Heat exchanger, manufacturing method, and device

A heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from outside and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein

• the evaporator comprises:
• a plate-shaped main body including a recess in a plate surface thereof, the recess being configured to accommodate the evaporating body;
• and
• a lid body configured to cover the recess of the main body and the evaporating body accommodated in the recess, and
• a pressure mark resulting from applying pressure to the main body, the lid body, and the evaporating body is formed on a plate surface of at least one of the main body and the lid body at a position outside a center of the recess.

A method for manufacturing a heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from outside and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein

• the evaporator includes:
• a plate-shaped main body including a recess in a plate surface thereof, the recess being configured to accommodate the evaporating body;
• and
• a lid body configured to cover the recess of the main body and the evaporating body accommodated in the recess,
• the method comprises steps of:
• forming the recess in the main body and forming a structural portion configured to make a depth of an outer portion of the recess shallower than a depth of a center of the recess;
• applying a material of the evaporating body to the recess and solidifying the material to form the evaporating body;
• and
• covering the recess accommodating the evaporating body with the lid body and sandwiching, by the structural portion and the lid body, the outer portion of the evaporating body accommodated in the recess.

A method for manufacturing a heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from outside and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein

• the evaporator comprises:
• a plate-shaped main body including a recess in a plate surface thereof, the recess being configured to accommodate the evaporating body;
• and
• a lid body configured to cover the recess of the main body and the evaporating body accommodated in the recess, and
• the method comprises steps of:
• forming the recess in the main body;
• forming a structural body configured to make a depth of an outer portion of the recess shallower than a depth of a center of the recess and make a thickness of a bottom of the outer portion of the recess greater than a thickness of a bottom of the center of the recess;
• applying a material of the evaporating body to the recess and solidifying the material to form the evaporating body;
• covering the recess accommodating the evaporating body with the lid body;
• and
• clamping each plate surface of the main body and the lid body covering the main body at portions thereof corresponding to the outer portion of the evaporating body accommodated in the recess, thereby compressing the evaporating body by the structural portion and the lid body.

A device comprising:

• a heating element;
• and
• a heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from the heating element and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein
• the evaporator comprises:
• a plate-shaped main body including a recess in a plate surface thereof, the recess being configured to accommodate the evaporating body;
• and
• a lid body configured to cover the recess of the main body and the evaporating body accommodated in the recess,
• the main body includes a structural portion configured to make a depth of an outer portion of the recess shallower than a depth of a center of the recess, and
• the outer portion of the evaporating body accommodated in the recess is sandwiched by the structural portion and the lid body.

A heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from outside and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein

• the evaporator comprises:
• a plate-shaped main body configured to accommodate the evaporating body, the main body being formed with a flow path for the working fluid on a plate surface thereof;
• a lid body configured to cover the evaporating body, accommodated in the main body, and the flow path;
• and
• a guide portion provided on a bottom of the flow path, the guide portion being configured to support the main body and the lid body within the flow path, the guide portion having a longitudinal direction extending along a flow direction of the working fluid, the guide portion being configured to guide the working fluid, and
• a length of the guide portion in the flow direction is shorter than a length of the flow path in a width direction.

A heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from outside and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein

• the evaporator comprises:
• a plate-shaped main body configured to accommodate the evaporating body, the main body being formed with a flow path for the working fluid on a plate surface thereof;
• a lid body configured to cover the evaporating body, accommodated in the main body, and the flow path;
• and
• a guide portion provided on a bottom of the flow path, the guide portion being configured to support the main body and the lid body within the flow path, the guide portion having a longitudinal direction extending along a flow direction of the working fluid, the guide portion being configured to guide the working fluid,
• a length of the guide portion in the flow direction is shorter than a length of the flow path in a width direction,
• a length of the guide portion in the width direction is greater than a thickness of the main body,
• a plurality of the guide portions are arranged at a predetermined interval along the flow direction within the flow path and at different positions in the width direction depending on positions in the flow direction, and
• the predetermined interval is longer than the length of the guide portion in the flow direction.

A method for manufacturing a heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from outside and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein

• the evaporator comprises:
• a plate-shaped main body configured to accommodate the evaporating body, the main body being formed with a flow path for the working fluid on a plate surface thereof;
• a lid body configured to cover the evaporating body, accommodated in the main body, and the flow path;
• and
• a guide portion provided on a bottom of the flow path, the guide portion being configured to support the main body and the lid body within the flow path, the guide portion having a longitudinal direction extending along a flow direction of the working fluid, the guide portion being configured to guide the working fluid,
• a length of the guide portion in the flow direction is shorter than a length of the flow path in a width direction, and
• the method comprises steps of:
• forming the flow path and the guide portion in the main body;
• covering the evaporating body accommodated in the main body and the flow path with the lid body;
• and
• heating the guide portion, configured to support the main body and the lid body within the flow path, using a heating unit configured to heat the guide portion from outside the main body and the lid body while moving along the flow direction, thereby connecting the main body and the lid body in a thickness direction of the main body.

A device comprising:

• a heating element;
• and
• a heat exchanger including an evaporator provided with an evaporating body, the evaporating body being configured to absorb heat from the heating element and evaporate a liquid-phase working fluid into a gas phase while moving the working fluid by capillary forces, the heat exchanger being configured to condense the gas-phase working fluid introduced from the evaporator and circulate the working fluid in a liquid phase back into the evaporator, wherein
• the evaporator comprises:
• a plate-shaped main body configured to accommodate the evaporating body, the main body being formed with a flow path for the working fluid on a plate surface thereof;
• a lid body configured to cover the evaporating body, accommodated in the main body, and the flow path;
• and
• a guide portion provided on a bottom of the flow path, the guide portion being configured to support the main body and the lid body within the flow path, the guide portion having a longitudinal direction extending along a flow direction of the working fluid, the guide portion being configured to guide the working fluid, and
• a length of the guide portion in the flow direction is shorter than a length of the flow path in a width direction.