An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.

A heat source unit for a refrigeration apparatus includes: a refrigerant circuit including a shut-off valve, a compressor, a heat exchanger, and a first refrigerant pipe positioned between the shut-off valve and the compressor; a fan that sends air to the heat exchanger; a casing that includes a side panel and that accommodates the refrigerant circuit and the fan; and a partitioning panel that partitions an internal space of the casing into a first space on the side panel side where the compressor is disposed, and a second space where the fan is disposed. The fan blows the air that has passed through the heat exchanger out to a front-surface side of the casing. The compressor, the shut-off valve, and the side panel are disposed in the stated order as the compressor, the shut-off valve, and the side panel as seen in a front view.

A refrigerator and a noise-reducing device mounted thereto are disclosed. The disclosed noise-reducing device, which comprises a hollow resonance chamber and a tubular acoustic filter inserted into the resonance chamber, is mounted at the side surface of a machine compartment, whereby not only heat due to the operation of a compressor is charged out of the machine compartment, but also noise transmitted from the compressor to the outside of the machine compartment is reduced through diffraction and resonance effects.

An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.

A refrigeration apparatus and a production method thereof. The refrigeration apparatus includes a silencing device. The silencing device includes a silencing channel, and the silencing channel is communicated with an inner vent of a compressor bin and an outer vent of a housing. The silencing device is provided in a foaming space and thus does not occupy a space inside the refrigeration apparatus. The compressor bin is connected with the outside through the silencing channel, thus reducing noise radiated outwards from the compressor bin.

A muffling device includes a muffling body, the muffling body having a sound ingress and egress surface, at least one muffling chamber is provided inside the muffling body, the sound ingress and egress surface is provided with at least one communication port, each of the communication port connecting one or more of the muffling chamber, each of the muffling chamber is connected to the outside of the sound ingress and egress surface through at least one of the communication port. When noise passes through the through-holes of the muffling device, the sound is transmitted through the communication ports into the muffling chamber, extending the sound propagation path, weakening the sound energy, and thereby reducing the sound that continues to disperse outward. Specifically, the length of at least one muffling chamber is between 0.0085 m to 0.85 m.

A refrigerator is described. The refrigerator includes a body. The refrigerator further includes a door. The refrigerator further includes a first rail guide and a second rail guide. The refrigerator further includes a first rail assembly and a second rail assembly. The refrigerator further includes a shaft that is configured to connect the first rail assembly with the second rail assembly. The refrigerator further includes a first pinion that is located at a first end of the shaft and configured to engage the first rail guide based on the door being pushed in or pulled out. The refrigerator further includes a second pinion that is located at a second end of the shaft and configured to engage the second rail guide based on the door being pushed in or pulled out. The refrigerator further includes a torsion reduction part that is configured to reduce torsion of the door.

An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.