Ejector-type refrigeration cycle

Patent metadata

Field	Value
Publication number	US-10179500-B2
Application number	US-201515502606-A
Country	US
Kind code	B2
Filing date	Aug 7, 2015
Priority date	Aug 28, 2014
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

An ejector-type refrigeration cycle includes an ejector module integrated with a gas-liquid separation device. A length of an inlet pipe that connects a liquid-phase refrigerant outflow port of an ejector module to a refrigerant inflow port of an evaporator is shorter than a length of a suction pipe that connects a gas-phase refrigerant outflow port of the ejector module to a suction port of the compressor.

First claim

The invention claimed is:

1. An ejector-type refrigeration cycle comprising;
a compressor that compresses and discharges a refrigerant;
a radiator that radiates heat of the refrigerant discharged from the compressor;
an ejector module including a body portion that includes
a nozzle portion which reduces a pressure of the refrigerant which has flowed out of the radiator,
a refrigerant suction port which draws the refrigerant from an evaporator by a suction action the refrigerant ejected at high speed from the nozzle portion,
a pressure increase portion which mixes the ejected refrigerant with the drawn refrigerant drawn from the refrigerant suction port and increases a pressure of the mixed refrigerant of the ejected refrigerant and the drawn refrigerant,
a gas-liquid separation portion which separates the mixed refrigerant that has flowed out of the pressure increase portion into gas and liquid phases,
a liquid-phase refrigerant outflow port through which the liquid-phase refrigerant separated by the gas-liquid separation portion flows out, and
a gas-phase refrigerant outflow port through which the gas-phase refrigerant separated by the gas-liquid separation portion flows out;

the evaporator is separated from the ejector module and evaporates the liquid-phase refrigerant separated by the gas-liquid separation portion;
an inlet pipe that connects the liquid-phase refrigerant outflow port to a refrigerant inflow port of the evaporator; and
a suction pipe that connects the gas-phase refrigerant outflow port to a suction port of the compressor, wherein
a length of the inlet pipe is shorter than a length of the suction pipe,
a vehicle interior space in which the evaporator is disposed and a vehicle exterior space in which the radiator is disposed are partitioned by a partition plate,
a part of the ejector module is disposed in the vehicle interior space, and
another part of the ejector module is disposed in the vehicle exterior space.

2. The ejector-type refrigeration cycle according to claim 1 , wherein
the ejector module is disposed closer to the partition plate than to the compressor.

3. The ejector-type refrigeration cycle according to claim 2 , wherein
at least one of the inlet pipe and the suction pipe includes a portion that is connected to the ejector module and is shaped to extend along the partition plate.

4. The ejector-type refrigeration cycle according to claim 1 , the ejector-type refrigeration cycle being applied to a vehicle air conditioning apparatus, wherein
a length of the inlet pipe is equal to less than 2 meters.

5. The ejector-type refrigeration cycle according to claim 1 , wherein the ejector module is fixed to the partition plate.

6. The ejector-type refrigeration cycle according to claim 5 , wherein the ejector module is swingably fixed to the partition plate.

7. The ejector-type refrigeration cycle according to claim 1 , wherein the inlet pipe is connected to the part of the ejector module disposed in the vehicle interior space.

8. An ejector-type refrigeration cycle comprising:
a compressor that compresses and discharges a refrigerant;
a radiator that radiates heat of the refrigerant discharged from the compressor;
an ejector module including a body portion that includes
a nozzle portion which reduces a pressure of the refrigerant which has flowed out of the radiator,
a refrigerant suction port which draws the refrigerant from an evaporator by a suction action of the refrigerant ejected at high speed from the nozzle portion,
a pressure increase portion which mixes the ejected refrigerant with the drawn refrigerant drawn from the refrigerant suction port and increases a pressure of the mixed refrigerant of the ejected refrigerant and the drawn refrigerant,
a gas-liquid separation portion which separates the mixed refrigerant that has flowed out of the pressure increase portion into gas and liquid phases,
a liquid-phase refrigerant outflow port through which the liquid-phase refrigerant separated by the gas-liquid separation portion flows out, and
a gas-phase refrigerant outflow port through which the gas-phase refrigerant separated by the gas-liquid separation portion flows out; and

