row arranged in a flow direction of the second subject heat exchanging fluid;
- the plurality of high-pressure side tubes and the plurality of low-pressure side tubes are held between a first header tank and a second header tank, the first header tank having a first distributing space that conducts the high pressure refrigerant from a first inflow conduit to the first row of the plurality of high-pressure side tubes and a first collecting space that conducts the high pressure refrigerant from the second row of the plurality of high-pressure side tubes to a first outflow conduit, and the second header tank having a second distributing space that conducts the low pressure refrigerant from a second inflow conduit to the first row of the plurality of low-pressure side tubes and a second collecting space that conducts the low pressure refrigerant from the second row of the plurality of low-pressure side tubes to a second outflow conduit;
- the first heat exchanging arrangement and the second heat exchanging arrangement are integrated together and are arranged to enable heat exchange of the second subject heat exchanging fluid with both of the high pressure refrigerant and the low pressure refrigerant;
- at least one of the plurality of high-pressure side tubes is placed between corresponding adjacent two of the plurality of low-pressure side tubes;
- at least one of the plurality of low-pressure side tubes is placed between corresponding adjacent two of the plurality of high-pressure side tubes;
- a subject heat exchanging fluid passage, which conducts the second subject heat exchanging fluid, is formed between a corresponding one of the plurality of high-pressure side tubes and a corresponding adjacent one of the plurality of low-pressure side tubes, while the corresponding adjacent one of the plurality of low-pressure side tubes is spaced from and is placed adjacent to the corresponding one of the plurality of high-pressure side tubes;
- and
- the heat conduction promoting member is placed in the subject heat exchanging fluid passage and is commonly used by the first heat exchanging arrangement and the second heat exchanging arrangement.
21 more elements
Dependencies are inferred from the claim text.