Providing single servings of cooled foods and drinks
Systems and methods have demonstrated the capability of rapidly cooling the contents of pods containing the ingredients for food and drinks.
1. A machine for producing a single serving of a cooled food or drink, the machine comprising:
a refrigeration system comprising:
an evaporator defining a receptacle shaped and sized to receive a pod containing ingredients to produce the single serving of the cooled food or drink, the evaporator defining a plurality of channels for refrigerant, and the evaporator being movable between (i) an open configuration in which the pod is axially insertable into the receptacle and (ii) a closed configuration in which the pod is held in a fixed position within the receptacle;
a condenser; and
a working fluid loop from the evaporator, to the condenser, and back to the evaporator, the working fluid loop comprising:
a primary path between the condenser and the evaporator;
a first expansion valve or capillary tube located along the primary path;
a secondary path between the condenser and the evaporator and running in parallel to the primary path;
a second expansion valve or capillary tube located along the secondary path; and
a control valve located along the secondary path and configured to selectively open the secondary path in addition to the primary path reducing the pressure drop between the condenser and the evaporator; and
a processor configured to control the refrigeration system to open the control valve opening the secondary path such that refrigerant flows through the primary and secondary paths and through the plurality of channels of the evaporator to precool the receptacle defined by the evaporator before the pod containing the ingredients is received in the receptacle.
2. The machine of claim 1 , wherein the control valve is located upstream of the second expansion valve or capillary tube.
3. The machine of claim 1 , wherein the refrigeration system is configured such that refrigerant enters the evaporator at a lower pressure when the control valve is closed compared to when the control valve is open.
4. The machine of claim 1 , wherein the refrigeration system is configured such that refrigerant enters the evaporator at a lower temperature when the control valve is closed compared to when the control valve is open.
5. The machine of claim 1 , wherein the refrigeration system is configured to cool the receptacle defined by the evaporator when the pod is in the receptacle to cool the ingredients in the pod by flowing refrigerant through the primary and secondary paths and through the plurality of channels of the evaporator while the control valve is open.
6. The machine of claim 1 , wherein refrigerant enters the evaporator through an inlet port located at a bottom portion of the evaporator and refrigerant exits the evaporator through an outlet port located at the bottom portion of the evaporator.
7. The machine of claim 1 , wherein the machine is configured to, while the pod is received in the receptacle of the evaporator, (i) open a bottom portion of the pod, and (ii) dispense the produced single serving of the cooled food or drink from the opened bottom portion of the pod.
8. The machine of claim 1 , wherein the processor is configured to control the opening of the control valve based on a refrigerant temperature.
9. The machine of claim 1 , wherein the refrigeration system comprises a compressor and a bypass line connected from a first location between the compressor and the condenser to a second location upstream of the evaporator.
10. The machine of claim 1 , wherein the primary path and the secondary path are both upstream of the evaporator and downstream of the condenser.
11. The machine of claim 1 , wherein the primary path is always open to refrigerant flow.
12. The machine of claim 1 , wherein the primary path is void of control valves.
13. The machine of claim 1 , wherein selectively opening the secondary path in addition to the primary path causes the secondary path to supplement the primary path.
14. The machine of claim 1 , wherein the receptacle is an aluminum-walled receptacle, and the pod comprises an aluminum-walled container having a paddle movably disposed in the aluminum-walled container.
15. The machine of claim 1 , wherein the evaporator is a clamshell evaporator comprising an axis in which a first portion of the clamshell evaporator moves relative to a second portion of the clamshell evaporator when the evaporator moves between the open configuration and the closed configuration.
16. The machine of claim 1 , wherein the processor is configured to control a first movement of the evaporator from the open configuration to the closed configuration after the pod has been received in the evaporator to hold the pod in the fixed position while producing the single serving of the cooled food or drink.
17. The machine of claim 16 , wherein the processor is configured to control a second movement of the evaporator from the closed configuration to the open configuration after dispensing the single serving of the cooled food or drink from the pod to allow the pod to be removed from the receptacle.
18. A machine for producing a single serving of a cooled food or drink, the machine comprising:
a refrigeration system comprising:
an evaporator defining a receptacle shaped and sized to receive a pod containing ingredients to produce the single serving of the cooled food or drink, the evaporator being movable between (i) an open configuration in which the pod is axially insertable into the receptacle and (ii) a closed configuration in which the pod is held in a fixed position within the receptacle, the evaporator defining a plurality of channels for refrigerant;
a condenser; and
a working fluid loop from the evaporator, to the condenser, and back to the evaporator, the working fluid loop comprising:
a primary path between the condenser and the evaporator;
a secondary path between the condenser and the evaporator and running in parallel to the primary path; and
a control valve located along the secondary path and configured to selectively open the secondary path in addition to the primary path reducing the pressure drop between the condenser and the evaporator; and
a processor configured to control the refrigeration system to open the control valve opening the secondary path such that refrigerant flows through the primary and secondary paths and through the plurality of channels of the evaporator to cool the ingredients within the pod when the pod containing the ingredients is received in the receptacle.
