Washing pump and dishwasher including the same

Patent metadata

Field	Value
Publication number	US-10820779-B2
Application number	US-201816118831-A
Country	US
Kind code	B2
Filing date	Aug 31, 2018
Priority date	Aug 31, 2017
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

Disclosed is a washing pump for spraying washing water or steam to wash dishes or cooking appliances, and a dishwasher including the same. The washing pump according to the present invention includes: a housing; a partition wall which is vertically divides an inner space of the housing; an impeller which is rotatably disposed over the partition wall in the housing to cause washing water to flow; a heater which is disposed under the partition wall to heat the washing water in the housing so as to generate steam; and a steam discharge pipe which is disposed over the partition wall to discharge the steam, generated by the heater, to an outside of the housing. Accordingly, steam may be generated by the heater and discharged.

First claim

What is claimed is:

1. A washing pump comprising:
a housing configured to receive washing water;
a partition wall that divides an inner space of the housing;
an impeller that is located vertically above the partition wall, that is configured to rotate relative to the housing, and that is configured to cause flow of washing water;
a heater that is located vertically below the partition wall, that is configured to heat washing water in the housing, and that is configured to generate steam from washing water in the housing;
a washing water inflow pipe configured to receive washing water into the housing based on rotation of the impeller;
a washing water outflow pipe configured to discharge washing water from the housing based on rotation of the impeller; and
a steam discharge pipe that is disposed on a circumferential surface of the washing water outflow pipe, that is located vertically above the partition wall, and that is configured to discharge steam generated by the heater to an outside of the housing,
wherein the partition wall is located between the washing water inflow pipe and the washing water outflow pipe.

2. The washing pump of claim 1 , wherein the heater is configured to couple to a bottom of the housing, and
wherein a part of the heater is located inside of the housing.

3. The washing pump of claim 1 , wherein the heater comprises:
a heater cover that defines a bottom surface of the housing; and
a heating element configured to contact a lower side of the heater cover to heat the heater cover.

4. The washing pump of claim 3 , wherein a part of the heater cover protrudes upward from the bottom surface of the housing to define a space configured to receive a part of the heating element.

5. The washing pump of claim 3 , wherein the heater cover is configured to be positioned between washing water in the housing and the heating element.

6. The washing pump of claim 3 , wherein the heater cover is configured to, based on being heated by the heating element, heat washing water in the housing.

7. The washing pump of claim 1 , wherein the steam discharge pipe extends from the washing water outflow pipe.

8. The washing pump of claim 1 , wherein the washing water outflow pipe is configured to discharge washing water in a washing water outflow direction, and
wherein the steam discharge pipe is configured to discharge steam in a steam discharge direction that is perpendicular to the washing water outflow direction.

9. The washing pump of claim 1 , wherein the steam discharge pipe is located vertically above the washing water inflow pipe.

10. The washing pump of claim 1 , wherein the heater is located vertically below the washing water inflow pipe.

11. The washing pump of claim 1 , wherein the steam discharge pipe extends from the circumferential surface of the washing water outflow pipe in a radial direction of the washing water outflow pipe.

Assignees

• Lg Electronics Inc

Inventors

• Yang Daebong
• Kim Minseong
• Park Hyungman

Classifications

• A47L15/428

  Rotary nozzles · CPC title

• A47L2501/14

  Steam generators · CPC title

• A47L15/4214

  Water supply, recirculation or discharge arrangements; Devices therefor · CPC title

• A47L2501/06

  Water heaters · CPC title

• A47L15/4234 Primary

  Steam generating arrangements · CPC title