At least one method and container are described for maintaining a target temperature within the container. The container generally includes a vacuum insulated body; a lid couplable to the vacuum insulated body; a heatsink, coupled to the lid, wherein a portion of the heatsink is positionable within the vacuum insulated body; and at least one thermoelectric cell coupled to the heatsink, wherein the at least one thermoelectric cell is operated to promote the transfer of heat between the inside of the container and the outside of the container to cool the inside of the container or to warm the inside of the container. The container may be arranged so that internal and external portions of the heatsink may be arranged in a decoupled position to reduce heat transfer therebetween.

[Technical Problem] The problem of the present invention is to provide a fragrance diffuser which can diffuse a fragrance efficiently from a fragrance source with a calm atmosphere.

[Solution to Problem] A fragrance diffuser 1 of the present invention is provided. The fragrance diffuser 1 comprises a Peltier element 10 comprising the first surface 11 and the second surface 12, a heat source installed part 20 to install a heat source 21 to heat the first surface 11, a fragrance source installed part 30 to install a fragrance source 31, a fan 40 to send the air to the fragrance source installed part 30, a motor 50 to drive the fan 40 and a circuit 60 to supply electric power to the motor 50 from the Peltier element 10.

A mobile refreshment cart includes an open refreshment chamber exposed to an environment surrounding the refreshment cart and configured to receive refreshment containers therein. The mobile refreshment cart also includes a thermally conductive plate having a first surface facing the open refreshment chamber, and having a second surface opposite to the first surface. The mobile refreshment cart also includes a thermoelectric cooler coupled to, and directly contacting, the second surface of the thermally conductive plate. The thermoelectric cooler is configured to extract heat from the thermally conductive plate through the second surface of the thermally conductive plate. The refreshment cart also includes a fan configured to urge an air flow over a portion of the thermoelectric cooler and to the environment, such that the air flow extracts the heat from the thermoelectric cooler and expels the heat to the environment.

A method for controlling a refrigerator according to an embodiment of the present invention comprises: if an ultra-low temperature compartment mode is turned on, performing control such that one of low voltage, middle voltage, high voltage, and reverse voltage is applied to the thermoelectric module according to the operation mode of the refrigerator; and if the temperature of the ultra-low temperature compartment is determined to be in a satisfactory temperature range, applying low voltage to the thermoelectric module by the control unit.

The present invention relates to a heating and cooling holder for vehicles, and more particularly, to a heating and cooling holder for vehicles that can increase the efficiency of transferring heat to the beverage in a cup holder, so that hot and cold beverages can be made fast for consumption.

The above object of the present invention is achieved by the heating and cooling holder for vehicles comprised of a heat insulating cup 100 where a container accommodating part 110 is formed with an upper part opened so that a beverage container can be accommodated, a heat exchange cup 200 installed in the container accommodating part 110 formed in the heat insulating cup 100, a circulation duct 300 installed so that an air suction port 310 and an air exhaust port 320 are formed in the heat exchange cup 200, a circulation fan 700 that circulates air while introducing air into the heat exchange cup 200 through the air suction port 310 and the air exhaust port 320 formed in the circulation duct 300, a radiation plate 400 heat-exchanging the air introduced into the heat exchange cup 200 by the circulation fan 700 to re-supply to the heat exchange cup 200 through the circulation duct 300, and a thermoelectric element 600 installed so that the radiation plate 400 can absorb and generate heat.

In an entrance refrigerator, a printed circuit board (PCB) on which heat generating components are mounted is disposed inside a housing such that air used to cool a heat sink of a cold air supply device cools the PCB, thereby preventing overheating of the PCB.

A refrigerator includes an inner casing that defines a storage chamber and a cooling passage, a middle plate that is disposed outside the inner casing and that defines a foam space between the middle plate and the inner casing to accommodate a thermal-insulating material, an installation bracket that is fixed to the middle plate and that contacts the inner casing, a thermoelectric module mounted on the installation bracket and outside the foam space, and a fan assembly that is installed on the inner casing in the storage chamber and that includes a cooling fan.

A refrigeration unit includes: a refrigeration circuit including a compressor, a condenser, a thermal expansion valve, and an evaporator connected into a circuit; and a heat recovery system including a thermoelectric module, a control module and a battery; the thermoelectric module includes a first side and a second side, the first side being configured to establish a thermal connection with a first heat source and the second side being configured to establish a thermal connection with a second heat source, the first heat source and the second heat source having different temperatures, the thermoelectric module being configured to generate power by the temperature difference between the first heat source and the second heat source; and the control module is configured to store the power generated by the thermoelectric module to the battery, the battery being configured to drive the refrigeration circuit.

A refrigerator may include an inner casing having a storage chamber defined therein; and a thermoelectric module including a thermoelectric element for cooling the storage chamber, a cooling sink in contact with one surface of thermoelectric element, and a heat sink contacting the other surface of thermoelectric element, wherein the heat sink includes: a heat dissipation fin including a stack of a plurality of fins; a heat dissipation plate coupled to the heat dissipation fin; a heat dissipation pipe for connecting the heat dissipation plate to the heat dissipation fin, wherein the heat dissipation pipe is arranged to pass through the heat dissipation fin.

A portable cooler container is provided. In one implementation, the portable cooler has an active temperature control system that is operated to heat or cool a chamber of a vessel to approach a temperature set point.