{
  "$type": "site.standard.document",
  "coverImage": {
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  "description": "HVAC module (200) has an air inlet (201), an evaporator (204) downstream of the blower and a heater (206) downstream of the evaporator (204), and a rear mixing zone (216) downstream of the evaporator (204) and the heater (206), wherein a control valve (290) prevents cold air from flowing back…",
  "path": "/patents/929096",
  "publishedAt": "2017-03-22T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60H1/00064",
    "MAHLE INT GMBH [DE]"
  ],
  "textContent": "HVAC module (200) has an air inlet (201), an evaporator (204) downstream of the blower and a heater (206) downstream of the evaporator (204), and a rear mixing zone (216) downstream of the evaporator (204) and the heater (206), wherein a control valve (290) prevents cold air from flowing back towards the hot air by regulating the pressure of the cold air. A method is devised to control anti-backflow control valve (290) of such an HVAC module (200) by the steps of reading pressure and temperatures at various points in the HVAC module (200); setting air flow and temperature discharge targets; calculating the resistance of the control valve (290) and a blend valve (224b); determining corresponding control valve (290) and blend valve (224b) positions; and moving the control valve (290) and blend valve (224b) to those corresponding positions.",
  "title": "HVAC MODULE WITH ANTI-BACKFLOW CONTROL AND METHOD OF OPERATION"
}