Ice making system for creating clear ice and associated method

Patent metadata

Field	Value
Publication number	US-11644228-B2
Application number	US-202217580905-A
Country	US
Kind code	B2
Filing date	Jan 21, 2022
Priority date	Jul 22, 2020
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

An ice making system for creating clear ice and an associated method are provided. The ice making system employs a first sealed refrigerant system connected to a heat exchanger. A second sealed refrigerant system is also connected to the heat exchanger for cooling a first refrigerant of the first sealed refrigerant system. A heat exchanger heater is at least partially contained with the heat exchanger for heating the first refrigerant. A pump in the first refrigerant system is activated after heat exchanger heater has warmed the first refrigerant, enabling a cooling cycle to begin. Once sufficient clear ice has been generated, the pump is deactivated.

First claim

What is claimed is:

1. A method for making clear ice, comprising the steps of:
detecting a demand for ice;
activating a heat exchanger heater to heat a first refrigerant;
monitoring heat exchanger heater usage data;
activating a pump based on the heat exchanger heater usage data, the pump circulating the first refrigerant through a first sealed refrigerant system to remove heat from an ice holding chamber;
delivering water to a mold body from a water distribution manifold;
detecting that the demand for ice is satisfied; and
deactivating the pump.

2. The method of claim 1 , wherein the heat exchanger heater usage data is the length of time that the heater has run.

3. The method of claim 1 , wherein the heat exchanger heater usage data is the temperature of the first refrigerant.

4. The method of claim 1 , further comprising the step of adjusting the speed of a variable speed compressor for circulating a second refrigerant in a second sealed refrigeration system to remove heat from the first refrigerant.

5. The method of claim 1 , wherein the pump is a variable speed pump and the step of activating the pump further includes adjusting the speed of the pump to alter the circulation rate of the first refrigerant.

6. The method of claim 1 further comprising the step of activating an ice formation heater attached to the mold body to reduce the rate of ice formation.

7. The method of claim 1 further comprising the step of activating a water heater in fluid communication with the water distribution manifold to provide warm water to the mold body.

8. The method of claim 1 further comprising the step of adjusting a fluid control valve upstream from the water distribution manifold for controlling the flow of water to the water distribution manifold.

9. The method of claim 4 , wherein the step of circulating a second refrigerant in a second sealed refrigeration system further includes circulating the second refrigerant through a heat exchanger.

10. The method of claim 9 , wherein the step of circulating the first refrigerant through a first sealed refrigerant system further includes circulating the first refrigerant through the heat exchanger.

11. A method for making clear ice, comprising the steps of:
detecting a demand for ice;
activating a heat exchanger heater to heat a first refrigerant;
monitoring heat exchanger heater usage data;
activating a pump based on the heat exchanger heater usage data, the pump circulating the first refrigerant through a first sealed refrigerant system to remove heat from an ice holding chamber;
circulating a second refrigerant in a second sealed refrigeration system to remove heat from the first refrigerant;
delivering water to a mold body from a water distribution manifold;
detecting that the demand for ice is satisfied; and
deactivating the pump.

12. The method of claim 11 , wherein the heat exchanger heater usage data is the length of time that the heater has run.

13. The method of claim 11 , wherein the heat exchanger heater usage data is the temperature of the first refrigerant.

14. The method of claim 11 , wherein the step of circulating a second refrigerant in a second sealed refrigeration system further includes adjusting the speed of a variable speed compressor.

15. The method of claim 11 , wherein the pump is a variable speed pump and the step of activating the pump further includes adjusting the speed of the pump to alter the circulation rate of the first refrigerant.

16. The method of claim 11 further comprising the step of activating an ice formation heater attached to the mold body to reduce the rate of ice formation.

17. The method of claim 11 further comprising the step of activating a water heater in fluid communication with the water distribution manifold to provide warm water to the mold body.

18. The method of claim 11 further comprising the step of adjusting a fluid control valve upstream from the water distribution manifold for controlling the flow of water to the water distribution manifold.

19. The method of claim 14 , wherein the step of circulating a second refrigerant in a second sealed refrigeration system further includes circulating the second refrigerant through a heat exchanger.

20. The method of claim 19 , wherein the step of circulating the first refrigerant through a first sealed refrigerant system further includes circulating the first refrigerant through the heat exchanger.

Assignees

• Haier Us Appliance Solutions Inc

Inventors

• Ryu Choon Jae
• Kyriacou Stephanos
• Foster Ronald Gary

Classifications

• F25C2600/04

  Control means · CPC title

• F25C5/08

  by heating bodies in contact with the ice · CPC title

• F25D11/025

  using primary and secondary refrigeration systems · CPC title

• F25C1/04

  by using stationary moulds · CPC title

• F25C1/24

  for refrigerators, e.g. freezing trays · CPC title