Steam generator with pre-heat chamber and filter

Patent metadata

Field	Value
Publication number	US-11618992-B2
Application number	US-201816615639-A
Country	US
Kind code	B2
Filing date	Jun 8, 2018
Priority date	Jun 16, 2017
Publication date	Apr 4, 2023
Grant date	Apr 4, 2023

Abstract

A steam generator includes a pre-heat chamber configured to heat incoming water to a temperature less than the boiling point of water, where the pre-heat chamber is configured to heat the water such that if the water contains a calcium compound, the calcium compound is caused to take a particulate form. The steam generator also includes a filter assembly in fluid communication with the pre-heat chamber, the filter assembly including a removable particulate filter element, where the filter element is reusable and cleanable. The steam generator also includes a water pump in fluid communication with the filter assembly, and operative to cause water flow through the steam generator and a boiler in fluid communication with the water pump, where the water pump is configured to cause water to flow to the boiler, and where the boiler is configured to boil water such that steam is produced.

First claim

The invention claimed is:

1. A steam generator, comprising:
a pre-heat chamber configured to heat incoming water to a temperature less than the boiling point of water, wherein the pre-heat chamber is operatively connected with a pre-heat temperature controller to heat the water to a desired pre-heat temperature below the boiling point of water so that if the water contains a calcium compound, the calcium compound will be caused to take a particulate form;
a filter assembly in fluid communication with the pre-heat chamber that is operatively positioned downstream of the pre-heat chamber for receiving water from the pre-heat chamber, the filter assembly including at least a particulate filter element that is configured to remove calcium compounds in particulate form from the water;
a water pump in fluid communication with the filter assembly, and operative to cause water flow through the steam generator; and
a boiler in fluid communication with the water pump, wherein the water pump is configured to cause water to flow from the filter assembly to the boiler, and wherein the boiler operatively positioned downstream of the pre-heat chamber and operatively connected to a boiler temperature controller to boil water such that steam is produced.

2. The steam generator of claim 1 , wherein the boiler is configured to maintain at least some steam when the steam generator is not in active use.

3. The steam generator of claim 1 , further comprising a steam delivery device, wherein the steam delivery device includes holes for applying steam generated by the boiler to a garment.

4. The steam generator of claim 1 , wherein the pre-heat chamber includes a heating element located on a surface of the pre-heat chamber.

5. The steam generator of claim 1 , wherein the pre-heat chamber includes a heating element located within a cavity of the pre-heat chamber.

6. The steam generator of claim 1 , wherein the filter element has a stainless steel mesh with a pore size of 100 microns or less.

7. The steam generator of claim 1 , further comprising a water reservoir fluidly connected to the pre-heat chamber of the steam generator.

8. The steam generator of claim 1 , wherein the pre-heat chamber and the boiler are controllable by the pre-heat and boiler temperature controllers to be operable at the same time.

9. A steam station, comprising:
a steam delivery device fluidly connected to a steam generator;
a water reservoir fluidly connected to the steam generator;
a steam generation base comprising the steam generator, wherein the steam generator comprises:
a pre-heat chamber configured to heat incoming water to a temperature less than the boiling point of water, wherein the pre-heat chamber is operatively connected with a pre-heat temperature controller to heat the water to a desired preheat temperature below the boiling point of water so that if the water contains a calcium compound, the calcium compound will be caused to take a particulate form;
a filter assembly in fluid communication with the pre-heat chamber that is operatively positioned downstream of the pre-heat chamber for receiving water from the preheat chamber, the filter assembly including a particulate filter element that is configured to remove calcium compounds in particulate form from the water;
a water pump in fluid communication with the filter assembly, and operative to cause water flow through the steam generator; and
a boiler operatively positioned downstream of the pre-heat chamber and in fluid communication with the water pump, wherein the water pump is configured to cause water to flow from the filter assembly to the boiler, and wherein the boiler is operatively connected to a boiler temperature control circuit to boil water such that steam is produced.

10. The steam station of claim 9 , wherein the boiler is configured to maintain at least some steam when the steam generator is not in active use.

11. The steam station of claim 9 , wherein the pre-heat chamber and the boiler are controllable by the pre-heat and boiler temperature controllers to be operable at the same time.

12. The steam station of claim 9 , wherein the pre-heat chamber includes a heating element located on a surface of the pre-heat chamber.

13. The steam station of claim 9 , wherein the pre-heat chamber includes a heating element located within a cavity of the pre-heat chamber.

14. A method of controlling a steam generator, comprising:
heating water to a temperature less than the boiling point of water, within a pre-heat chamber in operative communication with a first temperature control circuit, the temperature control circuit setting a pre-heat temperature for causing a calcium compound dissolved within the water to take a particulate form;
transferring water including particulate calcium compound from the pre-heat chamber through a filter assembly that is operatively positioned downstream of the pre-heat chamber and filtering particulate calcium compound from the water;
transferring filtered water to a boiler provided downstream of the pre-heat chamber in operative communication with a second temperature control circuit; and
boiling the water using the boiler and thereby generating steam.

15. The method of claim 14 , further comprising:
filtering particulate matter out of the water using a removable particulate filter and using a water pump for pumping the water to flow through the steam generator.

16. The method of claim 14 , wherein a controller is configured to control the first temperature control circuit in communication with the pre-heat chamber, the water pump, and the second control circuit in communication with the boiler such that the water is selectively pumped using the water pump, selectively heated at the pre-heat chamber, and selectively boiled at the boiler such that steam is produced.

17. The method of claim 16 , wherein an indication of a desired output of steam to be produced is received from a user input received at the controller.

18. The method of claim 16 , wherein the controller is further configured to control the pre-heat chamber, the water pump, and the boiler based on at least a receiving a signal from the filter assembly.

19. The method of claim 14 , wherein the controller is further configured for heating the pre-heat chamber and the boiler at the same time as an inline continuous steam generating process.

Assignees

• Spectrum Brands Inc

Inventors

• Nernberger Kroy Everett
• Sampath Boopalan
• Strong Daniel Richard
• Mayer Adam Joseph

Classifications

• F22B1/284

  with water in reservoirs · CPC title

• B01D35/12

  Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration · CPC title

• D06F39/007

  Arrangements of water softeners · CPC title

• B01D39/10

  Filter screens essentially made of metal · CPC title

• F22D11/006

  Arrangements of feedwater cleaning with a boiler · CPC title