Heat pump system and cooling generation method

Patent metadata

Field	Value
Publication number	US-10648710-B2
Application number	US-201716078130-A
Country	US
Kind code	B2
Filing date	Mar 3, 2017
Priority date	Mar 30, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A heat pump system generates cooling by evaporating a refrigerant using an evaporator, and generates cooling by using a compressor to desorb refrigerant that has been evaporated by the evaporator and adsorbed at an adsorption device.

First claim

The invention claimed is:

1. A heat pump system comprising:
an evaporator that cools a cooling target by evaporation of a refrigerant;
a compressor that compresses the refrigerant in a gaseous phase; and
an adsorption device at which the refrigerant evaporated at the evaporator is adsorbed, and that cools the cooling target by desorption of the refrigerant by movement of the refrigerant toward the compressor, wherein
the cooling target flows through at least one of the evaporator or the adsorption device, and
heat generated by cooling is expelled in a case in which the cooling target flows through the evaporator.

2. The heat pump system of claim 1 , further comprising:
a condenser that condenses the refrigerant compressed by the compressor; and
an expander that causes the refrigerant condensed by the condenser to expand and conveys the refrigerant to the evaporator.

3. The heat pump system of claim 1 , wherein a plurality of the adsorption devices are disposed in parallel with respect to a movement direction of the refrigerant, between the evaporator and the compressor.

4. The heat pump system of claim 3 , wherein the cooling target flows through, and is cooled by, the evaporator and an adsorption device, among the plurality of adsorption devices, at which refrigerant is desorbed.

5. The heat pump system of claim 4 , wherein the refrigerant is desorbed using the compressor, from an adsorption device, among the plurality of adsorption devices, that has already adsorbed the refrigerant evaporated at the evaporator.

6. The heat pump system of claim 1 , wherein the adsorption device adsorbs the refrigerant at a saturated vapor pressure of the refrigerant in the evaporator.

7. A cooling generation method comprising:
generating cooling by evaporating refrigerant using an evaporator; and
generating cooling by desorbing, using a compressor, the refrigerant from an adsorption device that has already adsorbed the refrigerant evaporated at the evaporator, wherein
a cooling target flows through at least one of the evaporator or the adsorption device, and
heat generated by cooling is expelled in a case in which the cooling target flows through the evaporator.

8. The cooling generation method of claim 7 , further comprising:
providing a plurality of the adsorption devices; and
while the refrigerant evaporated at the evaporator is being absorbed in at least one of the adsorption devices, using the compressor to desorb the refrigerant from at least another one of the adsorption devices.

Assignees

• Toyota Chuo Kenkyusho Kk

Inventors

• Hirota Yasuki
• Iwata Ryuichi
• Shinagawa Tsutomu
• Yamauchi Takafumi

Classifications

• B60H1/3201

  using absorption or adsorption · CPC title

• F25B25/02 Primary

  Compression-sorption machines, plants, or systems · CPC title

• B60H1/00899

  Controlling the flow of liquid in a heat pump system (controlling the properties of the refrigerant liquid, e.g. pressure or temperature, B60H1/3204) · CPC title

• F25B17/083

  with two or more boiler-sorbers operating alternately · CPC title

• B60H1/3213

  for increasing the efficiency in a vehicle heat pump · CPC title