the evaporator is separated from the ejector module and evaporates the liquid-phase refrigerant separated by the gas-liquid separation portion, wherein
the ejector module is disposed closer to the evaporator than to the compressor,
a vehicle interior space in which the evaporator is disposed and a vehicle exterior space in which the radiator is disposed are partitioned by a partition plate,
a part of the ejector module is disposed in the vehicle interior space, and
another part of the ejector module is disposed in the vehicle exterior space.

9. The ejector-type refrigeration cycle according to claim 8 , wherein
the ejector module is disposed closer to the partition plate than to the compressor.

10. The ejector-type refrigeration cycle according to claim 9 , further comprising:
an inlet pipe that connects the liquid-phase refrigerant outflow port to a refrigerant inflow port of the evaporator; and
a suction pipe that extends from the gas-phase refrigerant outflow port to a suction port of the compressor, wherein
at least one of the inlet pipe and the suction pipe includes a portion that is connected to the ejector module and is shaped to extend along the partition plate.

11. The ejector-type refrigeration cycle according to claim 10 , the ejector-type refrigeration cycle being applied to a vehicle air conditioning apparatus, wherein
a length of the inlet pipe is equal to less than 2 meters.

12. An ejector-type refrigeration cycle comprising:
a compressor that compresses and discharges a refrigerant;
a radiator that radiates heat of the refrigerant discharged from the compressor;
an ejector module including a body portion that includes
a nozzle portion which reduces a pressure of the refrigerant which has flowed out of the radiator,
a refrigerant suction port which draws the refrigerant from an evaporator by a suction action of the refrigerant ejected at high speed from the nozzle portion,
a pressure increase portion which mixes the ejected refrigerant with the drawn refrigerant drawn from the refrigerant suction port and increases a pressure of the mixed refrigerant of the ejected refrigerant and the drawn refrigerant,
a gas-liquid separation portion which separates the mixed refrigerant that has flowed out of the pressure increase portion into gas and liquid phases,
a liquid-phase refrigerant outflow port through which the liquid-phase refrigerant separated by the gas-liquid separation portion flows out, and
a gas-phase refrigerant outflow port through which the gas-phase refrigerant separated by the gas-liquid separation portion flows out;

the evaporator is separated from the ejector module and evaporates the liquid-phase refrigerant separated by the gas-liquid separation portion;
an inlet pipe that connects the liquid-phase refrigerant outflow port to a refrigerant inflow port of the evaporator; and
a suction pipe that connects the gas-phase refrigerant outflow port to a suction port of the compressor, wherein
a length of the inlet pipe is shorter than a length of the suction pipe,
a vehicle interior space in which the evaporator is disposed and a vehicle exterior space in which the radiator is disposed are partitioned by a partition plate,
the ejector module is disposed closer to the partition plate than to the compressor,
at least a part of the ejector module is disposed in the vehicle interior space, and
at least a part of the ejector module is disposed to be cooled by a blown air that fl

Assignees

• Denso Corp

Inventors

• Kataoka Hiroshi
• Kurata Shun
• Takasugi Isamu
• Nishijima Haruyuki
• Nagano Youhei
• Yokoyama Yoshiyuki

Classifications

• B60H2001/3298

  Ejector-type refrigerant circuits · CPC title

• F04F5/46

  Arrangements of nozzles · CPC title

• F25B2341/0012

  Ejectors with the cooled primary flow at high pressure · CPC title

• B60H1/3204 Primary

  using compression (B60H1/3233 takes precedence) · CPC title

• F25B6/04

  arranged in series · CPC title