Refrigeration device comprising multiple storage chambers

Patent metadata

Field	Value
Publication number	US-11092376-B2
Application number	US-201716075814-A
Country	US
Kind code	B2
Filing date	Jan 31, 2017
Priority date	Feb 19, 2016
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A refrigeration device has a first storage chamber, a second storage chamber and a refrigerant circuit, in which a first controllable throttle point, a first heat exchanger for controlling the temperature of the first storage chamber, a second controllable throttle point and a second heat exchanger for cooling the second storage chamber are connected in series between a pressure connection and a suction connection. A hot line section, located upstream of the second heat exchanger, and a cold line section, located downstream of the second heat exchanger, are routed in thermal contact with respect to one another in order to form an internal heat exchanger. The first heat exchanger is connected to the pressure connection bypassing the hot line section.

First claim

The invention claimed is:

1. A refrigeration device, comprising:
a first storage chamber and a second storage chamber;
a refrigerant circuit having a first controllable throttle point, a first heat exchanger for controlling a temperature of said first storage chamber, a second controllable throttle point, and a second heat exchanger for cooling said second storage chamber, wherein said first controllable throttle point, said first heat exchanger, said second controllable throttle point, and said second heat exchanger are connected in series between a pressure connection and a suction connection;
a hot line section disposed upstream of said second heat exchanger and a cold line section disposed downstream of said second heat exchanger; and
a bypass line branch containing a third controllable throttle point and a third heat exchanger connected upstream of said second heat exchanger and connected in parallel with a line branch containing said first controllable throttle point and said first heat exchanger;
said hot line section and said cold line section being routed in thermal contact with one another to form an inner heat exchanger; and
said first heat exchanger being connected to the pressure connection in a way bypassing said hot line section;
wherein said hot line section is connected in said bypass line branch;
wherein the bypass line branch comprises a fourth controllable throttle point downstream of said third heat exchanger and said hot line section is connected between said third heat exchanger and said fourth controllable throttle point; and
wherein each of said first controllable throttle point, said second controllable throttle point, said third controllable throttle point, and said fourth controllable throttle point is a device selected from the group consisting of an expansion valve, and a configuration of two parallel lines in which a capillary is located in one of the two parallel lines and a shut-off valve is located in another one of the two parallel lines.

2. The refrigeration device according to claim 1 , further comprising a second inner heat exchanger having a hot line section connected between an outlet of said first heat exchanger or of said third heat exchanger and an inlet of said second heat exchanger.

3. The refrigeration device according to claim 2 , wherein a cold line section of said second inner heat exchanger is connected between an outlet of said second heat exchanger and the cold line section of said inner heat exchanger.

4. The refrigeration device according to claim 1 , wherein at least one throttle point selected from the group consisting of said first controllable throttle point, said second controllable throttle point, and said third controllable throttle point includes an expansion valve.

5. The refrigeration device according to claim 1 , wherein at least one throttle point selected from the group consisting of said first controllable throttle point, said second controllable throttle point, and said third controllable throttle point includes at least two parallel line branches and a valve for controlling the distribution of refrigerant to said at least two parallel line branches.

6. The refrigeration device according to claim 5 , wherein one of said at least two parallel line branches of said at least one throttle point includes a capillary.

7. The refrigeration device according to claim 5 , wherein one of said at least two parallel line branches of said at least one throttle point forms said hot line section of said second inner heat exchanger.

8. The refrigeration device according to claim 1 , comprising an electronic control unit configured to temperature control said first storage chamber to be at a high operating temperature near or above an ambient temperature surrounding the refrigeration device, and to temperature control said second storage chamber to be at a low operating temperature below the high operating temperature of said first storage chamber, wherein said first controllable throttle point and said second controllable throttle point are adjustable.

9. A refrigeration device, comprising:
a first storage chamber and a second storage chamber;
a refrigerant circuit having a first controllable throttle point, a first heat exchanger for controlling a temperature of said first storage chamber, a second controllable throttle point, and a second heat exchanger for cooling said second storage chamber, wherein said first controllable throttle point, said first heat exchanger, said second controllable throttle point, and said second heat exchanger are connected in series between a pressure connection and a suction connection;
a hot line section disposed upstream of said second heat exchanger and a cold line section disposed downstream of said second heat exchanger;
a bypass line branch containing a third controllable throttle point and a third heat exchanger connected upstream of said second heat exchanger and connected in parallel with a line branch containing said first controllable throttle point and said first heat exchanger; and
a second inner heat exchanger;
said hot line section and said cold line section being routed in thermal contact with one another to form an inner heat exchanger; and
said first heat exchanger being connected to the pressure connection in a way bypassing said hot line section;
wherein said hot line section is connected in said bypass line branch;
wherein said hot line section is connected upstream of said third heat exchanger;
wherein said second inner heat exchanger has a hot line section connected between an outlet of said first heat exchanger or of said third heat exchanger and an inlet of said second heat exchanger; and
wherein each of said first controllable throttle point, said second controllable throttle point, and said third controllable throttle point is a device selected from the group consisting of an expansion valve, and a configuration of two parallel lines in which a capillary is located in one of the two parallel lines and a shut-off valve is located in another one of the two parallel lines.

10. The refrigeration device according to claim 9 , wherein a cold line section of said second inner heat exchanger is connected between an outlet of said second heat exchanger and the cold line section of said inner heat exchanger.

Assignees

• Bsh Hausgeraete Gmbh

Inventors

• Babucke Andreas
• Liengaard Niels

Classifications

• F25B2341/062

  Capillary expansion valves · CPC title

• F25B5/00

  Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity (with cascade operation F25B7/00) · CPC title

• F25B40/00

  Subcoolers, desuperheaters or superheaters · CPC title

• F25B2400/052

  between the capillary tube and another part of the refrigeration cycle · CPC title

• F25B41/39

  Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator · CPC title