Device and method for generating steam comprising a container for collecting scale flakes

Patent metadata

Field	Value
Publication number	US-10451368-B2
Application number	US-201615763858-A
Country	US
Kind code	B2
Filing date	Nov 4, 2016
Priority date	Nov 17, 2015
Publication date	Oct 22, 2019
Grant date	Oct 22, 2019

Abstract

The invention relates to a device (1) for generating steam. The device (1) comprises a first plate (2) being inclined at a positive first angle (A0) compared to the horizontal direction (H) to define a first upper end (2a) and a first lower end (2b), a heating element (3) to heat the first plate (2) to a predetermined temperature being at least above water evaporation temperature, a water inlet arrangement (4) for dispensing water onto the first plate (2), a second plate (5) being inclined at a negative second angle (B0) compared to the horizontal direction (H) to define a second upper end (5a) and a second lower end (5b), the second upper end (5a) adjoining the first lower end (2b), and a container (6) extending at least below said first lower end (2b), said container (6) being arranged for collecting scale flakes falling from the first plate (2). This solution allows creating a larger volume for the collection of scale, thus increasing the operating life of the device (1).

First claim

The invention claimed is:

1. A device for generating steam, comprising:
a first plate inclined at a positive first angle (A 0 ) of less than 90 degrees above a horizontal reference (H), the first plate comprising a first upper end and a first lower end;
a second plate inclined at a negative second angle (B 0 ) of less than 90 degrees below the horizontal reference (H), the second plate comprising a second upper end and a second lower end, the second upper end and adjoining the first lower end to form a protrusion, wherein the horizontal reference (H) passes through the protrusion;
a heating element to heat the first plate via conduction to a predetermined temperature for generating steam;
a water inlet for dispensing water onto the first plate; and
a container positioned below the protrusion and extending into a recess formed below the inclined second plate between the second upper end and the second lower end, the container being arranged for collecting scale flakes falling from the protrusion.

2. The device of claim 1 , wherein the container comprises a mesh for retaining the scale flakes while allowing water to filter through.

3. The device of claim 1 , wherein the container comprises one of a perforated pate or a perforated sheet for retaining the scale flakes while allowing water to filter through.

4. The device of claim 1 , further comprising an additional heating element for generating steam from water collected by the container.

5. The device of claim 1 , wherein the second plate is configured to conduct heat to the container from at least one of the heating element and the first plate.

6. The device of claim 1 , wherein the container is removable, and wherein the device further comprises an attachment mechanism configured to reversibly secure the container in place.

7. The device of claim 6 , wherein the attachment mechanism is further configured to seal the container with an outer surface of the device when the container is in place.

8. The device of claim 1 , wherein the first plate has at least one channel extending between the first upper end and the first lower end.

9. The device of claim 1 , wherein the water inlet comprises a water distributor configured to distribute water across a substantial width of the first plate.

10. A steaming appliance comprising:
the device for generating steam according to claim 1 ; and
a water pump configured to delivery water to the water inlet.

11. The steaming appliance according to claim 10 , wherein the container comprises an exterior surface with a handling mechanism for removing the container from the steaming appliance.

12. The steaming appliance of claim 11 , further comprising a housing, wherein the exterior surface of the container is flush with an outer surface of the housing.

13. A method of collecting scale flakes in a device for generating steam, the method comprising:
heating a first plate with a heating element via conduction, the first plate inclined at a positive first angle (A 0 ) of less than 90 degrees above a horizontal reference (H), and the first plate defining a first upper end and a first lower end, wherein the first lower end is adjoins a second upper end of a second plate that is inclined at a negative second angle (B 0 ) of less than 90 degrees below the horizontal reference (H);
dispensing water on the heated first plate; and
collecting scale flakes falling from the first plate in a container positioned below the first lower end and extending from a location below the second upper end into a recess below the inclined second plate,
wherein the horizontal reference (H) passes through a location at which the first lower end adjoins the second upper end.

14. The device of claim 1 , wherein a magnitude of the negative second angle is less than a magnitude of the positive first angle.

Assignees

• Koninklijke Philips Nv

Inventors

• Valiyambath Krishnan Mohankumar
• Pang Yen Leng

Classifications

• F22B27/165

  with film flow of water on heated surfaces · CPC title

• F22B1/287 Primary

  with water in sprays or in films · CPC title

• F22B27/14

  built-up from heat-exchange elements arranged within a confined chamber having heat-retaining walls {(F22B1/288 takes precedence)} · CPC title

• F22B37/60

  specially adapted for steam boilers of instantaneous or flash type · CPC title

• B01D35/02

  Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks, (B01D35/05 takes precedence; {water pipe system filters E03B3/18, E03B7/07; dirt catchers in sewers E03F; filters or strainers for pipe-lines in general B08B, E03F; object or dirt catching devices in sinks or the like E03C1/26; suction strainers or filters for pumps F04B53/005, F04D29/70}) · CPC title