{
  "$type": "site.standard.document",
  "description": "Heat pump system for a vehicle and method for controlling same, which can, during mode changing between air heating and conditioning, prevent noise and vibration due to a pressure difference between refrigerants and reduce delay time. Heat pump system comprises a compressor compressing and…",
  "path": "/patents/1364072",
  "publishedAt": "2024-05-30T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60H1/3213",
    "Hanon Systems"
  ],
  "textContent": "Heat pump system for a vehicle and method for controlling same, which can, during mode changing between air heating and conditioning, prevent noise and vibration due to a pressure difference between refrigerants and reduce delay time. Heat pump system comprises a compressor compressing and discharging refrigerant, an indoor heat exchanger in air conditioning case, causing the refrigerant discharge from the compressor to heat the air, a first expansion valve for selectively expanding the refrigerant passed through the indoor heat exchanger, an evaporator in air conditioning case, enabling refrigerant to exchange heat with air evaporating refrigerant, and a controller for controlling the opening degree of the first expansion valve during mode changing between air heating and conditioning, wherein the controller turns off the compressor and gradually opens the first expansion valve to increase the opening degree when the mode is changed from the heat pump mode to the air conditioning mode.",
  "title": "HEAT PUMP SYSTEM FOR VEHICLE AND METHOD FOR CONTROLLING SAME"
}