19. The machine of claim 18 , wherein the evaporator comprises two inlet ports and two outlet ports.
20. The machine of claim 18 , wherein the refrigeration system comprises a rotary compressor.
21. The machine of claim 18 , wherein the refrigerant is a two-phase liquid-vapor refrigerant.
22. The machine of claim 18 , wherein the machine is configured to, while the pod is received in the receptacle of the evaporator, (i) open a bottom portion of the pod, and (ii) dispense the produced single serving of the cooled food or drink from the opened bottom portion of the pod.
23. The machine of claim 18 , wherein the plurality of channels of the evaporator comprise a plurality of longitudinal channels extending between one or more first manifolds defined by a top portion of the evaporator and one or more second manifolds defined by a bottom portion of the evaporator.
24. The machine of claim 18 , wherein the processor is configured to control the refrigeration system to precool the receptacle by opening the control valve and causing refrigerant to flow through the primary and secondary paths and through the plurality of channels of the evaporator before the pod is received in the receptacle.
25. The machine of claim 18 , wherein the processor is configured to control the opening of the control valve to control a temperature of refrigerant entering the evaporator.
26. The machine of claim 25 , wherein the processor is configured to control the opening of the control valve based on an operating load or condition of the machine.
27. The machine of claim 26 , wherein the operating load or condition comprises refrigerant temperature or pressure.
28. The machine of claim 25 , wherein refrigerant exits the evaporator through an outlet port located at a bottom portion of the evaporator.
29. The machine of claim 28 , wherein refrigerant enters the evaporator through an inlet port located at the bottom portion of the evaporator.
30. A machine for producing a single serving of a cooled food or drink from ingredients contained in a pod, the machine comprising a refrigeration system comprising:
an evaporator defining a receptacle shaped and sized to receive the pod containing ingredients to produce the single serving of the cooled food or drink, the evaporator defining a plurality of channels for refrigerant, and the evaporator being movable between (i) an open configuration in which the pod is axially insertable into the receptacle and (ii) a closed configuration in which the pod is held in a fixed position within the receptacle;
a condenser; and
a working fluid loop from the evaporator, to the condenser, and back to the evaporator, the working fluid loop comprising:
a primary path between the condenser and the evaporator;
a first expansion device located along the primary path;
a secondary path between the condenser and the evaporator and running in parallel to the primary path;
a second expansion device located along the secondary path; and
a control valve located along the secondary path and configured to selectively open the secondary path to supplement the primary path,
wherein the machine is configured such that when the control valve is open refrigerant flows through the primary and secondary paths and through the plurality of channels of the evaporator to cool the ingredients in the pod while the pod containing the ingredients is received in the evaporator.
31. The machine of claim 30 , wherein the first expansion device is a first expansion valve or capillary tube and the second expansion device is a second expansion valve or capillary tube.
32. The machine of claim 30 , wherein the refrigeration system is configured such that refrigerant enters the evaporator at a lower pressure when the control valve is closed compared to when the control valve is open.
33. The machine of claim 30 , wherein the refrigeration system is configured such that refrigerant flows through both the primary path and the secondary path when the control valve is open and refrigerant does not flow through the secondary path when the control valve is closed.
34. The machine of claim 30 , wherein the refrigeration system comprises a rotary compressor and a bypass line connected from a first location between the rotary compressor and the condenser to a second location upstream of the evaporator.
35. The machine of claim 30 , wherein the machine is configured to, while the pod is received in the receptacle of the evaporator, (i) open a bottom portion of the pod, and (ii) dispense the produced single serving of the cooled food or drink from the opened bottom portion of the pod.
36. The machine of claim 30 , wherein the refrigeration system is configured to precool the receptacle defined by the evaporator before the pod containing the ingredients is received in the receptacle by flowing refrigerant through the primary and secondary paths and through the plurality of channels of the evaporator while the control valve is open.
37. The machine of claim 30 , wherein the plurality of channels of the evaporator are integrally formed in one or more aluminum sidewalls of the evaporator, and inner surfaces of the one or more aluminum sidewalls define the receptacle.
38. The machine of claim 30 , comprising a processor configured to:
control the opening of the control valve; and
control a movement of the evaporator from the closed configuration to the open configuration after dispensing the single serving of the produced food or drink from the pod to allow the pod to be removed from the receptacle.
39. The machine of claim 30 , further comprising a processor configured to control the opening of the control valve to control an inlet temperature of refrigerant entering the evaporator.
40. The machine of claim 39 , wherein the processor is configured to control the opening of the control valve based on a refrigerant temperature.
41. The machine of claim 39 , wherein refrigerant enters the evaporator through an inlet port located at a bottom portion of the evaporator and refrigerant exits the evaporator through an outlet port located at the bottom portion of the evaporator.