Junki Hirayama

Title: Junki Hirayama and Refrigeration Cycle Innovation.

Introduction

Junki Hirayama is an inventor associated with Kariya City, Japan, and Denso Corporation. His listed patent concerns a refrigeration cycle device designed to manage heat transfer across two refrigeration cycles.

Latest Patents

Hirayama is credited with 1 patent: “Refrigeration cycle device.” The invention describes a first refrigeration cycle with components including a compressor, radiator, expansion valves, and evaporators, alongside a second cycle with its own compressor, radiator, expansion valve, and evaporator. In the first cycle, refrigerant can evaporate in an air-conditioning evaporator, where it absorbs heat from ventilation air, or in another evaporator, where it absorbs heat from outside air. A heat-transfer portion can switch the heat-radiation destination from the first radiator to refrigerant in the second evaporator or to outside air. The second radiator transfers heat from its refrigerant to ventilation air.

Career Highlights

Hirayama’s listed work connects refrigeration-cycle design with air conditioning and heat management. The patent’s configuration describes how separate cycles and selectable heat-transfer paths can support different operating conditions.

Collaborations

Hirayama is associated with Denso Corporation. Yukihisa Ijuin is identified as a coworker.

Conclusion

Junki Hirayama’s listed patent presents a two-cycle refrigeration device that coordinates heat absorption and heat rejection for air conditioning and outside-air operation.